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Volume 73, 1943-44
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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.