The Episparis group of genera
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Episparis costistriga Walker 
Amphigonia costistriga Walker, 1864, J. Linn. Soc. (Zool.), 7: 184.
Episparis sora Swinhoe, 1889, Proc. zool. Soc. Lond., 1889: 415.
Episparis costistriga Walker; Holloway, 1976: 39.

Episparis costistriga

Diagnosis. This and the next species are similar in facies, but exprimens Walker has extreme mauve highlights, particularly at the margins of the wings, that define a diagnostic brown semicircle at the anterior half of the forewing margin and emphasise the smoother, less angular submarginal on the hindwing. The hindwing angle is much more produced in costristriga.

Geographical range. Himalaya, Sundaland, Balabac.

Habitat preference. The species is often abundant in lowland forest, including secondary forest and softwood plantations (Chey, 1994), and occurs more infrequently up 1930m.

Biology. Mitragyna (Rubiaceae) has been recorded as a larval host (Robinson et al., 2001).

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