Biston brevipennata Inoue, 1982

Jiang, Nan, Xue, Dayong & Han, Hongxiang, 2011, A review of Biston Leach, 1815 (Lepidoptera, Geometridae, Ennominae) from China, with description of one new species, ZooKeys 139, pp. 45-96 : 66

Biston brevipennata Inoue, 1982 Figs 4382109

Biston brevipennata Inoue, 1982b, Bull. Fac. domestic Sci., Otsuma Woman’s Univ., 18: 176, figs 40e, 41b. Holotype ♂, Nepal: Lete, 2400 m near Nilgiri. (BMNH)

Diagnosis.

The present species can be distinguished from the other species in group II by the following characters: smaller sized (length of forewing: 23-25 mm in male); the forewing outer margin is less waved; the band basally of the forewing antemedial line is much thinner; the speckles scattered on the wings are dark brown, not black. In the male genitalia, the apex of the uncus is broader and shallowly bifurcated but narrower and round in the others; the juxta is more sharply pointed at tip.

Material examineds.

CHINA, Tibet (IZCAS): Gyirong, 18.VI.-23.VII.1984, coll. Yan Zhaoxing and Pu Qiongzhi, 2♂; Zham, 2200 m, 25.VI.1975, coll. Wang Ziqing, 1♂.

Distribution.

China (Tibet), Nepal.