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Chorodna
pseudobolima sp. n.
Medasina embolima Prout, sensu Holloway, 1976: 79.
Chorodna
pseudobolima 
(paratype)
Chorodna
embolima
(Sumatra) |
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36-38mm.
This species resembles C. embolima Prout comb. n. (Sumatra, Peninsular
Malaysia: Fig. 429) closely. The pale forewing costal band is clearly
distinguished from the rest of the wings, this being darker, duller brown than
in embolima. The margins are also dark, giving prominence to the pale
submarginals. The male genitalia have the distal costal process longer and more
acute than in embolima or the next species. The dorsal margin of the
costa has the hair-bearing process shallow: it is strongly produced in the other
two species. The saccular process is a long, narrow, digitate process directed
towards the tip of the distal costal lobe; it has a small, obtusely triangular
flap subbasally. The width of this digitate process is variable. The aedeagus
vesica lacks cornuti.
Holotype .
BRUNEI:
1618m, Bukit Retak, montane forest, 14.9.79 (Lt. Col. M. G. Allen) BM
geometrid slide 13326.
Paratypes: 1 as
holotype; 1 LP298, Ulu
Temburong, BRUNEI, 300 metres, 16.ii. 1982 (T. W. Harman); 2 SARAWAK: Gunung Mulu Nat. Park,
R.G.S Exped. 1977-8 (J.D. Holloway et al.) Site 12 (slide 13329),
February, FEG 2, Mulu, 200m. 386469, mixed dipt. for., and Site 20 (slide
13325), March, W. Melinau Gorge, 150m, 422577, FEG 3, kerangas; 1 SABAH: Mt
Kinabalu, Mesilau, 1500m. vii.ix.1965, Cambridge Expedition to Mt Kinabalu, 1965
(H.J. Banks, H.S. Barlow, J.D. Holloway) Brit. Mus., BM geometrid slide
13331.
Geographical range. Borneo.
Habitat preference. The species ranges from the lowlands to 2200m, but is
possibly more frequent in montane forests.
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