124 
TROPACME; DIDUGA. By Dr. A. Seitz. 
schistacea. 
rnurlna. 
schisiaceo- 
alba. 
son illima. 
orbiferana. 
micromma- 
ta. 
dulcicula. 
cupreimar- 
go. 
H. schistacea Rothsch. In the <$ the antennae, head‘and thorax are blnish slate-coloured; abdomen 
dull buff. Forewing bluish slate-coloured; 3 antemedian spots and one median spot, a subapicoterminal curved 
line, extending from the costa V 3 before the apex to vein 1, and the basal two thirds of the costa are black. 
Hindwings leather-coloured white. Length of forewings: 12 mm. Oetakwa River, New Guinea, at an altitude 
of 3500 ft., October till November. 
H. murina Rothscli. with light brown antennae, head and thorax drab, abdomen whitish-grey. 
Forewings drab, an apicoterminal band darker, median spot black; hindwings drab. Length of forewings: 
10,5 to 12 mm. Cumusi River, New Guinea, June to August. 
H. schistaceoalba Rothsch. Head, antennae and thorax of the $ brownish slate-coloured; abdomen 
creamy white, anal tuft and valves whitish-grey. Forewings milky-wlrite; base, costal-marginal area, apex 
and marginal band as far as vein 1 slate-coloured, with a brownish hue over it. Hindwings milky-white. Length 
of forewings: 11,5 mm. Cumusi River, New Guinea. 
H. simillima Rothsch. The $ resembles orbiferana (13 d), but it is larger. Antennae brown, head 
and thorax violet slate-coloured; abdomen light creamy buff. Forewing violet slate-coloured, disc wood-coloured 
brown, with a violet slate-coloured hue, a spot on the transverse vein and a large one above vein 1 orange- 
yellow, 2 curved zig-zag lines black, extending from the costa as far as beyond the middle of the border above 
the anal angle. Hinclwing light creamy buff. Length of forewings: 13 mm. Haidana, Collingwood Bay and 
Cumusi River in New Guinea, April and July. 
H. orbiferana Wkr. (= rotundata Snell.) (13 d). Forewings sooty grey, at the border and proximal 
margin darker, at the base and in the disc lighter; behind the cell-end, often also above the proximal margin 
a minute dark spot in a light halo; hindwings whitish. Distributed from Sikkim and Bhutan to Ceylon and 
Borneo. 
H. micrommata Tmr. from North Australia is smaller, the forewing more brown and at the costa 
darker; in the middle of the wing a dark line from the costa obliquely to the median, then straight, and on 
the submedian fold slightly angled inwardly; at the cell-end a small orange spot; a dark antemarginal line 
obliquely cuts off the apex; hindwings light ochreous. Port Darwin. 
H. dulcicula Sivinh. (13 d) is allied to this genus and to the preceding, but distinguished by the straighter 
course of the subcostal veins, the 4th of which is petioled with the 3rd, and the fifth with the upper radial, 
and according to Hampson, forming for this reason a separate genus: Cyclosiellci Hmps. Forewings purple 
brown with a straw-coloured arcuate stripe at the costal and distal margins, the hindwings with a yellow 
margin. India as far as Ceylon and Indo-China. 
6. Genus: Tropacme Hmps. 
This genus only contains one very small species from northern Indo-China; the body is very frail, 
antennae of the combed, forewings very broad, shield-shaped, with a very bulgy border, the apex bent over 
downwards; in the forewing all the veins are separate except 8 and 9, which are petioled, the rather long footstalk 
rising before the upper cell-angle. — The name is derived from the apical part of the forewing being peculiarly 
turned over upward. The cell of the forewing is much shorter and broader, the subcostal veins straight, the 
3rd and 4th petioled. Indo-China. 
T. cupreimargo Hmps. is as large as Hemonia dulcicula, ochreous-yellow, dusted with dark, forewing 
with an oblique band extending from the vertex of the costa to the proximal margin near the base. Behind 
this band the dark dusting is more intense, and 2 above convergent small stripes run from the proximal margin 
as far as below the cell-end. Immediately recognizable by the apex of the forewing being turned upward. Hind¬ 
wings coloured like the forewings with yellow fringes. 
7. Genus: l>l«lug;a Moore 
About 8 species form this genus which might as well be divided into several. Some specious differences 
in the veins are attributable to the deviation in the shape of the wings so often occurring in the Lithosiids. 
Very much deviating is asperea which was therefore justly raised to a genus of its own ( Conosia ) by Hampsok. 
This species has very long, strap-like wings, like a small Lithosia, as which it was therefore also described. The 
shape of the forewings of the other species is more oval; in pectinifer with a sharper anal angle, in the others 
more indistinct; the subcostal veins very straight, often petioled by twos, in annulatci all parallel, and 4 forming 
with 5 a long-stalked fork. The antennae are sometimes rather long-combed (subg. Diduga ), sometimes short- 
combed (subg. Androstigma). The latter name refers to a very conspicuous scent-organ near the transverse 
