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

Other beetle species - Canberra & Southern Tablelands

horned passalus - Odontotaenius disjunctus (Illiger)

Passalidae - Wikipedia

Bess Beetles of Kentucky - University of Kentucky Entomology

Bess Beetle - Odontotaenius disjunctus

Bess Beetles of Kentucky - University of Kentucky Entomology

Bess Beetle - The Australian Museum

The Blug: Bess Beetles - Scienceline

MObugs: Bess Beetles

MObugs: Bess Beetles