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Lophoptera longipennis Moore comb. n.  
Sadarsa longipennis
Moore, 1882, Descr. new Indian Lepid. Colln. Atkinson, p. 165.

Lophoptera longipennis

Lophoptera longipennis

The female is much as in L. tenuis except for the less hyaline hindwing and almost vestigial post-ostial invagination mentioned above. The extremely produced forewings of the male render it unmistakable.

Taxonomic note. The equal development of appendix bursae and bursa copulatrix and indications of a vestigial post-ostial invagination in the female genitalia, as well as facies similarities with L. tenuis, indicate that this is a somewhat divergent Lophoptera and therefore the genus Sadarsa Moore should be placed in synonymy with that genus, syn. n. The genitalia of both sexes are somewhat different from those of tenuis so the species is placed in a distinct subgroup.

Females of longipennis from outside Borneo are much less similar to tenuis, having faint pale brown patches and fasciae.

Geographical range. N.E. Himalaya, Taiwan, Sumatra, Java, Borneo.

Habitat preference. The species is montane in Sundaland, being recorded from localities at around 1500m on G. Kinabalu in Borneo.

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