Go to National Library of New Zealand Te Puna Mātauranga o Aotearoa
Volume 70, 1940-41
This text is also available in PDF
(23 MB) Opens in new window
– 312 –

Tribe Anurophorini Börner, 1906.
Genus Cryptopygus Willem, 1902.

Small species with Abd. VI concealed below Abd. V. Ocelli, postantennal organ and furcula all present, though the latter may be reduced.

This interesting and primitive southern genus is well represented in New Zealand by six species, of which five are endemic and the remaining one Australian.

Key to the New Zealand Species of Cryptopygus.
1. Mucro tapering, with apical tooth only or with no teeth. 2
Mucro with apical and pre-apical teeth. 5
2. Ocelli eight to each side, all large and equal. 3
Ocelli eight to each side, unequal. 4
3. Dens with two very long ventral setae almost as long as itself. Mucro with small apical tooth, claw with small inner tooth. Dark-blue species. C. minimus sp. nov.
4. Ocelli seven large and one small. Dens with two long ventral setae and one dorsal seta at apex. Very dark-blue species. Mucro with single terminal upturned tooth. Claw with a single inner tooth. C. okukensis sp. nov.
Dens with two long ventral setae. Mucro tapering without teeth but with narrow inner lamella. Claw with one strong inner tooth. Black species. C. niger Carpenter
5. Ocelli eight to each side, all large and equal. 6
Ocelli eight to each side, unequal. 7
6. Brilliant blue species with a tinge of violet on the head. Post-antennal organ equal to three ocelli in length. Dens with three prominent ventral setae. Mucro without inner lamella. C. haweaensis sp. nov.
Entirely blue species. Post-antennal organ equal to two ocelli in length, mucro with narrow inner lamella, and numerous long seta. C. loftyensis Womersley
7. Ocelli six large, two small, to each side. Post-antennal organ equal to two ocelli in length. Dens with two long ventral setae. Jet-black species. C. atratus sp. nov.

Cryptopygus minimus sp. nov. Plate 48, fig. 143.

Colour: In life, dark blue; mounted, dark blue, the head with a tinge of violet and the legs and antennae pale bluish-violet. Ocelli on black fields.

Clothing: Of comparatively long, plain setae.

Body: Length up to 0·65 mm. Antennae slightly longer than the head. Ant. I: II: III: IV as 14: 18: 15: 32. Head very long, mesotergum almost completely covering prothorax. Head: Th. I and II:

– 313 –

III: Abd. I : II : III : IV : V as 66 : 33 : 29 : 24 : 26 : 29 : 35 : 25. Abd. VI hidden under Abd. V. Ocelli eight to each side. Post-antennal organ large oval, not very clearly defined, but about equal to two ocelli. Ant. IV with long apical bristle and many long sensory setae.

Legs: Claw with single inner tooth at three-quarters. Empodial appendage two-thirds as long as claw, with broad inner lamella truncated at two-thirds and narrower outer lamella reaching to apex. Two clavate tenent hairs longer than claw to each foot.

Furcula: Very short, manubrium to dens to mucro as 15: 11: 4. The mucro tapering to small apical tooth. Dens with two very long ventral setae almost as long as itself.

Locality: Te Whaiti, Urewera Country, on the trunks of willow trees growing on the river bank.

[The section below cannot be correctly rendered as it contains complex formatting. See the image of the page for a more accurate rendering.]

Type: Slide 3/427, Dominion Museum Collection.

Cryptopygus okukensis sp. nov. Plate 48, figs. 139–142.

Colour: In life a very dark blue; mounted specimens show a uniform deep blue-black.

Body: Length 1·25–1·5 mm. Clothed with short hairs, longer setae occurring around posterior region. Tergum of mesothorax completely covers prothorax and is related to head as 12: 22. Antennae four-segmented, the segments related as 5: 8: 5: 10, slightly longer than head. Ocelli eight to each side, seven large and one small. Post-antennal organ approximately equal in length to two ocelli diameters and elliptical. Ventral tube small. Abdomen IV to Abd. III as 15: 9. Abd. VI hidden under Abd. V.

Legs: Lightly clothed with long setae. Claw with single internal tooth about halfway from base of claw. Empodial appendage lanceolate with broad inner and narrower outer lamellae. Single tenent non-clavate hair to each foot, longer than claw.

Furcula: Short, manubrium: dens: mucro as 6 : 3 : 1. Mucro tapering with single terminal upturned tooth. A pair of long setae ventrally placed at distal end of manubrium and two long ventral setae on dens. A long dorsal seta arises from end of dens and reaches almost to tip of mucro.

Localities: Okuke Pass, Canterbury, collected by W. E. Moore; Opotiki Beach, Bay of Plenty, under pohutukawa bark; Lower Hollyford Valley, under beech bark and rimu bark; Haast Pass, under moss on tree trunks and under beech bark.

[The section below cannot be correctly rendered as it contains complex formatting. See the image of the page for a more accurate rendering.]

Type: Slide 3/223, Dominion Museum Collection.

Cryptopygus niger Carpenter, 1925. Plate 48, figs. 144–145.

Colour: Black above, paler ventrally. Legs and furcula dark purple with pale mottling.

Clothing: Of short, plain setae.

Body: Length 1·5 mm. Antennae slightly longer than head. Ant. IV apically with small sensory knob.

Ocelli eight to each side, six large and equal, and two, the posterior inner two, smaller. Post-antennal organ oval, larger than ocellus.

– 314 –

Legs: In his original description, Carpenter stated the claw was without teeth; but I now find on re-examining his specimens that the claw has a strong inner tooth just beyond the centre; no outer teeth. Empodial appendage from one-third to a half as long as claw, with broad inner and narrow outer lamellae. Front feet with one, others with two clavate tenent hairs about as long as claws.

Furcula: Dens about twice length of mucro and with at least two long ventral setae. Mucro lightly curved and tapering, without teeth, but with narrow inner lamella.

Locality: Described originally from a large number of species collected at Ben More, Canterbury. Not found elsewhere since.

[The section below cannot be correctly rendered as it contains complex formatting. See the image of the page for a more accurate rendering.]

Paratypes: In the Canterbury Museum, Christchurch, New Zealand. Two paratype slides, 3/985 and 3/986, in the Dominion Museum Collection.

Cryptopygus haweaensis sp. nov. Plate 48, figs. 146–148.

Colour: In life a brilliant blue. Mounted, a clear prussian blue, varying from pale to dark, with the head, legs, and antennae violet. The ocelli on black pigment patches. Pale, almost colourless inter-segmental bands may be present on the anterior margins of all segments.

Clothing: Sparsely clothed with short plain setae.

Body: Length 0·9 mm. Antennae a little longer than head, four segments related as 12: 21: 16: 36. Ocelli eight to each side and equal. Postantennal organ elliptical and equal to three ocelli in length. Head: Th. I: II: III: Abd. I: II: III: IV: V as 13: 11: 8: 6: 6: 7: 7.

Legs: Claw with single very small inner tooth a little past half-way down. No outer teeth. Empodial appendage about one-quarter length of claw with very broad inner lamella reaching halfway to apex, and outer lamella which reaches tip. Two long clavate tenent hairs to each foot.

Furcula: Dens with three prominent ventral setae. Mucro long and tapering, with apical tooth and short backwardly-sloping sub-apical tooth. Dens related to mucro as 3: 2.

Localities: I have taken large numbers of this really beautiful species from Kidd's Bush, on the shore of Lake Hawea, in old logs and leaf debris; and from Peel Forest, Canterbury, under the bark of totara trees.

[The section below cannot be correctly rendered as it contains complex formatting. See the image of the page for a more accurate rendering.]

Type: Slide 3/452, Dominion Museum Collection.

Cryptopygus loftyensis Womersley, 1934. Plate 48, fig. 149.

Colour: Entirely blue, and the clothing is very heavy of numerous short simple setae.

Body: Length up to 1·2 mm. Antennae slightly longer than head, segments related as 17: 25: 23: 37. Ant. IV apically with small exertile sac. Ocelli eight to each side. Post-antennal organ elliptical and equal in length to two ocelli.

Legs: Claw with inner tooth just past centre. Empodial appendage about half as long as claw and with broad inner lamella. Two fine clavate tenent hairs as long as claw to each foot.

– 315 –

Furcula: Manubrium: dens: mucro as 35:28:7. Mucro with apical tooth, pre-apical tooth, and narrow inner lamella. Dens with numerous long setae.

Locality: This Australian species has been found in New Zealand in humus at Pukekaroro Creek, Hillsborough, Auckland, from whence it was reported by Womersley in 1936. It has not been found elsewhere.

Cryptopygus atratus sp. nov. Plate 48, figs. 150–151.

Colour: In life and mounted jet black all over, with sometimes, in mounted specimens, bluish tinge.

Clothing: Sparsely clothed with plain setae.

Body: Length 1·2 mm. Antennae slightly longer than head, four segments related as 2:8:6:12. Sensory knob at tip of Ant. IV Ocelli eight to each side, six large and two, posterior inner two, small. Post-antennal organ large and about size of two ocelli. Head related to meso-thorax as 47:27 and Abd. III to Abd. IV as 16:22. Ventral tube short and dome-like.

Legs: Claw with single inner tooth a little past half-way. No outer teeth. Empodial appendage about half as long as claw with outer lamella reaching to tip and broad circular inner lamella reaching about half-way. Two long clavate tenent hairs, longer than claw, to each foot.

Furcula: Short, manubrium: dens: mucro as 25:19:6. Mucro with prominent apical recurved tooth and smaller pre-apical tooth. Dens supplied ventrally with two long setae.

Localities: Lake Mapourika, under the bark of kahikatea trees; Ferguson's Bush, West Coast, under the bark of rimu trees; Lake Te Anau, under the bark of rimu trees; Bullock Creek, South West-land, under the bark of rimu trees; Lake Brunner, in bush soil and debris; Fish River Gorge, Haast Pass, under the bark of totara trees.

[The section below cannot be correctly rendered as it contains complex formatting. See the image of the page for a more accurate rendering.]

Type: Slide 3/438 and Figured Paratype: Slide 3/439, Dominion Museum Collection.