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Achrosis classeyi sp. n.
Achrosis classeyi  (holotype) |
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12mm. This species is allied to A. semifulva Pagenstecher
comb. n. (Sulawesi and eastwards) and A. obliquilineata Warren comb. n.
(N.E. Himalaya to Peninsular Malaysia). There is also an undescribed species in
Luzon. The forewings are paler than in the two described species, fawn rather
than grey, and the forewing postmedial is fine and oblique as in the Asian
species. The antemedial is similarly straight and oblique, compared with more
diffuse and irregular in the other species. There is a diagnostic brown dot at
the base of the forewing, a marginal brown semicircular patch just anterior to
the central angle. This last feature is seen in A. elegans West comb. n.
(Luzon) with similarly fawn forewings but diffuse, obscure fasciae. A.
elegans has a strong discal spot to the hindwing but this is only weak in A.
classeyi and absent in the other species. The male genitalia have the furca
pocket conical as in A. semifulva and the spurca group. The
aedeagus vesica has a bundle of relatively long, needle-like spines.
Holotype . SABAH: Poring, 1800ft, E.
of Mt Kinabalu, 20-23.i. 1976, primary forest (E. W. Classey) BM
geometrid slide 12788.
Geographical range. Borneo.
Habitat preference. The holotype is taken in an area of disturbed forest
on the lower slopes of G. Kinabalu.
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