Black Bess Beetle - Mastachilus sp.

Study insects and spiders in backyard, Brisbane, Queensland, Australia. Discussion of insects and spiders evolution.

Other beetle species - Canberra & Southern Tablelands

Black Bess Beetle

horned passalus - Odontotaenius disjunctus (Illiger)

Bess Beetles - FAMILY Passalidae, Aulacocyclus sp. (? A. edentulus)

Recyclers in the Circle of Life: Bess beetles, Odontotaenius disjunctus — Bug of the Week

Horned Passalus (Bess) Beetle – Field Station

Bess Beetles of Kentucky - University of Kentucky Entomology

Bess Beetle - The Australian Museum

ipernity: Passalid species (Bess Beetle) - by Wimm/Vic

Beetle (Coleoptera) species - Canberra & Southern Tablelands

Bess Beetle - The Australian Museum

A passalid beetle (Pharochilus) and detail of the boxed region. Arrows