Genus Marpissa, C. Koch.
Marpissa leucophæum, sp. nov. Plate XI., fig. 10, 11.
Female.—Ceph. th., long, 3.3; broad, 2.9. Abd., long, 4; broad, 2.1. Legs, 1–4, 2, 3=5.5, 5, 4.8 mm.
Cephalothorax yellow-mahogany, dark-brown spots contiguous to four lateral eyes; sparse patches of light-yellow hairs on median line and marginal zone, strong fringe across frontal margin; pars thoracica moderately dilated, one-third longer than pars cephalica, latter aplanate, limited posteriorly by a somewhat oval fovea; profile line rises with a slight arch from
thoracic junction, slopes slightly forwards from second row of eyes; height of clypeus less than radius of an anterior lateral eye.
Anterior row of eyes slightly recurved, laterals are about their radius from centrals, which are rather closer to one another, and much the largest; posterior pair are slightly further apart and perceptibly larger than fore-laterals, are placed on dark-brown tubercular eminences; eye-area rather less than one-fourth broader than long.
Legs, first pair rather stout, yellowish, tinged with reddish-brown; hind pairs deep straw-colour; armature sparse light hairs, black spines, short and curved on femoral joints; femora of 1st dilated and compressed; genua and tibiæ cylindrical, rather shorter than cephalothorax, latter articles rather the longest; metatarsi and tarsi shorter and much slighter than former articles; 1 spine on inner and under side of genua; beneath tibiæ 3–4; metatarsi 2–2; spines on tibial and metatarsal joints of 2, 3–4 fewer and less regular; tarsal claws—1st pair, outer 1 strong tooth; inner claw, about 14 close fine teeth; claw-tuft strong; hairs linear, longer than claws.
Palpi straw-colour; whitish hairs.
Falces sensibly directed forwards, rather longer than three terminal joints of palpus, stouter than femora of 1st pair, transversely rugose; dark lake-chocolate colour.
Maxillæ dilated at extremity, rounded; labiu oval, apex truncated, furnished with coarse hairs; organs brownish.
Sternum oval, nearly twice as long as broad; coxæ longer than broad; coxal joints of 1st pair strongest, about breadth of lip apart; yellowish.
Abdomen elongated, pointed at spinners, moderately convex above; hairs sparse, pale-yellowish; pale fulvous; dorsal mark linear-ovate, cinereous, enclosing a series of fulvous oblique bars.Vulva yellowish red-chestnut; somewhat oval; two deep, circular fovea, divided by a longitudinal septum; posterior margins tumid, with an apparently natural depression, black spot in centre.
Male.—Ceph. th., long, 3.3; broad, 2.9. Abd., long, 4; broad, 2.1. Legs, 1, 4, 2, 3 = 7.8, 7, 6.5, 6 mm.
Cephalothorax does not differ essentially in form or colour from female's.
Legs differ from female's in their actual and relative lengths, but not in colour, or spine-armature.
Palpi yellowish; hairs sparse; humeral joint nearly equals three terminal articles in length, projects a short curved spine, near its articulation with cubital joint, which is rather strong, broadest at fore-end, projects a fine bristle; radial joint less than half length of cubital, produced on outer side into a rather short, pointed, black apophysis; clava oval; lamina bulbi
moderately hairy; basal ⅔ of bulb convex, yellowish, fore-third depressed, concave, pointed, reddish colour.
Abdomen in form, colouration, and pattern resembles female. Port Waikato, A.T.U.
Marpissa arenaria, sp. nov.
Female.—Ceph. th., long, 2; broad, 1.—Abd., long, 2.8; broad, 1.5.—Legs, 4, 1, 2, 3.
Cephalothorax light olive-brown, two brown median streaks terminate at black spots, in line with second row of eyes; margins of pars cephalica fairly clothed with adpressed white hairs, few erect black; from median indentation two bands of white hairs curve obliquely across pars thoracica to marginal zone, which is furnished with similar hairs; sides moderately dilated, caput aplanate; profile line rises rather abruptly from thoracic junction, slight slope across occiput; clypeus furnished with rather strong white hairs, directed towards each other; slopes sensibly inwards, height less than radius of a fore-central eye.
Anterior row of eyes sensibly recurved; irides pale-yellow hairs; eyes nearly equidistant, space between a central and lateral nearly equal to diameter of latter; posterior eyes not on eminences; eye-area one-fourth broader than long.
Legs clear brownish straw-colour; sparse white hairs, few erect black bristles; legs moderately long and strong, do not differ greatly in length or strength; genual and tibial joints about equal in length; curved spines on femora; tibial and metatarsal spines of 1–2, 3–3, 2–2; few spines on 3–4; tarsal claws—1st pair, inner claw, 9 short even teeth, 1 strong terminal tooth; outer claw, 2 moderately stout teeth.
Palpi resemble legs in colour, sparse white hairs.
Falces short, stout, directed somewhat inwards; straw-colour.
Maxillæ strong, rounded and dilated at extremity; labium oval, less than one-half length of maxillæ; organs yellowish.
Sternum oval, yellowish.
Abdomen elongate-oviform, somewhat depressed above, projects moderately over cephalothorax; rather sparsely clothed with light-yellow and white hairs; light olive-brown, a dark-brown linear-lanceolate mark, enclosing a pale streak, furnished with white hairs, extends the length of dorsal line; this mark is bordered by a wide band of close white hairs; lateral margins somewhat clouded with brown; ventral surface paler than dorsal; spinners moderately long, yellow-brown. Vulva somewhat reniform, moderately concave, margins dark - brown, centrally produced on superior side into a long, vermiform process, directed backwards; margins incurved on inferior side.
I am indebted to R. Glasson, Esq., for this example, which was captured on the sand-hills at Port Waikato.
Marpissa ari-hirta, sp. nov.
Female.—Ceph. th., long, 2; broad, 1.6. Abd., long, 2.5; broad, 1.3. Legs, 1–4, 2, 3 = 4.8, 4, 3.8 mm.
Cephalothorax blackish-mahogany colour; sparsely clothed with black and lanceolate copper-coloured hairs; rugulose; sides moderately dilated; pars cephalica aplanate, sides rather abrupt, projects over falces, limited posteriorly by a somewhat triangular indentation; pars thoracica one-third longer than caput; profile contour between a posterior eye and thoracic junction represents an obtuse angle, hind slope of which forms an angle of 60°, caput slopes sensibly forwards; clypeus very narrow.
Ocular area nearly one-third broader than long; anterior row of eyes sensibly recurved, separated from one another by a space equal to the radius of a lateral eye; irides sparse, golden-orange hairs; posterior eyes, not on eminences, slightly exceed anterior laterals in size.
Legs moderately stout; 1st rather exceed 2nd in length and strength; mahogany-colour, suffused with brown, metatarsi and tarsi lake tinge; 2nd pair duller hue; 3–4 yellow-brown, well-defined brown annulations; armature, moderately long, black and pale-yellow hairs; 4 spines on femoral joints; fine bristle on genual; beneath tibiæ of 1–2, 3–4; metatarsi 2–2, strong spines equal article in length; tibiæ of 3–4, 4 beneath; metatarsi have, besides circle, a single spine on inner side; outer claw, 1st pair, 1 strong tooth near base; inner claw, about 12 close fine teeth, 1 strong terminal tooth; claw-tuft linear hairs.
Palpi yellow-brown, suffused with dark-brown; white hairs, coarse black; cubital joint slightly exceeds radial in length.
Falces red-mahogany; somewhat oval, nearly as broad as long, inclined forwards; transversely rugose.
Maxillæ brownish-orange, base dark; about twice as long as broad, dilated at extremity, which is rounded, more prominent on inner side. Labium dark-brown, light apex; conical, apex concave, less than half length of maxillæ.
Sternum oval; black-brown, few fine hairs.
Abdomen linear-oviform, somewhat aplanate above; black-brown; moderately clothed with coarse black and coppery-yellow hairs; not well-defined, somewhat angular, bare patches on dorsal line; superior and central pair of spinners straw-colour, inferior pair brown-black. Ventral surface brown-black, four converging, longitudinal, yellowish streaks. Vulva represents a glossy, reddish-brown, transversely rugulose, moderate eminence, in centre of which is a large circular depression, on posterior half are two oval fovea, margins prominent, divided by a broad, curved septum, somewhat attenuated posteriorly.
Te Karaka, A.T.U.
Attus bimaculosus. Plate XI., fig. 9.
The female was described in vol. xix., “Trans. N.Z. Inst.” Owing to the description of the vulva having been inaccurate, a drawing of that organ, taken from a fresh example, captured on the summit of Ngongotaha, Rotorua, is given on Plate XI. Corpus vulvæ centrally, produced into a tapering pendulous process; the concavity is only moderately depressed, of a yellowish colour; on the face is a light-brown, beaded, involute mark.
|Fig. 1.||Linyphia rufocephala, sp. nov., vulva of female; a, inner view of male's palpus; b, outer.|
|Fig. 2.||Linyphia lagenifera, sp. nov., female.|
|Fig. 3.||Theridium nigrofolium, sp. nov., female.|
|Fig. 4.||Theridium helveolum, sp. nov., vulva.|
|Fig. 5.||Theridium truncatum, sp. nov., female, four times natural size.|
|Fig. 6.||Epeira mulleola, sp. nov.|
|Fig. 7.||Epeira tri-tuberculata, sp. nov., male.|
|Fig. 8.||Epeira tri-tuberculata, palpus.|
|Fig. 9.||Attus bimaculosus, vulva.|
|Fig. 10.||Marpissa leucophæum, sp. nov., falces, maxillæ, and labium of female.|
|Fig. 11.||Marpissa leucophæum, palpus of male.|