Plague Soldier Beetle

Chauliognathus lugubris, the plague soldier beetle, green soldier beetle or banana bug, is a species of soldier beetle (Cantharidae) native to Australia. It has a flattened body up to 15 millimetres (1 in) long, with a prominent yellow-orange stripe behind the black prothorax. The abdomen is yellow-orange but is mostly obscured by the metallic olive green elytra.

Plague soldier beetles are most common in spring and early summer, and have an adult lifespan of 2-3 months. They are most commonly found in the temperate region of south-east Australia, but are occasionally found in parts of the south-west of the continent.