Fascellina viridicosta Holloway sp. n.
♂♂ 15-16mm. This species is close in appearance to subsignata and inconspicua but has a more vinous tinge to the wings that lacks any silvery flecking (a feature of inconspicua), and with the green on the forewing more clearly restricted to a narrow costal zone, expanded slightly towards the apex. The course of the forewing postmedial is more as in subsignata, particularly on the underside, but the ground colour below is reddish-orange as in inconspicua. The male genitalia have the furca much as in subsignata but the right arm is irregularly curved. The gnathus is relatively longer.
Holotype ♂
SARAWAK: Santubong Mt., 300m. 10.ix. 1981 (Oxford Far East Exp.) BM geometrid slide 12716.
Paratypes
- 1 ♂ as holotype
- 1 ♂ SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), BM 1978-208, Site 20, Mar.-Apr., W. Melinau Gorge, 150m 422577, FEG 3, kerangas.
Geographical range
Borneo, Sumatra, Peninsular Malaysia (FRIM collection).
Habitat preference
The species is possibly associated with heath forest, as Santubong is in an area of such vegetation near Bako National Park.
Genitalia:
