Go to National Library of New Zealand Te Puna Mātauranga o Aotearoa
Volume 70, 1940-41
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– 330 –

Genotype: P. fuscus sp. nov.

I have to propose here a new genus, which it is necessary to erect for the reception of an extraordinary insect of the Proisotomurus type, but in which all the setae of the body and appendages (except some on the dens) arise from prominent warts or papillae. Bothriotrichia are absent. Two species and a subspecies are known, one of which was originally described as an Isotoma.

Key to the Species of Papillomurus.
1. Claw with two inner teeth. 2
Claw without any inner teeth. Eight ocelli to each side, all large and equal. P. parvus Salmon
2. Eight ocelli to each side, of which two are reduced in size; dark-brown coloured species. P. fuscus sp. nov.
As above, but pale violet-brown in colour. P. fuscus subsp. pallidus nov.

Papillmurus fuscus sp. nov. Plate 52, figs. 209–211.

Colour: In life and mounted, uniform dark brown on body, a little paler on appendages with Ant. III and IV tinged with violet. Ocelli on black pigment patches.

Clothing: Heavily clothed with short plain setae and occasional larger coarsely-ciliated setae. These latter are mostly around posterior portion of the abdomen. All setae on head, body, legs, antennae, and manubrium arise each from a prominent raised papilla or wart. On dens two rows of such setae on each side, remaining setae of dens, except for a few near base, being non-papillose. Bothriotrichia absent.

Body: Length 1·6 mm. Antennae about twice length of head; the four segments related according to the formula 4: 7: 7: 7. Ocelli eight to each side, six large and the posterior inner two smaller. Postantennal organ smaller than on ocellus and oval. Ventral tube-short. Abd. III longer than Abd. IV as 9: 8.

– 331 –

Legs: Claw with two inner teeth, one at one-third, other at two-thirds, and two outer lateral teeth about one-third down outer edge. Empodial appendage about one-third length of claw, with broad inner and outer lamellae, former with small blunt tooth on its forward edge. Three strong clavate tenent hairs to each foot, about equal in length to inner edge of claw. A short basal seta on each side ofclaw.

Furcula: Manubrium to mucrodens as 14: 33. Dens annulated and corrugated. Mucro tridentate, with equal apical and sub-apical teeth and a small exterior lateral tooth. Unannulated portion of dens three times length of mucro.

Localities: Waiho Gorge, South Westland, under moss and lichen on stones; Lake Roto-iti, South Island, in leaf debris in beech forest; Buller Gorge, near Westport, in old logs; Summit, Haast Pass, in old logs; Opepe Bush, Taupo, in old logs.

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Type: Slide 3/497, Dominion Museum Collection.

Papillomurus fuscus subsp. pallidus nov.

A uniformly pale-coloured variety in which the colour in mounted specimens is a pale violet-brown with dark violet antennae. In life these are bluish-grey.

Localities: Alex Knob, Waiho, 3,000 ft., in old logs; Hollyford Valley, in logs in beech forest, 3,000 ft.

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Type: Slide 3/505, Dominion Museum Collection.

Papillomurus parvus (Salmon, 1937). Plate 53, figs. 229–230.

1937. Isotoma parva Salmon.

Colour: Dull reddish-brown to purple-brown, with pale purple to bluish-purple appendages.

Clothing: Short, slender hairs all over body, with occasional longer setae, especially around posterior region. All setae arise from prominent papillae.

Body: Length 1·2–1·5 mm. Tergum of mesothorax completely covers that of prothorax. Abd. IV and III approximately equal in length or III a little longer than IV. Antennae four-segmented and approximately half as long as trunk. Segments related in length as 7: 11: 11: 15. Ocelli eight on each side, all large and regularly arranged. Postantennal organ oval and about equal to an ocellus in length.

Legs: Claw with no inner teeth, but with a strong pair of outer teeth at one-third. Empodial appendage short with broad inner and outer lamellae. Tenent hairs absent.

Furcula: Dens twice as long as manubrium, prominently corrugated ventrally and provided on each side with double row of slender spines. Mucro with central conical tooth, terminal almost vertical tooth, proximal lateral oblique tooth and small dorsal sub-apical tooth.

Localities: Akatarawa and Butterfly Creek, Wellington, in leaf mould on the floor of the native bush.

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Type: Slide 3/194, Dominion Museum Collection.