Chorsia williamsi Holloway sp. n.

Diagnosis

♂ 11mm. The forewing shape and rather worn facies bears some resemblance to that of carjacobsi, but the latter has some longitudinal strands of black in the basal part, a conspicuous white dot at the reniform, and a white subapical mark that is slightly more transverse than that in carjacobsi. The genitalia have the valves unusually paddle-shaped, with a distinctive dorsally directed spine just in from the centre of the ventral margin.

Holotype ♂

MALAYSIA: Sabah, Danum Valley, 170m, 4°58’ N 117°48’ E (S.J. Willott) 2° understorey, Bkt. Atur Rd., DVFC, 24.viii.93, BM noctuid slide 19219.

Geographical range

Borneo.

Habitat preference

The species was recorded (S.J. Willott, unpublished data) as frequent (29 individuals) in logged and pristine forest at 170m near the Danum Valley Field Centre in Sabah.

Genitalia: