The Horned Passalus, or bess beetle, is a large, shiny black beetle that lives in highly organized family groups inside rotting logs, with parents caring for their larvae — an unusual level of social behavior for beetles. Both adults and larvae communicate with squeaking sounds produced by rubbing body parts together. Adults partially pre-digest wood for their larvae to consume.
Habitat
Deciduous forests with large rotting logs
Diet
Adults and larvae: rotting hardwood logs
How common
Common
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