Coleoptera Gallery

Confused flour beetles (Tribolium confusum)

Confused flour beetles (Tribolium confusum), infesting a store of grain. They are a serious pest of grain stored in warehouses, food stores, silos and home larders, not only for their feeding but because of their faecal pellets, stinking secretions and the fact that they encourage mould to grow. Japan

Elephant beetle (Megasoma elephas)

Elephant beetle (Megasoma elephas) fighting a Hercules beetle (Dynastes hercules), on the right, both males. The Elephant beetle can reach 12 cm in length and the Hercules beetle occasionally 17 cm. The Hercules beetle is unusual in having a dense coat of fine hair on its elytra. Costa Rica

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Asian bombardier beetle (Pheropsophus jessoensis)

Asian bombardier beetle (Pheropsophus jessoensis), pressed by a human's finger, spraying hot gas in bursts that make a popping noise. The spray is a reaction between hydroquinone and hydrogen peroxide stored in two reservoirs in the beetle abdomen. Heat from the reaction brings the mixture almost to boiling point. Nagasaki Prefecture, Japan