Black Bess Beetle - Mastachilus sp.

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

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

Passalid Beetle

Bess Beetle - The Australian Museum

Other beetle species - Canberra & Southern Tablelands

Black Bess Beetle

B Beetle or Horned Passalus NC State Extension Publications

Introducing the Bess Beetle - The Infinite Spider

Bess Beetles of Kentucky - University of Kentucky Entomology

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

Ecology and Conservation of Passalidae

Bess Beetles of Kentucky - University of Kentucky Entomology

Bess Beetles of Kentucky - University of Kentucky Entomology