11-14mm. In facies this species is almost identical to I. harmonica Hampson
from the N.E. Himalaya. The submarginal band and the area between the stigmata
are distinctly darker than the rest of the forewing, and there are a few more
smaller dark areas distally and basally in the somewhat reticulate pattern. The
main difference is in the male genitalia. The valve in harmonica is less
strongly produced apically, marginally excavate, and with the harpe more slender
and with stronger curvature at the apex. The aedeagus vesica is larger, more
massively and extensively spined than in the Bornean species.
. SARAWAK: Gunung Mulu Nat. Park, R.G.S. Exped.
1977-8 (J.D. Holloway et al), Site 8, February, Camp 1, Mulu, 150m,
385470, mixed dipt. for. BM noctuid slide 10618.
( slide 14162)
general data as holotype but sites 7, 11, 16, 17, 23, 25;.7 examples
BRUNEI: Seria, Labi, Ulu Belait, Daerah Belait, Ulu Temburong (Lt. Col. M.G.
species is frequent in a range of lowland forest types (dipterocarp, alluvial,
swamp, limestone) and has been recorded once from as high as 900m (on G. Api),
and twice from secondary forest.
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