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The sexes are similar except for the sex brands. The upper side is dark brown and lighter towards the margins. The sub-marginal spots vary greatly, although the spots on the inner band are always larger than those on the outer band of the hindwing. The background color of its underside is uniform and the sub-marginal spots are more distinct than those seen on the upper surface. Usually, the spots at the forewing apex are arranged in an arc. Both wings have a white spot on each cell. The male has a sex brand on the upper surface of its forewing in interspace 1b, resembling a single light-colored narrow streak on both sides of the wing. Females also have this demarcation on the underside, even though they do not actually have a sex brand. Like other Danaids, the Common Crow’s flight is moderately fast and males congregate at plants that provide toxins. This is a migratory species. This species is numerous in the dry zone and depends on open vegetation to feed and search for mates. They also gather in large numbers in gloomy forests during dry spells in the dry zone.
I'm not 100% sure if this is Common Crow or Double-branded crow. Help on how to distinguish these two is highly appreciated!
Spotted on Sep 6, 2021
Submitted on Sep 20, 2021