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Xanthanomis Hampson
Type
species: fuscifrons Walker,
Borneo.
All
species have a forewing with a slightly falcate, biangular distal margin as in
the Gonopterini. The hindwing also is slightly angled at the centre of the
margin. Unlike the Gonopterini, the forewing pattern is continued on the
hindwing and is distinguished by straight, double postmedials. The fawn to
yellow ground colour is usually suffused more purplish distal to these fasciae,
and there are paler submarginal lunules anteriorly on the forewing and tornally
on the hindwing within this zone. The underside is uniform.
The male
abdomen has the eighth tergite narrowing anteriorly to give rise to long,
somewhat pincer-like apodemes. The sternite is twice as broad, with curved
lateral arms arising from a deep central crescent that has three short apodemes
to its concave side. In the genitalia the uncus is apically bulbous with a spur,
and setose. The valves are narrow, with an ampullate process subbasally. The
juxta is flask-shaped. The vinculum with a saccus is more pronounced than the
tegumen. The aedeagus vesica has bands of sclerotisation basally and several
short diverticula distally.
In the
female genitalia the ductus is short, sclerotised, the bursa large, pyriform,
corrugated and combining an elongate band of sclerotisation with a distal spur
near a small, scobinate signum.
The
genus ranges from Sundaland east to New Guinea and Australia.
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