Hypertrocta Hampson

Type species: marmorata Hampson = posticalis Walker.

Synonyms: Camptocrossa Turner (type species selenotypa Turner, Australia, = brunnea Bethune-Baker, New Guinea); Moscha Walker (type species posticalis), praeocc.

This genus, as indicated in the description of Prolophota above, was traditionally assigned to the Hypeninae, but has more in common with the aventiine segregate of the traditional Acontiinae.

The facies is typically as described for the type species below. The labial palps are directed anteriorly, with the third segment only one third the length and depth of the second segment. The male antennae are coarsely ciliate.

The male abdomen has the eighth sternite broader than the tergite; its posterior margin is bilobed, the lobes separated by a wide but shallow concavity. The tergite has short apodemes, widely separated, and its posterior margin is rounded. The genitalia have a long, slender uncus with a slight hook apically. The valves are narrow, slightly tapering, apically blunt with a long, crinkled flange running up the interior edge of the costa. The aedeagus is short, and the vesica lacks conspicuous ornamentation.

The female genitalia have only vestigial or short apodemes on the eighth segment, but the ostium is set within it just posterior to a broad but shallow pouch at the distal margin of the seventh sternite (it is possible that slight angular processes laterally on this pouch may represent vestigial apodemes from the eighth segment). The ostium leads into a slightly tapering but unornamented ductus bursae that extends the length of the seventh sternite. The corpus bursae is narrow, elongate, divided into two by a central constriction. The basal part is asymmetrically swollen, with the ductus bursae arising from a short appendix from the basal part of the swelling. The distal part is pyriform, with a zone of sparse scobination immediately distal to the central constriction. This last feature may also be indicative of relationship to Arasada and relatives as suggested also for Aroana.

The genus contains the two type species of the generic names in synonymy. H. brunnea is very similar to posticalis but the paler subapical triangle on the forewing costa extends somewhat more towards the dorsum, and the forewings themselves appear to be slightly deeper. The male genitalia are very similar, but the female of brunnea has a shorter corpus bursae of more even width, without a constriction just basal to the centre. It occurs in New Guinea, Australia and the Solomons. A worn specimen of Hypertrocta from Sulawesi may also be brunnea.