Go to National Library of New Zealand Te Puna Mātauranga o Aotearoa
Volume 70, 1940-41
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– 419 –
Sub-family Dicyrtomine Börner, 1906.
Genus Dicyrtomina Börner, 1906.

Antennae bent between segments II and III. Subdivisions on Ant. III and IV present or absent.

Represented in New Zealand by two species, one of which is endemic and the other exotic.

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Key to The New Zealand Species lOf Dicyrtomina.
1. Empodial appendage with spine on inner lamella.
Mucro serrated on inner and outer margins. D. nova-zealandica sp. nov.
2. Empodial appendage without spine on inner lamella. Mucro serrated on inner margin only. D. minuta Fabr.

Dicyrtomina nova-zealandica sp. nov. Plate 72, figs. 531–533.

Colour: Ochreous-brown having laterally on head and body large patches of violet with long depigmented streaks, spots and circles. Legs pale violet, furcula yellow. Antennae brown on I and II, purple on III and IV.

Clothing: Sparsely clothed with moderately long simple setae and with longer dorsal setae on anal and genital segments. Setae on head are rather spine-like as in the genus Katianna. Antennae well-clothed with relatively long setae.

Body: Length up to 1.4 mm. Antennae almost twice as long as head. Ant. I: II: III: IV as 7: 25: 30: 7. Ant. IV with terminal retractile knob. Antennal segments II, III and IV all with prominent warts and tuberculate out-growths. Ocelli, eight to each side, equal, on black pigment patches.

Legs: Claw with outer tunica and one prominent inner tooth at one-third. Empodial appendage with broad inner lamella bering a strong spine, and a narrower outer lamella. Sub-apical terminal bristle long and wavy, very much over-reaching tip of claw.

Furcula: Dens two and a-half times length of mucro. Mucro with two prominently and completely serrated lamellae. Setae of dens plain.

Localities: South of Bullock Creek, South Westland, amongst leaf debris in native forest. Brookby, Manurewa, Auckland, in leaf mould. (Coll. by E. D. Pritchard.)

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Type: Slide 3/995, Dominion Museum Collection.

Dicyrtomina minuta Fabricius, 1873. Plate 72, fig. 534.

Colour: Yellow, with a square black patch posteriorly. Ocelli on black patches. Antennae darker towards the apex.

Body: Length 1.2 mm. Ocelli, eight to each side. Antennae about twice as long as the head.

Legs: Claw with tunica and prominent inner tooth at centre. Empodial appendage with long sub-apical bristle reaching to the tip of the claw.

Furcula: Dens two and a-half times as long as the mucro and without serrated setae. Mucro with the inner margin only serrated.

Locality: Reported from Brookby, Manurewa Auckland, in 1936, by Womersley, and not found elsewhere since.