A belly full of wriggling worms makes wood beetles better recyclers

Common decomposers infested with benign nematodes eat more and so release more nutrients

Horned passalus beetles

EATING FOR MANY MORE THAN ONE  Horned passalus beetles, found in the eastern United States, chew up more rotting wood if they harbor wormlike nematodes (inset) inside their abdomens.

A.K. Davis

Having hundreds of roundworms living inside your abdomen may seem like a bad thing.