Chalcosiinae is a subfamily of the Zygaenidae, containing many species, mostly little known. Prominent sexual dimorphism, bright aposematic coloration and mimicry complexes are widespread.

Several members of this subfamily remain relatively obscure, only being known from a single specimen, as in the case of the genus Isocrambia. Some others are known from specimens of a specific sex, such as Cyanidia and Allocaprima.

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