It is found in Sri Lanka,[2] Australia, Bangladesh, Cambodia, China, Fiji, Guam, Hong Kong, India, Indonesia, Japan, Laos, Malaysia, Mariana Islands, Myanmar, Nepal, New Guinea (Island); Papua New Guinea, Pakistan, Philippines, Thailand, Vietnam, Ryukyu, Irian Jaya, and Maluku.

[3][4] Female with brownish antenna, maxillary palpus, clypeus, and proboscis with violet sheen.

Wings with narrow dark scales of purple reflections.

[5] Niles et al 1965 finds C. crassipes to be a natural vector of Plasmodium gallinaceum.

[6] It is a secondary vector of Brugian filariasis,[7] a host to Cardofilaria nilesi.