Arctornis calcariphallus sp.
15-16mm. The mottled reflectivity of the forewing of
this and the next species is much as in the flavescens group, but there
is no grey shading in the spaces at the distal margins of the wings. There is a
rufous brown bar on the frons between the antennal bases that diffuses away
ventrally, and the palps are white below, grading rufous dorsally and towards
the apex. The legs are faintly tinged rufous. The genitalia of the two species
differ markedly from those of the flavescens group, having the uncus
broad, square-shouldered, with a central lacuna, and valve processes limited to
a weak, short, broad, harpe. The aedeagus has large and small lateral spurs, the
former in calcariphallus outstanding and evenly curved, and the latter
Ulu Temburong Expedition,
1978, BRUNEI: Base Camp, 300m, m.v. light, 10.x.1978, (T.W. Harman) BM
lymantriid slide 2115.
Seria, mangrove and freshwater swamp, 25.5.1979 (Lt. Col.
M.G. Allen); 1as above but 3m, secondary and coastal
veg, 12 Feb 82; 1 BRUNEI: swamp forest,
Seria, 20m, 11.ii.1982 (T.W. Harman); 12 SARAWAK:
Gunung Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.) Sites
8, 11, 13 (G. Mulu hill dipterocarp forest), 14, 15 (G. Mulu lower montane
forest at 1000m), 16 (lowland alluvial forest), 20 (kerangas forest) and 23
(forest on limestone at 250m), slides 1559, 1618.
Geographical range. Borneo.
Habitat preference. The species is frequent in a variety of lowland
forest types including coastal swamp and mangrove forest. It has also been taken
at 1000m in lower montane forest.
to Contents page