Phlœophagosoma, Wollaston. Man. N.Z. Coleopt., p. 529.
Body fusiform or elongate subovate-cylindricum, moderately shining, glabrous.
Rostrum as long or nearly as long as thorax, moderately stout, parallel, rarely slightly dilated medially or basally. Eyes moderate, lateral. Thorax usually elongate, ovate-triangular, slightly constricted in front. Scutellum rather small, but distinct. Elytra elongate, the base wider than that of the thorax, subparallel, gradually narrowed posteriorly. Scape moderately elongate, stout, medially inserted, reaching beyond the back of the eye; 2nd joint of the funiculus sometimes longer than the 3rd. Club large, indistinctly annulate. Legs stout, inner angle of the tibiæ produced, with a spinule there. Tarsi with their 3rd joint slightly dilated, rarely subbilobed, claws small.
Metasternum rather long, sharply sulcate medially behind. Anterior coxæ widely separated.
Allied to Rhyncolus, but differing therefrom in having the rostrum more slender and elongate, more medially inserted and thinner antennæ, with a more abrupt and larger club, and less prominent eyes. From Phlœophagus
it differs in having a larger scutellum, more elongated prothorax and metasternum, and the 2nd joint of the funiculus and tarsi more abbreviated. The species are usually larger, less ovate and convex, their rostrum proportionally more lengthened, and the anterior 4 coxæ wider apart.
The species occur in Japan, Malaya, India, New Zealand, &c.
Phlœophagosoma corvinum, Wollaston. 941. Man. N.Z. Coleopt., p. 530.
Parallel-fusiform, subcylindrical, rather convex, nitid, black.
Rostrum rather long, parallel, sparingly and minutely punctate. Eyes small, moderately prominent. Thorax triangular-ovate, very slightly constricted in front, moderately finely but not closely punctured, more openly along the middle. Elytra subcylindric, narrowed posteriorly, quite as broad as the broadest part of the thorax, behind the middle, evidently punctate-striate, subcrenate-punctate; interstices moderately convex, subrugulose, sparingly and minutely punctate, the sculpture much less distinct on the posterior declivity. Underside lightly and distantly punctate. Antennæ rather slender, rufo-piceous, club subobscure.
Length, 2 ⅓ lines; breadth, ⅝ line.
P. thoracicum, Wollaston. 943. Man. N.Z. Coleopt., p. 531.
Nitid, nigro-piceous, elytra piceous.
Rostrum subarcuate, moderately densely punctate. Thorax moderately coarsely and closely punctate. Elytra truncate at base.
Like 941; thorax larger, a trifle more distantly punctured, elytra more deeply punctate-striate and less biarcuate at the base.
Length, 2—2 ¼ lines; breadth, ⅝ line.
P. dilutum, Wollaston. 944. Man. N.Z. Coleopt., p. 531.
Piceous, elytra piceo-castaneous.
Like 941; rather smaller and narrower. Its rostrum, in proportion to its size, a trifle broader, and obsoletely impressed transversely between the eyes, causing it to appear obscurely subdivided from the forehead; and its scape is more elongated, and extends beyond the apex of the rostrum.
Length, 1 ¾—2 ¼ lines; breadth, ½ line.
Tairua and Parua.
P. pedatum, Wollaston. 945. Man. N.Z. Coleopt., p. 532.
Like the preceding species; just appreciably less fusiform or more parallel, the vertex with a more distinctly impressed linear fovea, and the 3rd tarsal joint very much wider and deeply bilobed.
Length, 2 ½ lines; breadth, ⅝ line.
Auckland and Mokohinau Island.
P. rugipenne, Broun. 1310. Man. N.Z. Coleopt., p. 738.
Nude, shining, piceo-niger, legs and antennæ rufo-piceous, anterior tibiæ along the inside distinctly clothed with fine brassy setæ.
Rostrum parallel, moderately arched, finely but not closely punctured almost as far as the thoracic margin, rather more finely near the apex, the fovea behind the eyes minute. Thorax longer than broad, widest behind the middle; the sides, however, only very gently rounded; frontal constriction distinct; with a smooth central line, distinctly, rather finely, but
not at all closely punctured. Elytra evidently striate and crenate-punctate, interstices rugose and, like the suture, with serial punctures; the base distinctly biarcuate. Tarsi simple, their terminal joint rather long and slender.
The antennæ are inserted before the middle. This will lead to its recognition.
Length, 2 ¾ lines; breadth, ⅝ line.
Mount Manaia, Whangarei.
P. abdominale, Broun. 1311. Man. N.Z. Coleopt., p. 738.
Shining, black, glabrous, legs and antennæ piceo-rufous.
Rostrum slightly dilated behind the middle, distinctly arched or convex there, but not impressed behind, with two minute rufescent projections, and fine pale setæ at the apex; finely but not closely punctured; occiput finely and distantly punctured, the interocular fovea minute. Eyes rather large, subtruncate behind, not prominent. Antennæ inserted behind the middle. Thorax slightly longer than broad, a good deal rounded behind the middle and narrowed but not deeply constricted in front, its sculpture similar to that of 1310. Scutellum transverse. Elytra subtruncate at the base, which is slightly wider than that of the thorax; they are not cylindric, being gradually but quite perceptibly attenuated posteriorly; punctate-striate, the intermediate striæ indistinct, interstices and suture with fine serial punctures but not rugose. Tarsi simple.
The antennal insertion, broad scutellum, larger, depressed, and differently formed eyes are features which will enable it to be identified.
Obs.—Whilst the various members of this genus were under review I noticed that the extreme apex, or clypeus, was more or less rufescent, and angularly emarginate in the middle, as is certainly the case in this species.
Length, 2 ½ lines; breadth, ⅝ line.
Mount Manaia. Unique.
Eutornus, Wollaston. Man. N.Z. Coleopt., p. 534.
Allied to the Malayan Conarthrus, the body more fusiform and lightly sculptured, more rufescent, &c.
♂. Rostrum broad, hardly as long as the head nor as broad as it is, subparallel. Scrobes deep, oblique, passing abruptly to the lower surface in front of the eyes. Head globose, quite as long as broad, subparallel, the occiput not perceptibly marked off from the head. Eyes widely separated from each other and distant from the thorax, quite prominent, rotundate, moderately large. Scape medially inserted, reaching backwards to beyond the eye, stout, gradually incrassate, and distinctly flexuous. Funiculus closely articulated, the basal joint largest, joints 2—7 almost equally transverse. Club large, ovate, or oblong-oval. Thorax subcylindrical, its sides a little rounded, moderately narrowed and constricted in front. Scutellum very small. Elytra broader than thorax, subparallel, gradually narrowed posteriorly. Legs of moderate length and thickness, tibial hooks well developed. Tarsi finely setose underneath, 2nd joint of the anterior oblong or quadrate, 3rd not expanded, excavate in front, but not lobate, terminal rather slender and hardly the length of the basal three combined.
Underside shining, nigrescent, moderately finely and distantly punctate. Prosternum truncate in front, the coxæ only moderately separated; the
intermediate and posterior coxæ almost equally and widely separated. Metasternum as long as the basal 2 ventral segments, medially sulcate; 2nd segment shorter and more finely sculptured than the 1st; both unimpressed.
The above description has been drawn up from specimens of Eutornus dubius, and will, I hope, prove more satisfactory to New Zealand students than the original one, which necessitates a careful comparison with Japanese and Malayan genera, which he may never see. The species occur in Ceylon and the Malay Archipelago.
The short broad head and rostrum, and strongly flexuous scape, will enable this genus to be separated from Phlœophagosoma.
Eutornus dubius, Wollaston. 948. Man. N.Z. Coleopt., p. 534.
Elongate, fusiform, rather nitid, piceo-niger, elytra rufo-piceous.
Head broader than the rostrum, with a linear interocular impression, moderately punctured, more distantly behind the eyes, nearly smooth behind. Thorax not twice as long as broad, rather wider near the base than it is elsewhere, but only slightly rounded at the sides, gradually narrowed anteriorly; moderately coarsely but not closely punctured. Elytra truncate at base, striate-punctate, interstices with fine serial punctures and in some aspects appearing rugose. Antennæ rufo-piceous.
♂. Length, 1 ⅔ lines; breadth, nearly ½ line.
Auckland, Parua, &c.
E. vicinus, Broun. 949. Man. N.Z. Coleopt., p. 535.
Shining, piceous, elytra castaneous, with the suture and sides piceous, antennæ and tarsi dark red, with some minute grey setæ visible on the posterior declivity.
Differs from E. dubius in having a less flexuous scape, the rostrum about a third longer and more finely punctate, the head more closely and finely and without any interocular impression; the occiput smoother and slightly incurved between the thorax and the eyes, which are hardly at all prominent; the thorax more closely, scutellum more distinct; elytra striate at the base and alongside the suture, their interstices not rugose, and with their apical margins a little dilated or thickened. Antennæ inserted almost behind the middle.
♀. Length, 1 ½ lines; breadth, ⅜ line.
Parua. One only.
E. breviceps, Broun. 950. Man. N.Z. Coleopt., p. 535.
Rostrum finely and somewhat rugosely punctate, with an angular impression near the apex. Eyes small and subdepressed. Funiculus short, so that the club appears to equal it in length. Thorax cylindrical, nearly as broad in front as at the base, slightly constricted in front, much more closely and finely (and somewhat rugosely) punctured than that of E. dubius; the intervals between the punctures densely and minutely sculptured, as is also the case on the rostrum. Body rufo-castaneous.
♂. Length, 1 ¼ lines; breadth, ⅜ line.
The type, unfortunately, was dislodged from the mica slab on which it was mounted, and lost.
E. amplus, Broun. 951. Man. N.Z. Coleopt., p. 535.
Rufo-piceous, moderately nitid. Larger than typical examples of E. dubius, the head and rostrum more finely punctured, the former appreciably longer and a little constricted midway between the eyes and thorax, antennæ more elongate, the linear interocular impression prolonged to the middle of the rostrum, thorax more deeply constricted, the base of the elytra biarcuate, the sutural striæ distinct.
♂. Length, 2 ⅛ lines; breadth, nearly ½ line.
E. littoralis, Broun. 952. Man. N.Z. Coleopt., p. 536. (Plate XVI, fig. 12.)
Piceo-rufous, elytra sometimes piceous, the legs and antennæ red.
Of peculiarly elongate cylindric outline, with small inconspicuous eyes. The rostrum, head, and thorax very finely, almost minutely, punctate; the thorax nearly cylindrical, very gradually narrowed anteriorly, and hardly at all constricted; elytra quite cylindric and rather finely striate-punctate, interstices with minute distant punctures.
Length, 1 ½ lines; breadth, nearly ⅜ line.
Tairua, East Coast. Under logs, on the seaside.
E. cylindricus, Broun. 2206. Man. N.Z. Coleopt., p. 1252.
Piceo-rufous or castaneous, generally of the latter colour, underside included.
Closely resembling E. littoralis, the rostrum more distinctly marked off, narrower than the head; eyes transversely oval and rather more prominent; there is an interocular fovea; elytra slightly narrowed near the posterior femora so as to appear a little dilated behind, more striate, the serial punctures on the suture and interstices closer and more distinct; the body itself rather less slender.
Length, 1 ¾ lines; breadth, ⅜ line.
Otago. On the sea-beach.
E. parvulus, Broun. 2207. Man. N.Z. Coleopt., p. 1253.
Shining, testaceous, legs and antennæ rufescent. Head and rostrum nearly smooth, the few minute punctures distant from each other, the eyes slightly more prominent, the thorax not constricted in front and exactly the same width as the smooth occiput, elytra finely striate-punctate, with but few interstitial punctures.
Length, 1 ¼ lines; breadth, ¼ line.
Taranaki, West Coast. One.
Obs.—The transference of E. littoralis, cylindricus, and parvulus to a distinct genus might be considered justifiable, the eyes being different from those of Eutornus.
Stilbocara, Broun. Ann. Mag. Nat. Hist., November, 1893.
Subdepressed, fusiform, glabrous, glossy.
Rostrum nearly as long as the thorax, very obviously marked off from the strongly globose occiput, arched, subparallel, or slightly and very gradually narrowed behind, moderately stout but not broad. Scape stout, very short, inserted just before, in the female at, the middle; it does not reach backwards as far as the eye. Funiculus closely articulated, joints 2—7
gradually become shorter and broader. Club elongate, oblong-oval. Eyes prominent, placed at the sides of the rostrum, subtruncate behind, and extending considerably downwards. Head much swollen behind, and extending downwards below the level of the prosternum; above it is curvedly contracted towards the eyes. Thorax longer than broad, its sides moderately rounded, a good deal narrowed and constricted in front. Scutellum distinct. Elytra biarcuate at the base and wider than that of the thorax, gradually narrowed backwards.
Legs of moderate length, tibiæ strongly uncinate, their inner angle acute. Tarsi narrow, basal joint nearly as long as the terminal, 2nd longer than broad, 3rd narrow, excavate but not lobed.
Underside nearly plane. Metasternum elongate, rather longer than the basal 2 abdominal segments taken together, indistinctly sulcate, basal segment very broadly impressed but not concave. All the coxæ widely separated. Rostrum, underneath, with a distinct median carina.
Stilbocara in its general appearance does not resemble any of our genera of the Cossonides, but looks like Toura (904), one of the Pentarthrides. The body of Stilbocara though subdepressed is quite unlike Arecophaga. The scape is very short and thick, the tibial hooks strongly developed, and the polished occiput is remarkably prominent in every aspect. The rostrum though shorter is similar to that of Toura longirostre.
Stilbocara nitida, Broun. Ann. Mag. Nat. Hist., November, 1893.
Glossy, sparingly clothed with very minute grey setæ, but appearing quite glabrous; castaneo-rufous, rostrum and thorax rufous, tarsi paler.
Rostrum very gradually and slightly narrowed towards the base, finely and rather distantly punctured. Thorax unimpressed, distinctly but not closely punctured, much more finely in front, the constriction forming a slight depression across the front. Elytra evidently punctate-striate, the suture and interstices with fine serial punctures, the 3rd deeply sunk behind. Club large, opaque, but not dark, and densely pubescent. The external hooks of the 4 hind tibiæ are prolonged to the apex of the 2nd tarsal joint.
♀. Length, 1 ⅝ lines; breadth, ⅜ line.
Hunua Range, Clevedon. One.
S. constricticollis, Broun. 942. Man. N.Z. Coleopt., p. 530. (Plate XVI, fig. 5.)
Shining, almost piceo-rufous, elytra lighter.
Thorax rather shorter than in S. nitida, more coarsely and closely punctured. Elytra with deeper and broader striæ, near the suture and base particularly; interstices and suture seriate punctate. Funiculus more elongate, the club rather shorter. Scape inserted before the middle.
Female.—Pale rufo - castaneous. Thorax more gradually narrowed anteriorly, antennæ medially inserted.
Underside shining, nigro-piceous, rather coarsely but not closely punctured, 2nd segment with fewer and finer punctures, the 5th smooth in the middle.
♂. Length, 1 ½ lines; breadth, ⅜ line.
S. serena, Broun. 2205. Man. N.Z. Coleopt., p. 1251.
Shining, dark rufous, elytra and legs castaneo-rufous, the former paler near the shoulders.
Like S. nitida in form, the legs not as stout. The tibial hooks reach apex of the basal tarsal joint, the minute 4th joint of the tarsi more distinctly visible. The scape more abruptly incrassate. Thorax rather shorter. Club nearly as long as the funiculus. Occiput less swollen. Elytral striae suborenate-punctate.
♂. Length, 1 ½ lines; breadth, ⅜ line.
Arecophaga, Broun. Man. N.Z. Coleopt., p. 533.
Body subdepressed, elongate-subovate, moderately nitid, sparingly clothed with slender but distinct hairs.
Rostrum of about the same length as the thorax, arched, moderately slender, cylindrical, indistinctly and gently narrowed medially; between the apex and the middle with numerous outstanding setae. Scrobes deep, beginning between the middle and extremity, and extending underneath to the eyes. Head globose, immersed nearly to the eyes, rounded in front, distinctly marked off from the rostrum. Eyes depressed, large, their greatest bulk below. Thorax about as broad as it is long, conical, abruptly constricted in front, the apex appearing elevated, and emarginated in the middle, its base slightly bisinuate. Scutellum distinct. Elytra slightly sinuate at the base, which is a little wider than that of the thorax, gradually but considerably curvedly narrowed posteriorly. Scape elongate and slender, flexuous, moderately subclavate at the extremity, inserted between the apex and the middle and hardly attaining the eye. Funiculus laxly articulated, elongate and slender, basal 2 joints nearly equally elongate, 3–7 rather small, the 7th largest. Club elongate - oval, quadriarticulate. Femora medially dilated below, and notched near the extremity. Tibiae with rather small hooks, somewhat dilated medially on the inside. Tarsi distinctly pseudo-tetramerous, slender, basal joint elongate, 3rd moderately expanded, with a semicircular excavation so as to seem lobate.
Underside flat. Anterior coxae less approximated than those of Phlaophagosoma, the suture between them fine but distinct. Mesosternal suture subtruncate. Metasternum hardly longer than the basal 2 segments, sulcate behind the middle; 2nd ventral segment shorter than the 1st, its frontal suture medially curvate. Punctuation distinct, and rather close, except in front of the mesosternum.
This genus presents a combination of peculiar characters. The sub-depressed rather broad oviform body, slender arcuate setigerous rostrum, and retracted head will suffice for immediate identification. The type lives on Rhopalostylis (Areca) sapida.
Arecophaga varia, Broun. 947. Man. N.Z. Coleopt., p. 534. (Plate XVI, fig. 6.)
Variable, ranging from piceous to rufo-castaneous, the antennae and tarsi rufescent.
Rostrum asperate, indistinctly medially carinate, and with coarse punctures and shallow grooves behind the point of antennal insertion, more moderately punctured in front. Eyes large, extending to below the rostrum, occupying nearly the whole side and front of the head, not prominent. Thorax rather closely, moderately coarsely, on some parts confluently punctured, quite finely and very closely in front, sometimes smooth on a central lineal space along the middle. Elytra with closely punctured striae, interstices more or less rugose, the sutural rather closely seriate punctate.
Legs somewhat asperate and finely setose. The rostrum, underneath, tricarinate in front, smooth behind.
Female.—Rostrum much arched above, longer than the thorax, more slender than that of the male, a little asperate and coarsely rugosely punctured at the base, the punctuation more distinct, finer, and subseriate towards the front, and bearing some short setae along its sides behind the antennae, which are inserted just before the middle.
Var. ♂.—The coarse lateral setae of the rostrum near the front obsolete or absent.
♂. Length, 2 ¼ lines; breadth, ⅝ line.
Parua and Hunua Range. Both sexes.
Pogonorhinus, Broun. Man. N.Z. Coleopt., p. 532.
Depressed, moderately broad, subfusiform, opaque, bearing semi-erect slender yellow setae.
Rostrum about as long as the thorax, slightly arched, cylindrical, not quite half the breadth of the head, and marked off at the base by a transverse linear impression; at each side, from the extremity to behind the middle, it is fringed rather thickly with long conspicuous bright - yellow setae; this fringe is prolonged underneath and becomes finer, and approximated to its fellow, near the eye. Scrobes profound, beginning near the apex and extending to the eyes, linear. Head rounded in front, immersed to the eyes, globose underneath. Eyes not prominent, large, their greatest bulk below, and so situated that vision must be directed nearly straight forwards. Scape inserted between the apex and the middle, moderately stout, nearly straight, gradually incrassate, not quite attaining the eye. Funiculus closely articulated, 2nd joint nearly as long as the 1st, both nearly twice as long as they are broad, 3–7 gradually thickened, transverse, 7th largest. Club elongate, oviform, subacuminate, but little broader at its base than the 7th joint, almost quadriarticulate. Thorax as broad as it is long, sub-conical, abruptly contracted in front, base subtruncate, the sides well rounded. Scutellum distinct. Elytra gradually narrowed backwards, the base slightly bisinuate and rather wider than that of the thorax. Femora moderately elongate, strongly arched above, widely notched near the extremity, angulate and distinctly dentate medially below; those of the female nearly similar. Tibiae moderately uncinate, the 2 hind pairs dilated inwardly below the middle, the front pair prominent and finely ciliate at the middle, but emarginated between the middle and extremity in both sexes. Tarsi relatively slender, basal joint shorter than the terminal, the 3rd slightly dilated, deeply excavate above and appearing lobate, but underneath apparently entire.
Female.—Rostrum arched, more slender, not ciliate. Scape inserted before the middle.
Underside nearly plane, minutely setose, moderately coarsely punctate. Prosternum deeply incurved medially in front, the coxae slightly separated, more approximated than in Phlaeophagosoma, and with much larger cavities, and more nearly contiguous than those of Arecophaga. Mesosternal suture truncate, and very distinct between the coxae.
This genus most nearly resembles Arecophaga, but is differentiated by the more approximated anterior coxae, shorter and rather stouter rostrum, dentate femora, &c. Out of 122 genera enumerated in Wollaston's “Genera of the Cossonidae” four only approach this one in structure. Odontomesites,
from the Canary Islands, comes nearest, but even in it the femoral tooth does not exist in the female; the male, moreover, has only a short rostral fringe.
Pogonorhinus opacus, Broun. 946. Man. N.Z. Coleopt., p. 533. (Plate XVI, fig. 7.)
Fusco-rufous, sometimes more piceous in the male, legs and antennae always rufescent, the male rostrum piceous, that of the female shining and reddish.
Rostrum coarsely punctured, very closely at the base, indefinitely tricarinate along the middle, longitudinally but finely rugose, and with slender grey setae, in front. Thorax broadly but not at all deeply impressed on the middle, very closely and distinctly, on some parts rugosely, punctured, much more finely in front, the smooth central portion of the apex of a somewhat metallic coppery hue. Elytra plane, closely punctate-striate, the punctures oblong or quadrate; interstices rugose and seemingly punctate or finely asperate, their sculpture rather ill defined, however, owing partly to the numerous yellow setae.
♂. Length, 2 ¼ lines; breadth, ⅝ line.
Parua and Howick. Rare.
Pogonorhinus substituted for Lasiorhinus in 1903.
Exomesites, Broun. Man. N.Z. Coleopt., p. 971.
Body robust, nearly plane above, elongate, glossy, very coarsely and rugosely sculptured, sparingly and finely pubescent.
Rostrum nearly as long as the thorax, stout, widely incurved between the point of antennal insertion and the base; the portion in front of the antennae, more than a third of the whole length, much dilated and subpterygiate. Mandibles prominent. Scrobes quite open above near the apex, deep and very oblique towards the lower surface. Scape elongate, stout, and gradually incrassate, inserted between the middle and the apex, attaining the middle of the eye. Funiculus distinctly articulated, 2nd joint as long as the basal one, 3–7 subquadrate, narrowed towards the base, the last 2 especially. Club not annulate, broadly oval, moderately large. Occiput smooth and convex, curvedly narrowed towards the eyes but without any line of demarcation above. Eyes moderately prominent, large. Thorax oblong, its sides nearly straight, abruptly contracted in front, base strongly bisinuate. Scutellum minute or obsolete. Elytra strongly bisinuate at the base, distinctly broader than the thorax, gradually narrowed behind the middle. Legs moderately stout and elongate, tibial hooks strongly developed. Tarsi narrow, the basal joint rather shorter than the terminal one, 3rd joint narrow, concave in front but not perceptibly lobed, entire below; claws rather small.
Underside nearly plane, sparingly and minutely pubescent, very coarsely punctured, the prosternum very closely, the abdomen more distantly, 2nd segment more finely, its frontal suture obliterated in the middle. Mesosternal suture obsolete. Metasternum short, not longer than the basal ventral segment, with an indistinct impression behind. Anterior coxae only moderately separated, slightly further apart than in Pogonorhinus.
The peculiar Otiorhynchus-like rostrum, oblong thorax, obsolete scutellum, and the glossy coarsely sculptured surface distinguish the handsome species which forms the type.
Exomesites optimus, Broun. 1754. Man. N.Z. Coleopt., p. 972. (Plate XVI, fig. 11.)
Shining, piceous; the shoulders, sides, and apical portion of elytra rufocastaneous or testaceous, the disc sometimes fuscous; legs yellow or fuscotestaceous, the base of the femora and the knees fuscous or piceous.
Rostrum very coarsely and closely punctured, sometimes however there is only one interocular puncture, near the antennae there are short longitudinal rugae and striae, the apex more finely sculptured. Thorax with a more or less evident smooth median line, its punctuation very coarse but irregular, with some smooth intervals, the punctures finer and more confluent in front. Elytra somewhat uneven above, slightly impressed across the middle; their sculpture coarse and irregular, punctate-striate at the base, striate behind, interstices with fine serial punctures, 3rd, 5th, and 7th subcarinate near the base, humeral angles slightly porrect.
♂. Length, 2 ⅜ lines; breadth, ⅝ line.
Mount Egmont and Mount Te Aroha. Very rare.
Allaorus, Broun. Man. N.Z. Coleopt., p. 1494.
Body rather small, convex, almost elongate-ovate, shining, apparently glabrous.
Rostrum of nearly the same length as the thorax, arched, stout but not broad, almost parallel, usually very slightly dilated at the point of antennal insertion, distinctly marked off by a transverse frontal impression on the head; the rostrum, near its base, is more evidently arched than it is elsewhere. Scrobes deep, oblique, almost convergent underneath. Scape stout, gradually incrassate, inserted quite in front of the middle, reaching the eye. Funiculus finely setose, basal joint stout, 2–7 distinctly articulated, transverse, gradually thickened so that the 7th is nearly as broad as the base of the club, which is ovate or oblong-oval; the large basal articulation is nearly nude, the remainder densely pubescent and indistinctly annulate. Eyes minute but distinct, placed somewhat near the surface and the thoracic apex. Thorax longer than broad, oviform. Scutellum minute or altogether absent. Elytra obovate or cordiform, their base slightly wider than that of the thorax, and slightly oblique towards the suture; they are much narrowed near the extremity. Femora simple, stout, and elongate. Tibiae evidently uncinate, the anterior emarginate and ciliate inwardly below the middle, and acute at the extremity. Tarsi slender, their basal joint as long as the terminal, 3rd narrow, not at all lobate; claws minute.
Prosternum deeply incurved in front, the coxae almost contiguous. Intermediate coxae distinctly but not at all widely separated. Metasternum abbreviated, not longer than the 2nd ventral segment, broadly impressed. Basal segment large, broadly impressed, its hind suture fine and indistinct.
Five genera, three of which are European, one American, and the other belonging to the Sandwich Islands, agree more or less with Allaorus, particularly as regards the abbreviation of the metasternum. Oodemas is at once differentiated by its aeneous surface and bilobed tarsi, and Cotaster by its short basal abdominal segment. In Aparoprion the thorax is sub-globose and the tarsi lobate. Lymantes is insufficiently described, but has the thorax elongate-quadrate and the rostrum subquadrangular, two characters manifestly inapplicable to Allaorus. The other, Styphloderes, is distinguished by its subdepressed body and broadly lobed 3rd tarsal joint.
Allaorus, though belonging to the same section as these five genera, may be separated by the almost contiguous anterior coxae, abbreviated metasternum, well-developed basal ventral segment, minute eyes and claws, simple 3rd tarsal joint, minute or obsolete scutellum, oviform thorax, and convex body. In the New Zealand list it should be placed near Pselactus, which, however, has the metasternum considerably longer.
Allaorus urquharti, Broun. 2577. Man. N.Z. Coleopt., p. 1495. (Plate XVI, fig. 9.)
Shining, brownish piceo-rufous, tarsi testaceous, antennae ferruginous.
Head globose, but immersed nearly to eyes. Rostrum with some fine distant punctures. Thorax slightly wider behind the middle than it is elsewhere, rather narrower in front than at the base, without any apical stricture; very distinctly, moderately coarsely, and rather distantly punctured, more finely at the apex. Scutellum very minute. Elytra widest near the middle, much narrowed posteriorly, convex; each with 4 series of discoidal punctures, about 7 in each row, these hardly extend beyond the disc; the posterior declivity is striate. The setae are slender and indistinct.
Underside shining, rufo-pieous, metasternum and basal segment with distinct distant punctures, 2nd with very few minute ones, 5th finely and more closely punctate except at the nearly smooth base. The setae slender, scanty, and yellowish.
Length, 1 ¼ lines; breadth, ⅜ line.
Mount Pirongia. Four.
A. pedatus, Broun. 2578. Man. N.Z. Coleopt., p. 1496.
Shining, fusco-testaceous, apex of thorax and base of elytra darker; the setae scanty, very slender, and inconspicuous.
Rostrum very slightly narrower behind than in front of the antennal insertion. Thorax shorter than that of 2577, widest before the middle, more coarsely punctured. Scutellum obsolete. Elytra widest in line with the posterior femora, with coarser punctures than 2577, and more deeply punctate-striate behind. Penultimate tarsal joint more expanded and concave.
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Length, 1 1/10 lines; breadth, ⅜ line.
Mount Pirongia. Two.
A. sternalis, Broun. 2579. Man. N.Z. Coleopt., p. 1496.
Rufo-piceous tinged with fuscous, antennae and tarsi red, club infuscate; setae inconspicuous.
Thorax widest at the middle, evidently more narrowed in front than behind, coarsely and rugosely and more closely punctured than the preceding species. Scutellum absent. Prosternum truncate and ciliate in front. Metasternum nearly smooth. Basal 2 segments, combined, with 3 transverse series of punctures. Mesosternum quite smooth.
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Length, 1 1/10 lines; breadth, ⅜ line.
Mount Pirongia. One.
A. ovatus, Broun. 2580. Man. N.Z. Coleopt., p. 1497.
Shining, fuscous, slightly tinged with red, antennae rufous; setae indistinct.
Thorax shorter than that of 2577, the punctures rather closer and only slightly coarser. Scutellum absent. Punctuation of elytra very irregular and coarse, only 4 or 5 punctures in some rows on the disc.
Length, 1 line; breadth, ⅜ line
Mount Pirougia. One
A. versutus, Broun. 788. Man. N.Z. Coleopt., p. 447.
Broad, less convex than the other species, slightly shining, testaceo-fuscous, antennae dark red; setae scanty and slender, most easily seen on the rostrum and elytral apices.
Most nearly resembles 2578, the thorax not so coarsely but more closely punctured, rather short. Elytra cordiform, more rounded, with regular series of large punctures, the sutural 2 series, on each elytron, somewhat depressed at the base, so that the interstice outside appears a little elevated. Legs more robust.
Length, nearly 1 ¼ lines; breadth, quite ⅜ line.
Mount Manaia, Whangarei. Three.
A. rugosus, Broun. 2155. Man. N.Z. Coleopt., p. 1223.
Shining, fuscous, antennae red, club piceous, the pubescence most easily seen on the rostrum.
Thorax apparently longer than broad; coarsely, rather closely, and rugosely punctured. Scutellum absent. Elytra cordate, unusually short and broad, with irregular series of coarse punctures; 3rd and 5th interstices costiform, the 4th similar behind the middle, the 2nd also raised along the posterior declivity. The most remarkable feature in this species is the rather sharply defined sides, which almost appear marginated.
Length, 1 ⅛ lines; breadth, nearly ¾ line.
Waitakerei Range. Unique.
A. pyriformis, Broun. 2154. Man. N.Z. Coleopt., p. 1223.
Robust, somewhat pear-shaped, shining, pubescence scanty and indistinct, piceous; the antennae, tip of rostrum, middle of thorax, and the base and apex of the elytra piceo-rufous.
Rostrum distinctly but not abruptly narrowed behind the antennal insertion, almost longitudinally finely rugosely punctate. Thorax longer than broad, more narrowed in front than behind, rather closely and rugosely but not very coarsely punctured, with a smooth median line. Scutellum obsolete. Elytra suboblong, wider at the base than the thorax, sides moderately rounded, slightly impressed before the middle, rather closely punctate striate, subcrenate, interstices finely seriate punctate. 3rd tarsal joint moderately dilated and excavate above. 2nd joint of the funiculus distinctly longer than the 3rd. An aberrant species.
♂. Length, quite 1 ¼ lines; breadth, nearly ¾ line.
Mount Arthur. Two.
A. piciclavus, sp. nov.
Shining, fuscous, antennae and tarsi rufescent, club nigrescent, its pubescence griseous; setae scanty, slender, rather elongate, quite inconspicuous.
Rostrum very slightly narrowed behind the antennal insertion, moderately punctate, slightly rugose, more finely and sparingly in front, and bearing numerous slender greyish hairs. Head immersed nearly to the eyes, which are only slightly prominent. Thorax slightly wider near the middle than elsewhere, rather more narrowed anteriorly than behind, not constricted, hind angles subrectangular; disc slightly convex, coarsely, closely, and somewhat rugosely punctured, the intervals narrow, the median line nearly smooth, frontal punctuation finer. Scutellum absent. Elytra cordiform, base oblique towards the suture, widest near the hind thighs, much narrowed
and declivous near the extrenity; rather coarsely striate-punctate, the punctures regular and distinctly separated, quite striate behind; the suture and interstices with fine serial punctures, 3rd and 5th slightly elevated throughout, the 2nd towards the extremity only. 2nd joint of the funiculus longer than the 3rd. Penultimate joint of the tarsi distinctly broader than the 2nd, not lobate.
Underside shining, piceo-fuscous, minutely pubescent, rather coarsely and irregularly punctate, mesosternum smooth in front, metasternum and basal segment broadly impressed.
When compared with A. sternalis, its nearest ally, the cordiform elytra are seen to be broader and regularly sculptured, the thorax is much less narrowed in front, with more rugose and closer punctures, the rostrum is subopaque instead of shining, and the vestiture is entirely different.
Length, 1 ¼ lines; breadth, nearly ½ line.
Clevedon, Hunua Range.
Pselactus, Broun. Man. N.Z. Coleopt., p. 972.
Body robust, transversely convex, slightly nitid, sparsely but distinctly setigerous.
Rostrum about as long as the thorax, stout and moderately broad, parallel; female rather more slender and elongate, but not very narrow. Head globose, rather short, curvedly narrowed anteriorly, a little depressed towards the rostrum, which is about half the width of the occiput. Scrobes directed obliquely downwards. Scape short, moderately curvate and slender, thicker at the extremity, inserted medially, a little further back in the female, it reaches the eye. Funiculus much longer than the scape, basal joint stout, 2nd rather longer than 3rd, joints 3–7 submoniliform, transverse, 7th larger than the preceding one. Club oblong-oval, densely pubescent, indistinctly annulate. Eyes placed in front of the head, widely distant, depressed, transverse, suboval, truncate in front. Thorax of nearly equal length and breadth, its sides distinctly rounded, obsoletely constricted in front, base truncate. Scutellum absent. Elytra oblong, evidently broader than the thorax, the shoulders a little curvedly narrowed, their sides slightly rounded, posterior declivity nearly vertical. Legs moderate, tibial hooks strongly developed. Tarsi very long and slender, penultimate joint slightly expanded and bilobed; claws minute.
Anterior coxae contiguous. Prosternum deeply incurved. Mesosternum on an abruptly lower level than the metasternum, which is shorter than the basal 2 ventral segments and somewhat angularly impressed behind, 2nd segment rather shorter than the 1st, the suture sinuate.
In some respects similar in structure to the Crotian Cotaster, but the thickset body, depressed transverse eyes, the short slender somewhat arcuate scape of the male (which, however, is longer and less curved in the female), the short rounded thorax, abbreviated metasternum, contiguous anterior coxae, and the absence of the scutellum, taken together, prevent its location in the vicinity of the section in which Cotaster has been placed. The front of the prosternum, too, is angularly depressed, but in front of and beyond the coxae an elevated area comes in contact with them, whilst a slight angular process, apparently cariniform in the middle, projects behind them. The setae are suberect, slender, and in unabraded specimens rather thickly scattered over the elytra. It is an inhabitant of the seashore.
Pselactus punctatus, Broun. 1755. Man. N.Z. Coleopt., p. 972. (Plate XVI, fig. 14.)
Piceous, slightly nitid, antennae and tarsi piceo-rufous, pubescence yellowish.
Rostrum with moderate, somewhat longitudinally rugose punctuation, rather finer but not rugose in front, the occiput moderately punctured. Thorax coarsely but not very closely punctured, more finely at the apex, more rugosely at the sides. Elytra rather coarsely striate-punctate, the spaces between the punctures as large as the punctures themselves, the suture and interstices indistinctly seriately punctured, more rugose in the female than the male.
Underside shining, piceous, with some minute slender but quite perceptible brassy setae. Front of prosternum with shallow, the metasternum with rather coarse, punctures; 2nd ventral segment more finely and distantly, the terminal closely and finely, punctured.
Female.—Rostrum hardly appreciably longer or more slender, its punctuation fine, with four or five setigerous and more distinct punctures near the apex.
♂. Length, 1 ¾ lines; breadth, ⅝ line.
Taranaki; on the underside of logs imbedded in sea-sand.
P. ferrugineus, sp. nov.
Rostrum and thorax rufous but not dark, the elytra pale castaneo-rufous, legs darker, antennae ferruginous, tarsi testaceous; pubescence yellow.
Female.—Similar to the same sex of P. punctatus but with the scape rather shorter and more curved, like that of the male. The rostrum and head with slightly finer sculpture. Thorax a trifle shorter, and, instead of being nearly glabrous, bearing numerous slender yellow hairs. Elytra less rounded at the sides and rather broader behind; the pubescence more seriate.
♀. Length, 1 ⅞ lines; breadth, nearly ¾ line.
Inosomus, Broun. Man. N.Z. Coleopt., p. 739.
Body robust, subparallel, narrowed anteriorly but not at all behind, coarsely sculptured, subopaque, sparingly but distinctly setose, on the posterior declivity especially.
Rostrum short and broad, subparallel, without any basal line of demarcation but on a slightly lower plane than the head. Scrobes deep, expanded in front of the eyes. Head short and broad, curvedly narrowed to the width of the rostrum, strongly globose underneath. Eyes depressed, strongly transverse, their greatest bulk below, and, though large, hardly visible above. Scape very short and stout, still thicker at the extremity, medially inserted, and attaining the front of the eye. Funiculus longer than the scape, compactly articulated, basal joint as long as the following 3 combined, joints 2–7 transverse. Club broadly oval, apparently triarticulate, the glabrous basal joint half of the whole length. Thorax slightly broader than it is long, truncate at base, somewhat curvedly narrowed towards the front, scarcely at all constricted there. Scutellum small but distinct. Elytra oblong, as wide as the thorax; broadly rounded, distinctly marginated, and denticulated behind; the base slightly biarcuate. Femora short and stout, with 3 or 4 minute denticles underneath. Tibiae straight, moderately slender; the anterior with a nearly straight mucro at the external apex, and a minute denticle at the inner angle; the 4 hind pairs are prolonged externally and bifid, the inner angle of the prolongation is slightly
longer than the other, and appears hooklike. Tarsi nearly glabrous, elongate and slender, 3rd joint also rather narrow, not lobate; claws distinct.
Prosternum deeply incurved in front, the coxae large, prominent, almost quite contiguous. Intermediate coxae not at all widely separated by the minutely margined mesosternal process; the mesosternum itself is longer than usual. Metasternum broadly sulcate behind, of about the same length as the abdomen. Basal ventral segment very short at the sides, obviously truncate behind, and on a higher level than the very short 2nd segment; 3–5 on a still lower plane, but level with the narrow epipleurae.
Dr. Sharp stated that “this is a remarkably distinct genus, having the appearance of a Scolytid,” &c.
The Indian Himatium has similar eyes, but the anterior coxae are widely distant from each other. In the genus Coptorhamphus, pertaining to Borneo and Java, the femora are armed with an acute tooth. Stenoscelis is undoubtedly more nearly similar, but is at once distinguishable by its obsolete scutellum; its species have been found in South Africa, St. Helena, and Japan.
In the New Zealand list I place it between Pselactus and Xenocnema. The old name, Stenopus, has been superseded by Inosomus.
Inosomus rufopiceus, Broun. 1312. Man. N.Z. Coleopt., p. 739. (Plate XVI, fig. 13.)
Rufo-piceous, slightly nitid, antennae and tarsi dark red.
Rostrum coarsely longitudinally rugose, with some slender erect setae. Head rather closely and finely punctate. Thorax convex, moderately closely and coarsely punctured, finely near the smooth apical margin, very closely and rugosely at the sides, which underneath are minutely dentate or crenulate. Elytra almost punctate-striate, the sutural striae deep but not distinctly punctured, interstices more or less rugose and near the sides and apex studded with minute tubercles; shoulders slightly prominent and reddish.
Underside shining, sparingly setose. The metasternum with only a few rather fine punctures; the prosternum and 1st ventral segment with coarse sculpture.
Length, 1 ⅞ lines; breadth, nearly ¾ line.
Wellington; Otago; Greymouth; and at Howick, near Auckland. Apparently rare, and without well-marked sexual distinctions.
Xenocnema, Wollaston. Man. N.Z. Coleopt., p. 536.
Body robust, subparallel, rather broad, subdepressed above, apparently glabrous, but bearing some slender hairs on the hind part of the elytra and conspicuous yellow setae at the extremity of the rostrum.
Rostrum quite half the length of the thorax, in front quite as broad as the head, without any basal demarcation, its apex depressed and emarginate in the middle. Mandibles prominent, bifid at apex. Scrobes subapical, deep, and linear, and extending obliquely inwards at a considerable distance from the eyes. Scape proportionally rather slender, gradually incrassate, inserted medially, and attaining the middle of the eye. Funiculus 7-articulate, short and compact, the basal joint short, truncate at the apex and produced (usually) inwardly, 2nd hardly longer than 3rd. Club ovate, sometimes elongate and narrow and acuminate, quadriarticulate, the basal joint large. Head short and broad. Eyes quite lateral, somewhat transversely oval, slightly convex. Thorax subquadrate, with a deep short stricture close to the apex, posterior angles oblique and obtuse. Scutellum distinct, but relatively small. Elytra slightly wider than thorax at the base, humeral angles slightly porrect; they are subparallel or very gradually
narrowed backwards, and do not always cover the pygidium entirely. Front coxae only moderately separated. Metasternum evidently medially sulcate, nearly as long as the abdomen. Basal ventral segment truncate behind, very distinctly separated from and on a higher level than the shorter 2nd, 3rd and 4th each not much shorter than the 2nd, all except the basal one on the same level as the epipleurae. Legs finely setose, rather short. Tibiae somewhat laterally compressed; the anterior, at the inner angle, with a stout spur directed outwards, the external angle bidentate; the 2 hind pairs strongly curvedly expanded inwardly, and externally terminating in a broad lamelliform process which is minutely denticulate at the extremity, the inner ends with a small spur. Tarsi sparsely rubescent, basal joint about as long as the terminal one, which, in the posterior pair particularly, is rather slender; claws rather small but distinct; 3rd tarsal joint indistinctly lobed.
This curious genus, owing to the hylastideous structure of the tibiae, is placed last on our list, near Inosomus, from which, however, it is essentially different. Its single exponent lives in kauri timber (Agathis australis), and varies considerably in bulk and coloration.
Xenocnema spinipes, Wollaston. 953. Man. N.Z. Coleopt., p. 537. (Plate XVI, fig. 15).
Piceo-rufous or piceous, moderately nitid.
Rostrum closely and rather finely longitudinally rugose and punctate. Head finely and distantly punctured. Thorax slightly longer than broad, its sides nearly straight, rather closely and finely punctured, the apex and a linear median space nearly smooth. Elytra with deep, regular, closely punctured striae; interstices obtusely costiform, each costa with a finely punctured definite groove along the middle, so that the interstices appear duplicated.
Underside shining, nearly glabrous, almost regularly, moderately finely, relatively punctured, the abdomen more coarsely, the terminal segment, however, and the mesosternum behind very closely and finely.
Female.—Rostrum oblong, the dense punctuation of the head ceasing abruptly behind the eyes, occiput smooth and shining, thorax gradually narrowed anteriorly.
♂. Length, 3 lines; breadth, ⅞ line.
The description has been taken from specimens in my own collection. The maximum measurements are given. Wollaston's specimen was only half as large, 1 ⅔ lines.
Hectaeus, Broun. Ann. Mag. Nat. Hist., August, 1904
Body small, subdepressed, elongate but not parallel, finely setigerous, shining, quite red.
Head and rostrum combined as long as the thorax. Rostrum in front as broad as the occiput, subpterygiate there, incurved at the middle, arched; at its base on a lower level than the head. Scrobes subapical, quite open and visible above. Head globose, with a frontal fovea. Scape flexuous, finely setose, elongate and stout, gradually incrassate, inserted near the apex, and attaining the front of the thorax. Funiculus also very long, laxly articulated, basal joint large, joints 2–7 gradually decrease in length, 2nd longer than broad, only slightly longer than 3rd. Club oblong-oval, indistinctly annulate. Thorax elongate, oviform, without any frontal stricture, its base rounded, the disc nearly flat. Elytra longer than the
thorax, rather broader, of almost similar form, incurved at the base. Legs moderately long and stout; tibiae gradually and slightly expanded, sub-truncate at the extremity, with a slender mucro at the inner angle. Tarsi moderately stout, the anterior rather short, with their 3rd joint slightly bilobed, but not expanded; the corresponding joint of the other pairs concave but not lobed, the terminal as long as the basal 3 conjointly, with distinct claws.
Prosternum elongate, emarginate in front. Anterior coxae slightly separated, placed near the hind margin of the prosternum; the intermediate pair distinctly, the posterior widely, separated. Metasternum short. Abdomen elongate, basal 2 segments broadly impressed, 3rd and 4th moderately short.
The disproportionally long and stout antennae, the complete absence of the tibial hooks and scutellum, and its apparently blind condition, the eyes being obsolete or altogether wanting, make its position unique. In the genus Idus these important characteristics are almost precisely similar, with the exception of the antennae, but it belongs to the Pentarthrides. Both genera are concolorous, and are found amongst leaves on the ground.
Hectaeus rubidus, Broun. Ann. Mag. Nat. Hist., August, 1904. (Plate XVI, fig. 10.)
Nitid, ferruginous, antennae and tarsi testaceous; sparingly clothed with suberect slender yellow setae, the legs with more obscurely coloured ones.
Rostrum a little uneven, with indefinite sculpture. Thorax not twice as long as broad, its sides gently and regularly rounded, nearly flat, moderately coarsely but not closely punctured. Elytra subdepressed, their sides rather less rounded than the thorax, evidently striate-punctate, the punctures subquadrate and distinctly separated, substriate behind, the suture and interstices seriate-punctate.
Metasternum and basal ventral segments distinctly but not closely punctate.
The female, from which the orignal description was drawn up, has a rather narrower and less apically dilated rostrum, with filmlike slender squamae at its base.
♂. Length, 1 ⅛ lines; breadth, nearly ⅜ line.
Broken River, Canterbury. One of each sex.