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Zoology Publications from Victoria University of Wellington—Nos. 49 to 51

Genus: Rhodanella Salmon, 1945 — Rhodanella plumosa n.sp

Genus: Rhodanella Salmon, 1945

Rhodanella plumosa n.sp.

Figs. 29-34.

Two specimens, one immature, in Dr. Clay's collection although not conforming entirely to the specifications of this genus do in my opinion come so very close to it that I have placed them in Rhodanella.

Colour: White overlain by pale bluish-violet granulate pigment in dorsal and lateral areas of metathorax and Abds. I-IV.

Clothing: Moderately clothed on the body with long and short very coarsely serrated setae, almost feather-like in some cases especially round the posterior (Fig. 34). Setae of the antennae, legs, furcula mostly simple or only very finely serrated. Those of the ventral surface of body and head shorter and finely serrated.

Body: Length: up to 0.6 mm. Antennae only slightly longer than head as 16:13; the four segments related as 14:20:26:44. Ant. IV with slender both curved and straight sense rods and setae. Apex of Ant. III with a pair of exposed stout curved sense rods each in its own cuticular pocket. Ocelli on black pigment patches, eight to each side, unequal; the anterior pair the largest, the outer posterior two the smallest. PAO small more or less egg-shaped and double outlined, about as long as half the. diameter of the adjacent ocellus. Abds. III and IV subequal in length; Abds. V and VI fused; tenaculum not seen.

Legs: Claw as in Fig. 31 with a pair of small external lateral sub-basal teeth, two strong inner teeth and a short basal seta to each side. Unguiculus granulated, lanceolate, with broad semiciricular inner lamella and broad straight outer lamella. A single long slender non-clavate tenent hair to each foot almost as long as claw.

Furcula: Reaching forward to Abd. II. The manubrium related to the mucrodens as 30:95. Mucro indistinctly separated from dens, small, related to the dens as 91:4, and with three prominent teeth as in Figs. 32-33. Dens annulated and corrugated, the uncorrugated portion about 2.5 times as long as mucro.

Localities: Lachung, Sikkim, 8610′ altitude in moss on pine trunks in pine woods; Imphal, Manipor State in rotting Eichornig.

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