Plaesius javanus

Plaesius javanus, the Jepson's beetle, is a species of clown beetles belonging to the family Histeridae.

Description
Plaesius javanus can reach a length of about 14 - 15 mm. These beetles have a glossy black body, with long and curved jaws and short antennae. Frontlegs are thin and expanded laterally. Elytra show 4–6 longitudinal grooves. Two abdominal rear segments are exposed.

These predatory histerid beetles have been introduced in some countries for the control of the banana weevil borer (Cosmopolites sordidus).

Distribution
This species is native to Southeastern Asia and Indonesia.