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Chorsia
hemmingi sp. n.
 9mm. This is a slightly smaller species than perversa
but
with very similar facies. The forewing is slightly more variegated, the dark
discal mark is more definite, a spot with a paler ring. The apex is bisected by
a pale bar, posterior to which is a dark marginal zone that grades gradually
paler towards the tornus (this marginal area is more punctate in perversa).
The male abdomen has the eighth segment shorter, the tergite with a more
triangular sclerotisation and apodemes that are further apart. The genitalia
have the valves rather rectangular, with an apical, hook-like spine at the
costal corner. The sacculus is enlarged, extending almost to the apex, and is
obliquely notched distally.
Holotype
. SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D.Holloway et al.),
Site 7, January, Long Pala (Base), 50m, 324450, alluvial / secondary forest, BM
noctuid slide 18507.
Geographical
range. Borneo.
Habitat
preference. The only specimen is from disturbed alluvial forest.
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