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Caulocera Hampson

Type species: crassicornis Walker, Borneo.

This is another of the diaphanous genera, species of which have a scale tuft on the scape of the male antenna. The wing venation is similar to that of Chamaita but R1 anastomoses with Sc in the forewing, and one species, the type, has the veins posterior to the bifurcate system reduced to four (Fig. 5d). The secondary sexual characters in males of the two species also differ considerably; the type species has a fold in the basal part of the forewing cell, but xantholopha Hampson has a hair pencil on the dorsum of the forewing and a fold within the dorsal area of the hindwing.

Fig 5d: Caulocera crassicornis Walker

The male abdomen of the type species has an unusual pair of sclerotised pockets with segments 2 and 3. The genitalia have a pair of spurs on a type of transtilla between the valves, and the valves themselves have an elongate band of densely packed, small, dark spines interior to the sacculus. The aedeagus vesica contains a row of hook-like spines and a separate conical one.

The female has an asymmetrically pyriform bursa set on a short, broad, sclerotised ductus. The neck of the bursa is densely irrorated with numerous small spicules, and there is a circular patch of coarser spines at the distal end. The ductus seminalis is reflexed on one side of the otherwise immaculate distal portion.

The genus is Sundanian, containing only the two species described below.

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