Phlebohecta Hampson

Type species: fuscescens Moore, India.

Synonym: Paraphlebia C. & R. Felder (type species: lithosina C. & R. Felder), praeocc.

This genus is the first of several Bornean genera to contribute to Clade 15, which includes the type species of this and the next two, together with one of two displaced taxa from Soritia. Both this genus and Trypanophora Kollar currently include one species group that is displaced to Clade 18; they are inseparable sister-taxa through the analyses of Yen et al. (2005) and are both represented in Borneo. Other species of Phlebohecta and Trypanophora are also displaced, one of each occurring in another subclade of Clade 18.

No character state uniquely defines this clade. The component taxa all have rather narrow forewings and are sexually dimorphic in wing size, but this also applies to members of the genera that are displaced to other clades. Several characters of the male and female abdomen are variously shared amongst at least some clade members, such as a tapered, apically acute posterior margin to the sternite and postero-ventral invagination on the tergite of the seventh abdominal segment of the female. Males of Phlebohecta and Trypanophora Kollar have the apex of the eighth abdominal tergite acutely bifid.

Phlebohecta fuscescens is generally dark blackish brown, but the patagia, the costal edge of the forewing and some of its interior veins, and the fringes of all wings are reddish-buff. The female is larger than the male and has an extensive whitish zone to over all of the basal half of the hindwing except the costa.

The male abdomen has the sternite deeply notched, with each side elongated into a broad, gently falcate lobe. The tergite is more entire but terminates in two curved spines separated by a moderate concavity. The genitalia have the uncus slightly bilobed. There are moderate processes arising from the base of the valve costa on each side and extending dorsally in close association with the tegumen. The valves are ovate, becoming more strongly sclerotised towards the ventral margin and having a dense field of inwardly directed dark hairs over the apical part. There is no saccus. The aedeagus is slender, straight, without ornamentation.