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Ugia
viridior sp. n.
 ,  24-26mm. The ground colour is similar to that of eugrapha
but
the species is very much larger, more suffused with darker, somewhat greenish
brown and with narrower oblique fasciae that are edged paler basad. The markings
are thus closer to those of disjungens, which is also slightly smaller and grey; the
stigmata of fore- and hindwings are more conspicuously present in viridior.
The male genitalia are very similar to those of other Bornean species, except
the distal section of the valve is perhaps slightly narrower, with the angle on
its ventral margin near the centre rather than more subbasal.
Holotype
. SARAWAK: Gunong 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
10780.
Paratypes:
4
general
data as holotype but Sites 13 (3; February, Camp 2, Mulu, 500m, 401464, mixed
dipt. for.;) and 21 (1; March, W. Melinau Gorge, 130m. 423576, alluvial /
kerangas bank); 20, 1 BORNEO: Sabah, Danum Valley, 5°01' N, 117° 47' E, [various dates] ix, x.1987, 100m
and 150m (A.H. Kirk-Spriggs); 3,
1
BRUNEI:
30-60m, Labi, lowland forest and secondary veg. [various dates, 1978-80] (Lt.
Col. M.G. Allen); 3♂♂ (slide 15944) BRUNEI: 300m, Ulu Temburong, rainforest [various
dates, 1978-79] (Lt. Col. M.G. Allen); 2 BRUNEI:
400m, Tutong, Bedawan, rainforest, 11.12.79 (Lt. Col. M.G. Allen).
Geographical
range. Sumatra, Singapore, Borneo.
Habitat
preference. The commonest Bornean Ugia in recent surveys, viridior
is
a lowland forest species that has not been taken above 500m. During the Mulu
survey it was more common in wet heath forest, but is also abundant in
dipterocarp forest at the Danum Valley Field Centre in Sabah.
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