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Volume 73, 1943-44
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New Records of Collembola from New Zealand with Descriptions of New Species.
Part 2—Symphypleona.

[Read before Wellington Branch Roy. Soc., October 28, 1942; received by Editor, November 4, 1942; issued separately, June, 1943.]

This paper adds a further eleven new species and three new sub-species to the New Zealand Collembolan Fauna. Although most of the specimens described are small and even minute, this series includes some of the brightest coloured and most beautiful of our New Zealand Collembola.

Sub-family Sminthuridinae.

Genus Sminthurinus Börner.

Previously (Trans. Roy. Soc. N.Z., 71, p. 409) I described two endemic species and one sub-species belonging to this genus, from New Zealand; and to these I now can add a further three species, making a total of eight species and one sub-species known from this country. The following key will assist in their separation.

Key to the New Zealand Species of Sminthurinus.
1. Wart on Ant. III absent, black species with golden-brown appendages. S. nigrafuscus Salmon.
Wart on Ant. III present. 2
2. Wart on Ant. III dome-like, simple, with sometimes faint constrictions but without subdivisions. 3
Wart on Ant. III subdivided into sections. 6
3. Dark-blue species, claw with two pairs of outer teeth and one inner tooth, apex of mucro fused solid S. lividus sp. nov.
Colour otherwise, claw with inner teeth only or no teeth at all 4
4. Entirely black species. S. lichenatus sp. nov.
Yellow species. 5
5. Entirely yellow species. S. aureus Lubbock.
Yellow with dorsal saddle of violet to purple pigment. S. aureus sub-spec. purpureus Salmon.
6. Wart on Ant. III subdivided into three sections. 7
Wart on Ant. III subdivided into four sections. 9
7. Outer edge of claw with tunica having serrated edges. S. terrestris Womersley.
Outer edge of claw without any tunica. 8
8. Abdomen with laterally a large white ocellus-like marking. S. oculatus Womersley.
Abdomen with a large yellow hexagon surrounded by a wide circle of yellow markings. S. duplicatus Salmon.
9. Olive-green species with one pair of outer lateral teeth and one inner tooth to claw. Outer edge of claw serrated basally. Mucro apically upturned and slightly recurved. S. glaucus sp. nov.
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Sminthurinus lividus. Plate 2, figs. 16.

Colour: In life, dark slatey-blue with four light-dorsal intersegmental bands; paler blue ventrally. Mounted, a deep blackish-blue coarsely granular pigment all over the body and appendages except for the distal halves of the dens, the mucrones and the claws, which are colourless. A suggestion of brownish-red around the periphery of each ocellar field. Ocellar fields black. A small raised brilliant-white spot on the inner top margin of each ocellar patch.

Clothing: On the body and appendages of occasional short plain setae, which are larger and more numerous around the posterior region.

Body: Length up to 0.8 mm. Antennae approximately twice as long as front of head, the four segments related as 11:21:42:98. Ant. III with very large undivided wart-like organ which is in contact with the surrounding cuticular granules. Ant. IV apically truncated with two exsertile knobs and 8–9 sensory bristles. Ant. IV faintly subdivided into 12 sections. Ocelli eight to each side, central one extremely small, posterior one smaller than remaining six, which are large and equal. Cuticle finely granulate.

Legs: Claw with single inner tooth at two-thirds down and two pairs of outer teeth, one at half-way down and the other at two-thirds. Empodial appendage with equal inner and outer lamellae, no tooth on inner lamella but terminal bristle long, much over-reaching tip of claw. Two clavate tenent hairs to each foot, of which one is much longer and stouter than the other.

Furcula: Dens to mucro as 26:11. Mucro boat-shaped, fused at apex for one-eleventh of its total length. Inner lamella strongly crenulate.

Locality: Karori Hills, in leaf mould in bush-clad gullies. (Author's Coll.).

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Type: Slide 3/1284 Dominion Museum Collection.

Sminthurinus glaucus sp. nov. Plate 1, fig. 8; plate 2, figs. 710.

Colour: In life, a greenish-brown with the head yellowish and a dark band down head between ocellar fields. Mounted, olive-green with occasional depigmented spots on the body. Head ochreous with patches of green on the sides, and a band of dark-green or brown down centre of head between ocellar fields. A half-circle of white dots on each side posteriorly. Legs and furcula pale greenish-yellow. Antennae violet. A small raised brilliant-white spot on the inner top margin of each ocellar field. Ocellar fields black.

Clothing: Occasional short plain curved setae on body and legs. On the antennae and furcula the setae are plain, straighter and relatively longer, each seta of Ants. III and IV arising from a distinct papilla.

Body: Length up to 0.75 mm. Antennae twice as long as the front of the head, the four segments related as 17:21:40:81. Ant. III with small wart-like organ, having four distinct subdivisions. Ant. IV faintly subdivided into 9–10 sections with apically small exsertile knob and 4–5 strong, straight sense rods. Ocelli eight to each side, the centre one very small; remainder all large and approximately equal.

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Legs: Claw with strong inner tooth at two-thirds. A pair of small outer teeth at four-fifths down, and outer edge of claw serrated basally. Empodial appendage with very broad angular inner lamella supplied with small tooth at the angle. Outer lamella narrower. Short terminal bristle arising just below apex and over-reaching tip of claw. Three clavate tenent hairs half as long as the claw to each foot.

Furcula: Dens to mucro as 50:23. Mucro long and tapering, upturned apically and slightly recurved. Outer lamella strongly serrated.

Locality: Karori Hills. In leaf mould in bush-clad gullies (Author's Coll.).

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Type: Slide 3/1281 and Figured Paratype Slide 3/1289. Dominion Museum Collection.

Remarks: I have placed this species and the foregoing species (S. lividus) provisionally in the genus Sminthurinus on account of the structure of the wart-like organ on Ant. III and the nature of the clothing. It is possible, however, when further material has been obtained and if more similar species come to light, that the erection of a new genus may become necessary.

Sminthurinus lichenatus sp. nov. Plate 2, figs. 1113.

Colour: Black all over, legs pale dirty yellow, furcula very pale dirty yellow, antennae dark-brown on basal segments, with Ant. IV black.

Clothing: Sparsely clothed with very short curved plain setae with larger straight plain setae posteriorly.

Body: Up to 0.9 mm. in length. Antennae one-and-a-half times as long as front of head, the four segments related as 3:5:7:13. Ant. III with large wart-like organ undivided but with a suggestion of four constrictions. Ant. IV undivided, with two exsertile apical knobs and six short sensory rods. Ocelli eight to each side on black pigment patches, the central ocellus small, the others large and all equal. Cuticle strongly granulate.

Legs: Claw widened basally with small blunt inner tooth at angle of recession of wide portion nearly one-quarter down; a pair of large inner teeth just past centre, and a small, single inner tooth at nine-tenths down. No outer teeth, but 3–4 outer lateral serrations to each side. Empodial appendage nearly as long as claw with narrow outer and broad inner lamella and whip-like bristle arising just below apex and extending well beyond claw. Inner lamella with large blunt tooth at angle and 5–7 small teeth or serrations on inner edge. Four strongly-clavate tenent hairs, shorter than the claw to each foot.

Furcula: Dens to mucro as 45:17. Mucro distinctly granular, long and tapering, slightly upturned apically, and with both inner and outer lamellae strongly serrated.

Locality: Karori Hills, under lichen covering rocky outcrops. (Author's Coll.).

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Type: Slide 3/1276 and Figured Paratype Slide 3/1277. Dominion Museum Collection.

Genus Katianna Börner.

With the addition of the following new species, there now are four species and one sub-species of this genus known from New Zealand, and of these, three species are endemic.

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Key to the New Zealand Species of Katianna.
1. Claw with one inner tooth 3
Claw with two inner teeth 2
2. Yellowish species with darker mottling. K. australis Womersley.
Olive-green species with yellow or lighter green spots. K. australis sub-sp. tillyardi Womersley.
3. Clavate tenent hairs present on foot, mucro with serrated lamella. 4
Clavate tenent hairs absent, mucro with plain lamellae. K. venusta sp. nov.
4. Claw without tunica. Two elongate tenent hairs to each foot. K. antennapartita Salmon.
Claw with tunica, three clavate tenent hairs to each foot. K. purpuravirida Salmon.

Katianna venusta sp. nov. Plate 1, figs. 23; plate 2, figs. 2830.

Colour: This attractive bright-reddish coloured species when mounted shows a yellow ground colour with irregular dorsal bands and patches of bright red-brown and reddish-violet mottling on the sides. Head violet in front. Antennae dark red-brown on first three segments, Ant. IV deep-violet. Legs yellow with broad red-brown or violet bands. Furcula brownish mottled. Ocellar fields deep reddish-violet. Ocelli dark brownish-black.

Clothing: With dorsally many very long serrated setae in which the serrations are widely separated. Some of these setae on the body are equal in length to the dens. Setae of the furcula are plain. Plain and serrated setae both occur on the legs and antennae. On Ant. III the long setae are three-quarters the length of the dens, and each seta arises from a prominent raised socket. Several stout, spine-like setae on top of head.

Body: Length up to 1.25 mm. Antennae twice the length of the front of the head, the four segments related as 12:15:28:77. Ant. IV with 14–16 subdivisions and apically with exsertile knob, and 5–6 sensory bristles. Ant. III without peg-like organ. Ocelli eight to each side, the central one very slightly smaller than remainder, which are large and equal.

Legs: Claw with one inner tooth just above centre, no outer teeth. Empodial appendage with broad inner and narrower outer lamellae, the inner with a strong spine at the angle. Terminal bristle arising just before apex and over-reaching tip of claw. Clavate tenent hairs absent.

Furcula: Dens three times as long as mucro. Mucro boat-shaped with three plain lamellae and strong outer basal seta.

Locality: Karori Hills, amongst leaf mould in bush-clad gullies. Not very common. (Author's Coll.).

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Type: Slide 3/1288. Dominion Museum Collection.

Remarks: The absence of the peg-like organ on Ant. III and the peculiar structure of the setae may necessitate the erection of a new genus for this species if further similar species should be discovered in the future.

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Genus Parakatianna Womersley.

Four new species and three new sub-species now can be added to this genus in New Zealand, making a total of five species and three sub-species known from this country. Several of these species have the peg-like organ on Ant. III more wart-like than peg-like, and appear to be intermediate forms between Sminthurinus and Parakatianna. As, however, Ant. IV always is subdivided and the mucro has three lamellae, I consider them best included in the genus Parakatianna. The following key will assist in their separation:—

Key to the New Zealand Species of Parakatianna.
1. Claw with inner teeth only. 3
Claw with one inner tooth, one pair of outer lateral teeth and 8–9 outer serrations. 2
2. Entirely black species P. litorea sp. nov.
Black with dorsal surface orange-red. P. litorea sub-spec. luteaterga nov.
3. Black species with occasional spots or marks 4
Colour otherwise. 5
4. With large brilliant-white band across head between ocellar fields and bright orange-red band between antennal bases. Rest of body black. P. albirubrafrons sp. nov.
As above but with additional shining-white spots on thorax and abdomen. P. albirubrafrons sub-spec. niveanota nov.
With orange-red area on front of head; white, spot by each ocellar field and irregular orange red markings on dorsum P. cortica sp. nov.
5. Yellow or orange with irregular dark markings, white band between ocellar fields and red band between antennal bases. P. diversitata sp. nov.
Distinctly greenish with markings as above P. diversitata sub-spec. viridis nov.
Yellow, with greyish-green hexagonal markings forming lateral pigment areas and five reddish-brown transverse bands. P. hexagona Salmon.

Parakatianna litorea sp. nov. Plate 2, figs. 1416.

Colour: Typically black all over with numerous small yellow spots occurring irregularly all over the body. Antennae, legs, and furcula paler bluish-black with Ant. IV and the tibio-tarsi deep-black. Ocellar fields partly orange-red and partly black, the ocelli themselves dark-brown in colour. Two shining-white spots on the top inner corner of each ocellar field and two short white lines down the front of the head, below the antennae, sometimes joined by a cross-band.

Clothing: Well clothed with moderately long plain setae.

Body: Length up to 1.9 mm. Antennae one-and-a-half times as long as the length of the front of the head, the four segments related as 6:11:14:38. Ant. IV only indistinctly subdivided or not at all, and apically with exsertile knob and six sense rods. Peg-like organ on Ant. III more dome-like and small. Ocelli eight to each side, the central one very small, the remainder large with the exception of the

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central ocellus of the outer three and the posterior one, both of which are smaller. Rami of tenaculum with three teeth and basal appendages.

Legs: Claw with one inner tooth two-thirds down, two outer lateral teeth nearly half-way down outer edge, and a basal row of 8–9 serrations down outer edge. Empodial appendage with apical bristle extending beyond tip of claw and with inner lamella bearing one large and one small tooth at the angle. Three clavate tenent hairs about two-thirds as long as claw to each foot.

Furcula: Dens to mucro as 25:8. Mucro with inner lamella strongly crenulate.

Locality: Titahi Bay, amongst dry kelp thrown up among the rocks. Very common. (Author's Coll.). Easily obtained by submerging pieces of kelp in a rock-pool, when the Collembola come out and skip about on the surface of the water.

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Type: Slide 3/1255 Dominion Museum Collection.

Parakatianna litorea sub-species luteaterga nov. Plate 1, fig. 6.

In this sub-species the whole of the dorsal surface of the body excepting, sometimes, the anal segments, is coloured a bright orange-red, with the rest of the body black, as in the typical form. Occasional forms occur in which the orange-red is crossed by narrow black bands, and there always is a strong transverse dorsal band of black at the commencement of the furcal segment.

Locality: Same as typical form.

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Type: Slide 3/1258 Dominion Museum Collection.

Parakatianna albirubrafrons sp. nov. Plate 2, figs. 1720.

Colour: In life, black with always a very conspicuous broad brilliant shining white elevated band across the front of the head between the ocellar fields. Immediately below, between the bases of the antennae and adjoining the white band, there is a broad band of orange-red pigment. Two small but conspicuous dull-red spots dorsally on the anal segments. Ventral surface of body pale-bluish-white. Mounted, the red band is seen to contain, down each side near the margin, a row of three black spots. The lower edge of the red band is bordered with a narrow band of intense black, which also passes partly around the antennal bases, while across the lower part of the face there is another broad black band. An orange-red “anchor”-shaped mark on the front of the head surrounding the mouth. (In some specimens this is black.) Ocelli on black fields. The ground colour of the head is a bluish-white. A few irregular spots and markings may appear over the body in mounted specimens. Sometimes these are faintly indicated on living specimens if the latter are closely examined. Antennae dark-yellowish-brown, throughout. Legs lighter-yellowish-brown with bluish bands, and the apex of the tibiotarsi bright orange-red. Furcula pale-yellow with bright orange-red bands at apex of manubrium and of each dens.

Clothing: Sparsely clothed with short curved, plain setae with longer, straighter plain setae around the posterior region.

Body: Length up to 1.1 mm. Antennae one-and-a-half times as long as the front of the head (measured from mouth to vertex), the

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four segments related as 3:6:8:22. Sensory organ on Ant. III small and more wart-like than peg-like. Ant. IV with 12 subdivisions and two apical exsertile knobs surrounded by 6–8 sense rods. Rami of tenaculum with three teeth and large basal appendages, the anterior of which bears a long straight and a short curved seta. Ocelli eight to each side, the centre one very small, the posterior outer one small, the remainder all large. Cuticle very finely granulate.

Legs: Claw with a larger inner tooth at two-thirds down. No outer teeth. Empodial appendage with three broad lamellae, the general appearance lanceolate, and reaching down as far as inner tooth of claw. Generally four (sometimes, but rarely, five) strongly clavate tenent hairs, one of which usually equals the claw in length, the others about two-thirds as long as claw. The claws almost at right angles to the tibio-tarsi.

Furcula: Dens approximately three times as long as mucro. Mucro with basal “keel” and trilamellate, the inner lamella lightly crenulated, central and outer lamellae plain, and apex fused and lance-like for about one-tenth the length of the entire mucro.

Locality: Titahi Bay, beaten from tauhinu scrub on coastal cliffs.; common. (Author's Coll.).

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Type: Slide 3/1264. Dominion Museum Collection.

Parakatianna albirubrafrons sub-spec. niveanota nov. Plate 1, fig. 5.

This sub-species is identical with the main species in all respects except that there are in addition a series of shining-white spots on the body similar to that on the head. There are two large such spots on the anterior dorsal portion of the body, close together, one on each side of the mid-dorsal line. In front of these, two very small spots, and behind, two small but laterally elongated spots. Two large dorsal spots on the furcal segment and a very large and a small spot on each side of the abdomen. There is a pale-bluish-white mid-dorsal line extending halfway down the body from the neck and two irregular-shaped similar coloured areas along the posterior portion of each side of the abdomen.

Locality: The same as for the main species.

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Type: Slide 3/1265 Dominion Museum Collection.

Parakatianna diversitata sp. nov. Plate 1, fig. 4; plate 2, figs. 2123.

Colour: Yellow or orange with irregular orange or dark-brown markings on the body and conspicuous shining-white and orange-red bands across the front of the head as in P. albirubrafrons. Shining-white spots sometimes absent from body, but generally four dorsal anterior spots and one or two to each side. Generally 2–3 pairs of shining-white spots on ventral surface of abdomen. Ventral surface of body pale-yellow or dull-white. Antennae dark-brownish-yellow. Legs and furcula pale-yellow with orange-red at apex of tibio-tarsi. Manubrium and dentes as albirubrafrons.

Clothing: Similar to P. albirubrafrons.

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Body: Length up to 1.2 mm., otherwise similar to P. albirubrafrons.

Legs: Claw almost at right angles to tibiotarsus and with large inner tooth at two-thirds down. No outer teeth. Empodial appendage longer than in albirubrafrons, reaching almost to tip of claw, trilamellate and lanceolate in general appearance. Five strongly clavate tenent hairs (rarely only four) shorter than claw to each foot.

Furcula: Dens to mucro as 8:3. Mucro trilamellate, the inner lamella crenulate, the central lamella lightly crenulate basally. Outer lamella plain.

Locality: Karori Hills. Beaten from tauhinu scrub. (Author's Coll.). Very common.

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Type: Slide 3/1262 and Figured Paratype Slide 3/1263 Dominion Museum Collection.

Remarks: At first sight this species might be regarded as a variety of P. albirubrafrons, especially as the white and red marks on the front of the head are practically identical in both species. The distinctive colour, which makes it not unlike P. obscura Womersley in general appearance, coupled with the slight variations in the foot and mucro, and on the average its somewhat larger size make it, I think, a distinct species. Although inhabiting the same species of plant as P. albirubrafrons, so far it has been found only on inland situations, while albirubrafrons is found only in close proximity to the sea. No intermediate forms between these two species have been discovered.

Parakatianna diversitata sub-spec. viridis nov. Plate 1, fig. 11.

This sub-species differs from the main species in that the ground colour of the body, particulary on the sides, is distinctly green. Ventral surface of the body and the legs greenish. The irregular dark markings are of a much darker and richer brown than in the main species, and frequently they include small blotches of blue which intensify the general greenish appearance. There are 4–6 large shining-white spots on the anterior dorsal surface of the body arranged in pairs along the mid-dorsal line. 3–4 similar white spots along the sides of the body and three large white spots on the ventral surface of the abdomen.

Locality: Beaten from tauhinu, Karori Hills (Author's Coll.). Not so common as the typical form.

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Type: Slide 3/1282 Dominion Museum Collection.

Parakatianna cortica sp. nov. Plate 1, fig. 9; plate 2, figs. 2427.

Colour: General colour, in life, a deep reddish-black with lighter dorsal patches. Mounted, a deep bluish-black with an irregular-shaped area of orange-red over the dorsal surface of the body. This consists of numerous 4–5-sided pigment patches joined together into irregular-shaped areas. On the front of the head between the ocelli and antennal bases there is an area of orange-red pigment. Ocelli on black pigment patches with an intense shining-white spot on the inner dorsal margin of each ocellar field. Antennae dark-brown, yellow at the joints. Legs dark-bluish-black except for femoral segments, which are yellow, and the apex of each tibiotarsus, which is bright orange-red. Furcula pale-yellow.

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Fig. 1—Sminthurinus multidentata n.sp. X 18.
Fig. 2.—Katianna venusta n.sp. dorsal view. X 30.
Fig. 3—Katianna renusta n.sp. side view. X 30.
Fig. 4—Parakatianna dirensitata n.sp. dorsal view. X 36.
Fig. 5—Parakatianna albinubrafrons subspec. nireanoa nov. dorsal view. X 36.
Fig. 6—Parakatianna litorea subspec. luteaterga nov. dorsal view. X 18.
Fig. 7—Dicyrtomina superba n.sp. dorsal view. X 24.
Fig. 8.—Sminthurinus glaucus n.sp. side view. X 45.
Fig. 9.—Parakatianna cortica n.sp. side view. X 24.
Fig. 10.—Dicyrtomina spiculata n.sp. side view. X 30.
Fig. 11.—Parakatianna diversitata subspec. viridis nov. dorsal view. X 36.

In the dorsal views on this plate, all the heads are shown drawn up so that the pattern on the front of the face can be seen.

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Figs. 1–6—Sminthurinus lividus n.sp. Fig. 1—Foot. Fig. 2—Foot from behind. Fig. 3—Ocellar group. Fig. 4—Apex of Ant. IV. Fig. 5—Mucro and apex of dens. Fig. 6—Wart-like organ on Ant. III.
Figs. 7–10—Sminthurinus glaucus n.sp. Fig. 7—Mucro and apex of dens. Fig. 8—Apex of Ant. IV. Fig. 9—Foot. Fig. 10—Wart-like organ on Ant. III.
Figs. 11–13—Sminthurinus lichenatus n.sp. Fig. 11—Mucro and apex of dens. Fig. 12—Foot. Fig. 13—Wart-like organ on Ant. III.
Figs. 14–16—Parakatianna litorea n.sp. Fig. 14—Foot. Fig. 15—Ocellar group. Fig. 16—Mucro.
Figs. 17–20—Parakatianna albirubrafrons n.sp. Fig. 17—Mucro and apex of dens. Fig. 18—Peg-like organ on Ant. III. Fig. 19—Foot. Fig. 20—Apex of Ant. IV.
Figs. 21–23—Parakatianna diversitata n.sp. Fig. 21—Peg-like organ on Ant. III. Fig. 22—Foot. Fig. 23—Ant. IV.
Figs. 24–27—Parakatianna cortica n.sp. Fig. 24—Mucro and apex of dens. Fig. 25—Foot. Fig. 26—Peg-like organ on Ant. III. Fig. 27—Apex of Ant. IV.
Figs. 28–30—Katianna venusta n.sp. Fig. 28—Seta from body. Fig. 29—Foot. Fig. 30—Mucro and apex of dens.
Figs. 31–32—Sminthurus multidentata n.sp. Fig. 31—Mucro and apex of dens. Fig. 32—Foot.
Figs. 33–34—Dicyrtomina spiculata n.sp. Fig. 33—Foot. Fig. 34—Antenna.
Figs. 35–38—Dicyrtomina superba n.sp. Fig. 35—Foot. Fig. 36—Mucro and apex of dens. Fig. 37—Ocellar group. Fig. 38.—Ants III and IV.

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Clothing: Of numerous moderately-long plain setae.

Body: Length up to 1.5 mm. Antennae one-and-a-half times as long as the front of the head, the four segments related as 4:7:11:22. Peg-like organ on Ant. III small but prominent. Ant. IV with 9–10 ill-defined subdivisions and apically with a pair of sensory bristles and 3–4 sense rods. Ocelli eight to each side, of which the inner three are the largest, the outer three of medium size, the posterior one small and the central smallest. Rami of tenaculum, each with three teeth and large basal appendages, the anterior of which bears a strong spine.

Legs: Claw with one inner tooth at just past halfway down. No outer teeth. Empodial appendage trilamellate, the inner lamella with one large and one very small tooth at the angle. Apical bristle arising below apex of empodial appendage and extending well beyond apex of claw. Four clavate tenent hairs almost as long as the claw to each foot.

Furcula: Dens three times as long as mucro. Mucro with recurved apical tooth and the lamellae plain.

Locality: Karori, under the bark of fuchsia trees in bush gullies. (Author's Coll.).

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Type: Slide 3/1269 and Figured Paratype Slide 3/1270 Dominion Museum Collection.

Sub-family Sminthurinae.
Genus Bourletiella Banks.

Bourletiella arvalis Fitch, 1863.

A further locality for this species is under stones in the stream-bed, South Karori Stream. (Author's Coll.).

Bourletiella arvalis sub-species dorsobscura Salmon, 1941.

This species was taken from strawberry flowers at Waimate, Auckland (Coll. D. Spiller).

Bourletiella hortensis Fitch, 1863.

This species also was taken in large numbers under stones in the stream-bed, South Karori Stream (Author's Coll.), and was found at Waimate by Mr. Spiller on strawberry flowers.

Genus Sminthurus Latreille, 1804.

An endemic species belonging to this genus now has been found in Auckland, making three species in all now known in this country. They may be separated according to the following key:—

Key to the New Zealand Species of Sminthurus.
1. Species with inner teeth only to the claw and empodial appendage without teeth 3
Species with inner and outer teeth to the claw and empodial appendage also with teeth 2
2. Greenish-yellow species with one inner tooth, two pairs of outer teeth, and empodial appendage with two teeth on inner angle S. multidentata sp. nov.
3. Greenish species with two inner teeth and tunica to claw S. viridis Linné
Yellowish species with one inner tooth and tunica to claw S. denisi Womersley.
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Sminthurus multidentata sp. nov. Plate 1, fig. 1; plate 2, figs. 3132.

Colour: Ground colour of yellowish-brown, with green mottling on the sides of the body and on the front of the head. Furcal and anal segments green, legs and furcula pale-green. Antennae basally greenish-yellow. Ant. IV reddish-brown. Ocelli on black fields.

Clothing: Well-clothed with long, finely-ciliated setae. Five or six, larger plain stout setae on the inner edge of each tibiotarsus.

Body: Length up to 1.8 mm. Antennae one-and-a-half times as long as the front of the head, the four segments related as 3:7:9:22. Ant. IV with 18 subdivisions; apical exsertile knob and 5–6 sensory bristles. Ocelli eight to each side, all large and equal.

Legs: Claw with one large inner tooth at just above centre, two strong exterior lateral basal teeth at about one-quarter down and a further pair of smaller outer teeth at about halfway down. Empodial appendage with very narrow outer and broad inner lamellae, the inner with a very large blunt tooth and a smaller blunt tooth at the base, both just past the angle of the lamella. Whip-like bristle arises just before apex of empodial appendage and extends well beyond apex of claw. Tenent hairs absent.

Furcula: Dens approximately three times as long as mucro. Mucro with recurved apical and small pre-apical teeth in close contact at apex. Central lamella slightly granulate. Inner and outer lamellae smooth, the outer sometimes with a strong tooth about one-third back from apex. A strong basal mucronal seta on the outer edge of each mucro.

Locality: Waimate, Auckland, from flowers of strawberry plants. (Coll. D. Spiller).

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Type: Slide 3/1274 Dominion Museum Collection.

Sub-family Dicyrtominae.
Genus Dicyrtomina Börner.

With the addition of the following new species, the number of species of this genus occurring in New Zealand is increased to four. Three of these are endemic, and the other is a cosmopolitan species. The following key will assist in their separation.

Key to the New Zealand Species of Dicyrtomina.
1. Empodial appendage with spine on inner lamella 2
Empodial appendage without spine on inner lamella. Mucro serrated on the inner margin only. D. minuta Fabr.
2. Mucro serrated on inner and outer margins, claw with two inner teeth and three outer teeth D. superba sp. nov.
Mucro serrated on inner and outer margins, claw with one inner tooth, but no outer teeth. 3
3. Colour entirely lilac with white pointer-like mark and row of dots on each side D. spiculata sp. nov.
Colour ochreous brown with lateral patches of violet and depigmented spots and streaks D. nova-zealandia Salmon.
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Dicyrtomina superba sp. nov. Plate 1, fig. 7; plate 2, figs. 3538.

Colour: In life, this striking species appears red-brown with patches of ochreous. Mounted, a ground colour of golden-ochreous overlaid with many irregular-shaped patches of reddish-brown pigment. The strip of reddish-brown pigment down the front of the face is punctured by a series of small ochreous dots, and the ground colour in the face forms a radiating pattern between the patches of red-brown. Ocelli black on yellow fields, the yellow field crossed by a reticulation of lines which form irregular-shaped hexagons and in one of which each ocellus lies. The red-brown pigment on the anterior dorsum tends to form bands which are broken down the mid-dorsal line by a longitudinal streak of lighter yellowish ochreous. On each side of and on the dorsal surface of the two posterior segments a very deep violet-purple patch, the dorsal of which is punctured by several small ochreous dots. Antennae deep red-brown, legs ochreous, banded by bands of red-brown with small depigmented spots. Furcula pale-yellow. Four shining-white spots down each side of the trunk.

Clothing: Very occasional slender plain setae. On top of head and around posterior part of dorsum are occasional short simple spines, and there are seven similar spines down the centre of the face. On the anal segment one pair of very long and two pairs of shorter spines, the latter about half the length of the former. Legs and antennae evenly clothed with plain setae, and at apex with three stout spines.

Body: Length up to 1.5 mm. Antennae twice as long as front of head, the four segments related as 4:26:30:7. Ant. III with wart-like swellings and processes, and from about halfway along to just below the apex, a series of fine annulations. Ant. IV apically with a small exsertile sense knob, three long straight and one curved sensory bristles. Cuticle finely granulate. Ocelli eight to each side, all large and equal.

Legs: Claw with strong lateral and apical tunica, one strong outer tooth at one-third down, and a pair of strong outer teeth at two-thirds down. Two inner teeth, one at one-third down, the other at a half. The tunica finishes just before apex of claw, giving the appearance at first sight of an apical bristle to the claw. Empodial appendage with very broad inner and narrower outer lamellae, the inner lamella with strong spine at the angle; and with apical bristle arising just before apex and over-reaching apex of claw. No tenent hairs. 4–5 serrations on outer basal edge of tunica.

Furcula: Dens to mucro as 25:8. Mucro boat-shaped with strongly serrated inner and outer lamellae.

Locality: From leaf mould in bush-clad gully, Karori. (Author's Coll.).

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Type: Slide 3/1279 and Figured Paratype Slide 3/1280 Dominion Museum Collection.

Dicyrtomina spiculata sp. nov. Plate 1, fig. 10; plate 2, figs. 3334.

Colour: In life and mounted a beautiful brilliant deep-lilac colour all over body and appendage, the antennae a darker lilac, the ventral surface paler. Halfway up and a little to the rear on

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each side of the abdomen a large, conspicuous elongated white pointer-like mark surmounted by a row of four large white dots and resting on a row of two small white dots. Ocelli on black fields.

Clothing: Short simple setae on the body and appendages, sparse on the body, more numerous on the legs, antennae and furcula. On top of head and around posterior region of dorsum, a few simple spines. Several long plain setae on anal segment. Ant. IV with many long curved setae.

Body: Length up to 1 mm. Antennae one-and-a-half times as long as front of head, the four segments related as 5:18:21:6. Antennae on all segments except IV with numerous warty swellings and projections. Ant. IV without exsertile knob, but with several straight sensory bristles. Ocelli eight to each side, with the central one only slightly smaller than the remainder, which are large and equal. Cuticle finely granulate.

Legs: Claw with one inner tooth at about one-third down. Empodial appendage with equal inner and outer lamellae, the inner with a strong spine at the angle. Terminal bristle arising just below apex, long and wavy. Tunica present and terminating just before apex of claw. Tenent hairs absent.

Furcula: Dens to mucro as 16:6. Mucro boat-shaped with strongly serrated inner and outer lamellae.

Locality: Karori Hills amongst leaf mould in bush-clad gullies. Not very common. (Author's Coll.).

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Type: Slide 3/1286 Dominion Museum Collection.