Cyllene inopinatus is a species of beetle belonging to the family Cerambycidae. It was first described in 2010 and is known for its distinctive appearance and behavior. This beetle is primarily found in South America, where it inhabits various forested areas. The larvae of Cyllene inopinatus typically develop in decaying wood, playing a role in the ecosystem by helping to decompose organic matter. Adult beetles are often seen on trees, where they feed on bark and foliage. Their unique characteristics contribute to the biodiversity of their habitats.