Tussock Moth

Appearance

The angled hindwings and the subapical translucent patches of the pale-brown suffused forewings distinguish them from other Arctornis. The species differ in size and male genitalia: obtusa is larger, with the valve harpe longer and with a diagnostic central bulge.

Naming

Arctornis obtusa Walker comb. n.
Cassidia obtusa Walker, 1862, J. Proc. Linn. Soc., 6:130.
Aroa kinabaluensis Strand, 1910, Dt. ent. Z. Iris, 24: 206.
Cassidia kinabaluensis Strand; Holloway, 1976: 50.

Distribution

Borneo, Sulawesi.

Habitat

The species occurs frequently in a wide range of lowland forest types, and much more rarely at altitude, the highest record being from 1930m on G. Kinabalu.