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Libytheidae (snout butterflies; subclass Pterygota, order Lepidoptera) Small family of butterflies in which the palps project from the front of the head like a ‘snout’. They have small, angular fore wings. The fore legs of males are reduced, but in females they are fully developed. They are closely related to the Lycaenidae, and sometimes treated as a subfamily of the Riodinidae. They are distributed world-wide.