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Evonima Walker

Type species: aperta Walker, Sundaland, Thailand, Taiwan.

Mimerastria Butler (type species mandschuriana Oberthür, Siberia); Poecilonola Hampson (type species plagiola Hampson, Sri Lanka) syn. n.

Inoue (1991) reviewed this genus when describing a new species from Taiwan. It is the first of the sequence of genera where the hindwing venation is reduced to a trifine condition, and was included by Hampson (1900) in his concept of Roeselia. The forewing venation is reduced by one in the radial sector except in mandschuriana, with the distal bifurcation posterior as in Melanographia. The forewings of most species (mandschuriana is an exception) are unusually colourful for the Nolinae, being marked in rufous orange and bluish tints or rich brown, and the male antennae are ciliated rather than bipectinate.

In the male abdomen the eighth tergite has moderate, well separated apodemes, but the sternite lacks them. The uncus is long, slender, setose, set on a similarly narrow tegumen. There are two long bands of thickening associated with the anal tube rather than the setose lobes seen in other nolines. The saccular shield is clearly present if shallow. The somewhat rectangular valves have a harpe running obliquely from the base of the valve costa to or just beyond the ventral margin at about the mid-point; it is apically blunt and bears a few small knobs ventrally towards the apex. The aedeagus is moderate, straight, with no obvious ornamentation. The male genitalia are rather uniform in included taxa, which are best diagnosed on facies features.

The female has short, rather triangular ovipositor lobes, a long, narrow ductus bursae and a rather pyriform bursa with a transverse, ridged signum amid general scobination.

The genus is the only one with a trifine hindwing where full larval head stacking has been recorded (see p. 14), in
mandschuriana (Sugi, 1987; illustration). The habit is seen in a possibly more vestigial form in Manoba argentalis Moore. The host plant noted by Sugi was Quercus (Fagaceae).

There are four species in Borneo. In addition to the species referred to above, the genus also includes
E. albifurca Hampson comb. n. (Philippines), E. elegans Inoue (Taiwan), E. minora van Eecke comb. n. (Sumatra), E. ochritincta Hampson comb. n. (Sri Lanka, Taiwan, Sumatra, Bali), E. plagiola Hampson comb. n. (Sri Lanka) and E. xanthoplaga Hampson comb. n. (N.E. Himalaya). Other species currently in Poecilonola (e.g. as listed by Poole (1989)) are probably not referable to Evonima, but there is no obvious alternative placement. More species from S.E. Asia are being studied by the Budapest group.

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