Go to National Library of New Zealand Te Puna Mātauranga o Aotearoa
Volume 70, 1940-41
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Genotype: P. glaciata sp. nov.

Of Entomobrya facies but without large exterior lateral basal teeth to the claw.

The genus is represented in New Zealand by five species and one subspecies.

Key to the New Zealand Species of Pseudentomobrya.
1. Species with eight ocelli, all large. 2
Species with eight ocelli, two of which are smaller. 3
2. Claw with two small outer lateral teeth and five inner teeth. Mucro surrounded by long setae 4–5 times its length. P. proceraseta sp. nov.
3. Claw with small outer lateral teeth. 4
Claw without any outer teeth. 5
4. Claw with two small outer lateral teeth about one-fifth down. No inner teeth. Abd. IV 6–8 times longer than Abd. III. P. interfilixa sp. nov.
5. Claw with a pair of blunt inner teeth at centre and a single distal blunt tooth. Abd. IV 5 ½ times as long as Abd. III. Pale slatey-grey coloured species. P. glaciata sp. nov.
As above, but irregularly mottled along the sides with black. P. glaciata subsp. nigralata nov.
Claw with two pairs of inner teeth and single distal inner tooth. Abd. IV 4 ½ times longer than Abd. III, and Abd. VI with distinct projecting process. P. processa sp. nov.
Claw with two single inner teeth only. P. miniparva sp. nov.
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Pseudentomobrya glaciata sp. nov. Plate 61, figs. 346–348.

Colour: In life, pale slate-grey, sometimes with pinkish irridescence. Mounted, a ground of pale dull yellow, lightly suffused with very pale blue along sides of head and thorax. Ventral edges of thoracic pleura deep blue-violet. Sides of Abd. III blue-violet; sides of Abd. IV covered by an area of blue-violet broken posteriorly. Abd. VI with a blue-violet band on the anterior half. Furcula yellow, legs pale yellow but distally slatey-blue. Antennae basally pale bluish-yellow, changing on II and III to brown. Ant. IV dark slate coloured. Ocelli on black pigment patches.

Clothing: Both plain and delicately ciliated setae, mainly short, but with longer ones around tip of abdomen, on the legs, antennae and furcula. Dorsally, especially on the head and thorax, are many medium-length flexed setae.

Body: Length 1·8 mm. Antennae with a basal ring and two and a-half times as long as head, the four segments related as 9: 18: 20: 25. Ocelli, eight to each side, six large and two, the posterior inner two, very small. Tergum of mesothorax completely covers prothorax. Ventral tube short, cylindrical. Abd. IV five and a-half times longer than Abd. III.

Legs: Claw, inner margin with a pair of blunt teeth at centre and a single blunt tooth just past three-quarters. No outer teeth but a notch occurs on outer edge about one-quarter down. Empodial appendage narrow, lanceolate, two-thirds as long as claw. A single clavate tenent hair about as long as claw to each foot.

Furcula: Manubrium to mucrodens as 27: 35. Dens strongly annulated and corrugated, the non-annulated portion twice length of mucro. Mucro elongate and bidentate with basal spine which overtops sub-apical tooth. Sub-apical tooth longer than apical. Mucro surrounded by delicate ciliated setae.

Localities: Franz Josef Glacier, among the bare stones forming the terminal and lateral moraine. Under lichen and moss on boulders in the old glacial moraine deposits just below the glacier in the Waiho Gorge.

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Type: Slide 3/712 and Figured Paratype: Slide 3/713, Dominion Museum Collection.

Pseudentomobrya glaciata subspec. nigralata nov.

Differing from the typical species in having an irregular black mottling along the sides of the head and body.

Localities: Found in the same localities as the principal form.

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Type: Slide 3/732, Dominion Museum Collection.

Pseudentomobrya processa sp. nov. Plate 61, figs. 349–350.

Colour: Ground of pale yellow more or less suffused all over with pale violet and with additional darker violet bands as follows: Pale violet transverse bands around centre of mesothorax, metathorax, Abd. I and Abd. II. Abd. III almost wholly dark violet and tailing off along ventral surface of Abd. IV. Posterior three-quarters of Abd. IV dark violet with yellow dorsal and lateral patches

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just past midway. Abd. V posteriorly and Abd. VI wholly deep violet. Legs and antennae pale violet, the antennae very dark apically. Furcula yellow.

Clothing: Of short ciliated setae with posteriorly and on the legs longer ciliated setae. Dorsally on head and thorax are many flexed setae.

Body: Length 1·5 mm. Antennae twice length of head, the four segments in the proportion of 5: 12: 10: 16. Ocelli on black fields, posterior inner two smaller than remainder. Abd. IV four and a-half times longer than Abd. III. Abd. VI with a distinct posteriorly projecting process.

Legs: Claw with a pair of large inner teeth at two-thirds, a larger pair at about three-quarters, and a further small distal tooth. No outer teeth. Empodial appendage lanceolate and reaching to distal tooth. A single clavate tenent hair as long as claw to each foot. The inner edge of the claw has a distinct angle at about one-fifth down.

Furcula: Reaching to ventral tube. Manubrium to mucrodens as 21: 27. Dens strongly annulated and corrugated, the uncorrugated portion twice length of mucro. Mucro bidentate with basal spine, the apical tooth distinctly smaller than pre-apical. Mucro surrounded by ciliated setae.

Locality: Haast Pass, under moss covering tree-trunks.

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Type: Slide 3/717, Dominion Museum Collection.

Pseudentomobrya interfilixa sp. nov. Plate 61, figs. 351–352.

Colour: A ground colour of ochreous yellow overlaid with a coarsely-grained deep blue pigment with darker, narrower transverse bands on the posterior margins of the thoracic and first three abdominal segments. Abd. IV anteriorally with a transverse band of depigmented streaks.

Clothing: Of ciliated setae, those around the posterior being long. Dorsally on the head and thorax are many flexed setae.

Body: Length up to 1·4 mm. Antennae twice as long as the head, the four segments related as 8: 14: 12: 20. Ant. IV with a peculiar apical sense organ consisting of two projecting plate-like structures surrounded by ciliated setae. Ocelli, eight to each side, the posterior inner two smaller than the remainder. Abd. IV 6–8 times longer than Abd. III.

Legs: Claw with two very small lateral external teeth about one-fifth down. No inner teeth. Empodial appendage truncate on inner margin and about half as long as the claw. No tenent hair.

Furcula: Manubrium and mucrodens approximately equal in length. The dens strongly annulated and corrugated, the uncorrugated portion two and a-half times as long as the mucro. Mucro rather elongate with two teeth and basal spine; the pre-apical tooth the longer, and showing a decided return slope.

Localities: Weheka, from among dead tree-fern leaves in the forest; Maruia Valley, from amongst moss on tree-trunk.

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Type: Slide 3/720 and Figured Paratype: Slide 3/721, Dominion Museum Collection.

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Pseudentomobrya miniparva sp. nov. Plate 60, fig. 343.

Colour: Very pale yellow, almost white, with blue bands, as follows:—Around anterior margin of mesothorax and as two broken longitudinal stripes extending along each side, one along the ventral edge and the other about one-third up the side. A broad transverse band around posterior margins of Abds. II, III, IV, and V, and a similar band in the centre of Abd. IV. Traces of broken bands exist on Abd. I and on mesothorax and metathorax. There is blue pigmentation on the sides of the head. Legs pale blue, antennae darker blue, very dark at the joints and on Ant. IV. Furcula white. Ocelli on dark blue fields.

Clothing: Of ciliated setae and dorsally on the head and thorax many flexed setae.

Body: Length up to 0·75 mm. Antennae approximately twice length of head, the four segments related as 6: 10: 8: 25. Ocelli, eight to each side, the posterior inner two being very small, remainder all large. Head deeper than it is long. Abd. IV four and a-half times as long as Abd. III.

Legs: Claw with two strong inner teeth, one at about two-thirds and the other at three-quarters. No outer teeth. Empodial appendage lanceolate and about half as long as claw. A single clavate tenent hair longer than claw to each foot.

Furcula: Manubrium to mucrodens as 48: 64. Dens strongly annulated and corrugated, the uncorrugated portion twice as long as the mucro. Mucro short and deep with two teeth and a basal spine.

Locality: Fish River Gorge, Haast Pass, under totara bark.

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Type: Slide 3/724, Dominion Museum Collection.

Pseudentomobrya proceraseta sp. nov. Plate 61, figs. 353–354.

Colour: Ground colour of pale yellow overlaid with coarsely-granulated bluish-black pigment. Head yellowish dorsally; Abd. IV on dorsal aspect with yellow showing through. Posterior margin of third abdominal segment with a very narrow dark band. Legs and antennae blue, furcula yellow. Ocelli on black fields.

Clothing: Closely clothed with short, ciliated setae with longer ciliated setae around the posterior. Dorsally on the head and thorax are numerous flexed setae. On antennae, legs and furcula are many long ciliated setae.

Body: The usual length is in the vicinity of 0·8 mm., but longer specimens measuring up to 1·25 mm. are occasionally found. Antennae half as long again as head, the four segments related as 15: 24: 21: 47. Ocelli, eight to each side, all large but rather indistinctly separated from their fields. Abd. IV 3 ½–4 times as long as Abd. III. Ventral tube short.

Legs: Claw with two small outer lateral teeth about one-third down outer edge; five inner teeth arranged as one very large pair at just past one-third, a distal pair at two-thirds, and a single distal tooth near apex. Empodial appendage lanceolate and reaching to distal pair of teeth. A strongly-clavate tenent hair equal to claw in length to each foot.

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Furcula: Reaching to ventral tube; mucrodens a little longer than manubrium. Dens strongly annulated and corrugated, the uncorrugated portion three times as long as the mucro. Mucro long, bidentate, with basal spine and surrounded by long, strongly-ciliated setae which over-reach it. These setae are 4–5 times as long as the mucro and about one-fifth as long as the dens.

Localities: Ferguson's Bush, West Coast, under bark of rimu trees; Buller Gorge, near Westport, in old logs on edge of bush.

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Type: Slide 3/726, Dominion Museum Collection.