Dorysthenes buqueti, the sugarcane longhorn stemborer, is a species of longhorn beetles of the subfamily Prioniane.
Dorysthenes buqueti can reach a body length of about 38–41 millimetres (1.5–1.6 in) and a body width of about 14–16 millimetres (0.55–0.63 in). Colour may be brownish, reddish brown or shiny brown, with an elongate body and long filiform antennae. Adults are nocturnal. They usually emerge between April-June following rainfall. This species is considered a pest of sugarcane and bamboo. Larvae dig in cane stubble causing severe damage, leading to the death of plants.
This species can be found in India, Java, Laos, Malaysia, Thailand and Myanmar.