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Risoba
samarinda
sp. n.
Risoba samarinda
 (holotype) |
Risoba samarinda
 (paratype) |
18-19mm, probable
18mm. The male has the forewings a darker green than in the previous two
species, the white markings more clearly delineated, with a more reticulate
submarginal zone, the submarginal fascia being crossed with white delineation of
the veins (also seen in the medial area), most broadly just posterior to the
apical brown patch. This broader bar is seen also in the probable females
(excluded, however, from the type series), and these have the apical brown patch
similar to that of the males. The medial area of the wing is a distinctly paler
green, and the postmedial, though more strongly represented as a pale line than
in repugnans, is nevertheless more obscure and more curved. In the male
genitalia the aedeagus vesica is relatively small, with six cornuti, bluntly
triangular, set in a row along the distal part. The valve lacks a costal
process. The more distal ventral process is a lobe rather than a spine and set
more towards the centre.
Holotype
.
S.E. BORNEO: Samarinda, x.1938 (M.E. Walsh), BM noctuid slide 16683.
Paratypes:
3
as holotype; 1
B.N. BORNEO: Kretam, 22.ix-7.x.1950 (J.D.H. Hedley).
Other material:
from the type locality, inland from Pontianak in Kalimantan and from the Danum
Valley Field Centre in Sabah.
Geographical range. Borneo, Sumatra; Sulawesi (slide 16689).
Habitat preference. All material is from the lowlands, mostly from disturbed
areas with secondary forest.
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