Hipoepa
plebejus
Rothschild stat. rev. Hypena plebejus Rothschild, 1920, J. fed. Malay St. Mus., 8: 130.
Hipoepa plebejus
Figure 339
Diagnosis. This species is very similar in pattern to fractalis but has forewings more of a brownish grey and is slightly smaller. The hindwings are darker. The male genitalia (slide 19404), compared to fractalis, have the costal curvature of the valve stronger distally rather than even. The uncus has a longer neck, a much shorter distal spur and a slightly shorter distal half. The aedeagus vesica lacks the basal cornuti (a hooked one dorsally and a bidentate one laterally) seen in fractalis. There is a small spine at the apex of the aedeagus (more robust in the holotype from Sumatra).
Geographical range. Sumatra, Borneo.
Habitat preference. The species is only known from a single male taken at Brumas in the lowlands of Sabah near primary forest before this was cleared for softwood plantations (see Chey, 1994).
