156 
TRICHOLEPIS; ZYGAENOSIA. By Dr. M. Draudt. 
taprobana. 
xanthome- 
las. 
nigrita. 
melanoxan- 
iha. 
ochracca. 
unicolor. 
rhodia. 
erubescens. 
xanthopera. 
1 uscbnargi- 
nalis. 
subhyalini- 
fascia. 
G. taprobana Hmps. is much smaller, of a darker ochreous yellow; the markings somewhat similar; 
the discal dot is double; the lines behind it are broken up into rows of dots. The thinly scaled hindwing shows 
a discal spot and traces of a transverse line, somewhat darkened at the margin. Ceylon. 
35. Genus: Tricliolepis Hmps. 
Distinguished from the closely allied following genus merely by the petioled course of the 2nd subcostal 
and 1st radial on the hindwing, which are coalescent in Zygaenosia ; the 2nd radial rises somewhat above the 
lower cell-angle. The genus contains small species with rather extended wings. 
T. xanthomelas Hmps. (17 c) has orange-yellow wings broadly bordered with black, also the costal 
margin of the forewing being black; the antennae are long-combed. From Tenimber. — subsp. nigrita Rothsch. 
from the Island of Koer is much more extensively black, on the hindwing the black at the proximal margin 
extends as far as the base. Specimens from Key are intermediate, rather nearer to the type of xanthomelas. 
T. melanoxantha Hmps. has the basal half of the forewing distally straightly cut off orange, the 
distal half being blackish-brown; at the base below the costa a short, black stripe. The hindwings are black, 
the costal margin towards the apex and the cell are orange. Head and thorax are orange, the abdomen above 
brown, beneath orange. Moluccas. 
T. ochracea Rothsch. Antennae shorter combed than in the preceding. Forewing ochreous-yellow, 
in the with a fine black costal and distal margin, in the $ it is merely indicated; hindwing with a broader 
black border and proximal margin. Dutch New Guinea, Humboldt Bay. 
T. unicolor Rothsch. has still shorter combed antennae; the shape of the wings somewhat like in 
xanthomelas. The wings are unicolorously olive-brown. This small species from Amboina is very much like 
Zygaenosia fumosa Rothsch. 
T. rhodia Rothsch. Forewing diaphanous brown, and with a large, irregularly rounded, orange-red 
spot in and below the cell-end. Head, thorax and under surface orange, abdomen above black. Ternate; 
Halmahera. 
T. erubescens Hmps. (17 c, d) has in the <$ shortly serrated antennae; the black wings are thinly 
covered with hairy scales, at the base oblicpiely cut off scarlet; the marginal area is faintly tinted scarlet; hind- 
wings black, in the basal half of the costal margin red. In the $ the scarlet is much more intense outside the 
oblique black border-line of the basal spot, and the fringes of both pair of wings are red; it exhibits besides 
an ochreous-yellow anal tuft. -—• Nilgiris. — The larva is thickly covered with short, brown hair. 
T. xanthopera Hmps. has pale brown forewings; the base, costa and marginal area are pale yellow; 
hindwings brownish, at the margin pale yellow. — Singapore. 
36. Genus: Zygaenosia Hmps. 
This genus, of which Hampson in his Catalogue of 1900 was only able to enumerate 2 species, has in 
the meantime increased to more than 20 species, beside a lot of local forms. They are almost throughout small, 
delicate animals with comparatively thin scaling and a rather extended shape of the wings. In the venation 
the species entirely resemble the genus Gymnasura, only distinguished by SC 2 and R 1 being coalescent on the 
hindwing. Hampson’s statement that on the forewing SC 6 rises nearer to the margin than SC 3 , is not correct, 
since quite the contrary is the case in most of the species; moreover the behaviour is different even within one 
and the same species. The proboscis is well developed, the palpi are extremely short; forehead and abdomen 
are roughly haired; $ antennae doubly combed; the posterior tibiae are without the middle spurs. Single species 
are very much alike and therefore not easy to distinguish. 
Z. fuscimarginalis Sivinh. (17 c is the South American Illice xanthospila Hmps.). Blackish-brown, 
with a large, round hyaline spot in the middle, not reaching the costa and proximal margin. Hindwing hyaline 
with a blackish-brown border. Dorey. 
Z. subhyalinifascia Rothsch. £ monotonously sooty black, a broad, almost hyaline, greyish-white • 
band of 5 mm width crosses the forewing about a quarter away from the base. The costal area of the hindwing 
is greyish-white. Length of forewings: 14 1 /., mm. Snow Mountains in Dutch New Guinea, up to altitudes 
of 3500 ft., October to December. 
