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Peratophyga beta sp. n.
Peratophyga beta  (holotype)
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14mm. The bands on both wings are narrower, more rufous than in the
majority of trigonata specimens, with a double convexity on the outer
margin of each such that the one on the right forewing resembles the Greek
letter ‘beta’. The male genitalia are diagnostic: the spining on the dorsal
margin of the lower portion of the right valve extends well down towards the
base rather than being restricted to the apex, and the anterior margin on the
left has a distinct step at one third. The cornutus is somewhat larger and
narrower than in the other species, the secondary spines smaller, more even.
Holotype
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SARAWAK: Gunung Mulu Nat. Park, R.G.S
Exped. 1977-8 (J.D. Holloway et al.) Site
15, February, Camp 2, G. Mulu, 500m, 401464, mixed dipt. for. BM
geometrid slide 10531.
Paratype .
General
data as holotype but Site 20, Mar-Apr, W. Melinau Gorge, 150m, 422577 FEG3,
kerangas, BM geometrid slide 10537.
Geographical range. Borneo
Habitat preference. The specimens are from wet heath forest on a river
terrace and hill dipterocarp forest.
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