Eugoa crassa Walker

Lyclene crassa Walker, 1862, J. Linn. Soc. (Zool.), 6: 114.

Diagnosis

This species is the first of a sequence of six with rather similar forewing facies consisting of a single blackish discal dot, just interior to a diffuse but broad and conspicuous postmedial that is oblique and slightly curved so as to be concave distad. The male antennae are ciliate to serrate, and bipectinate in the sixth species. The first three species have the hindwings predominantly pale yellow to brownish yellow, and the rest have it brown or brown over the distal half. The first three species have lateral flanges to the saccus in the male genitalia. The largest of the six are crassa and its sister-species, with the postmedial much more oblique than in bipuncta Heylaerts. These sister-species are distinguished in the description of the next species.

Geographical Range

Borneo.

Habitat Preference

The species is frequent in various types of lowland forest, including that on limestone, wet heath forest and alluvial forest.

Genitalia: