Miscellaneous Genera VI
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Ectogonia Hampson

Type species: viola Hampson, Sikkim.

Camptochilus Hampson (type species viola), praeocc.

Typically, this genus has extremely long, forward-directed labial palps, about three times the length of the head, though a similar feature is also seen in Parilyrgis longirostris Hampson (Bali, Singapore). The type species is known only from the holotype female, which is much larger than the Bornean species or E. butleri Leech (Japan, Taiwan). The forewings are more elongate than in Ilyrgis with similar, if fainter, fasciation to the wings and angling to the hindwing margin. The forewing costa is diagnostically sinuous, being distinctly bowed at one third (this feature is weak in butleri).

The male abdomen (butleri and curvipalpata sp. n.) has the eighth segment basally modified with a thin, marginal strip of greater sclerotisation, but otherwise the sclerites are simple. The valves are simple, strongly tapering in butleri, much less so and shorter in curvipalpata, with a triangular process centrally on the costa. The aedeagus vesica is large, more or less spherical, with spining or a cornutus subbasally; in curvipalpata there is also more general scobination.

The female (
butleri) has the seventh sternite reduced, flanked on each side posteriorly by pockets that presumably accommodate the long, tapered valves of the male in copulation. The ostium is situated relatively posteriorly within the eighth segment. The ductus is long, expanding over the distal third into the bursa. It is corrugated over this portion; a narrow strip of this corrugation extends basally to the ostium. The bursa is twice as long as broad, and has a slight constriction at two thirds, being scobinate on both sides of this but more intensely so where it occurs. The ductus seminalis arises laterally from the larger, more basal section of the bursa.

Ectogonia butleri Leech has been recorded feeding as a larva on Castanopsis (Fagaceae) and Deutzia (Hydrangeaceae) in Japan by Miyata (1983) and reported by Sugi (1987) to prefer dried leaves (a herminiine characteristic). The larva was illustrated by Sugi and is a finely speckled brown with a fine pale yellow dorsolateral line on each side. There is a prominent pair of tubercles on A8.

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