Chaetosopus is a genus in the longhorn beetle family Cerambycidae. There are at least three described species in Chaetosopus, found in Brazil.

Species These three species belong to the genus Chaetosopus: Chaetosopus contiguus Napp & Martins, 1988 Chaetosopus infalsatus Napp & Martins, 1988 Chaetosopus violaceus (Martins, 1973)

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