Xyleborus perforans, commonly known as island pinhole borer, is a species of weevil native in the Oriental region through to Australia but shows a cosmopolitan distribution due to introduction to many parts of the world.

[1] The native range of the species include: Bangladesh, Cambodia, China, Hong Kong, India, Andaman and Nicobar Islands, Indonesia (Java, Maluku Islands, Sulawesi, Sumatra), Laos, Malaysia, Myanmar, Nepal, Pakistan, Philippines, Singapore, Sri Lanka, Taiwan, Thailand, Vietnam, Papua New Guinea and Australia.

Frons convex, and the entire surface is minutely reticulate with faint, shallow punctures.

They show inbreeding, where the males usually mating with their sisters within the parental gallery system before dispersal.

It is particularly common in disturbed areas and flies mainly around dusk, and can be attracted to light in large numbers easily.

Both parent female and the larvae feed on the ambrosia fungus such as Ambrosiella which are growing on the walls of the galleries.