Orvasca subnotata Walker comb. rev.

Orvasca subnotata Walker, 1865, List Specimens lepid. Insects Colln Br. Mus., 32: 502.

Euproctis polydorus Schintlmeister, 1994: 133, syn. n.

Diagnosis

Both sexes resemble somewhat the female of Somena similis (See Somena similis Moore comb.n ) and males of Nygmia atereta Collenette comb. n., but the forewing is paler with two distinct, fine, whitish fasciae crossing the brown area. The elongate valves of the male genitalia and the unusual bilobed sterigma of the female are also diagnostic.

Geographical Range

Oriental tropics to Borneo and Sumatra.

Habitat Preference

The species has been taken infrequently in lowland forest in recent surveys, but can attain pest levels.

Biology

The possibility that this species has been confused with others means that lists of host records need to be treated with some caution and may particularly overlap with those for Somena similis. No larval description has been located apart from those of Moore (1883), who may have confused Somena species and subnotata. Both his illustrations indicate the presence of tubercles on Al and A2, so these probably occur in subnotata. Host records (Sevastopubo, 1940; Browne, 1968; Kuroko & Lewvanich, 1993; unpublished IIE records) include: Anacardium, Mangifera (Anacardiaceae); Cycas (Cycadaceae); Hevea (Euphorbiaceae); Acacia, Sesbania (Leguminosae); Areca (Palmae); Citrus (Rutaceae); Litchi, Nephelium (Sapindaceae); Sonneratia (Sonneratiaceae); Theobroma (Sterculiaceae).

Genitalia: