Category
page 1Passalidae

Passalidae
Passalidae is a family of beetles known variously as "bessbugs", "bess beetles", "betsy beetles", "betsy bugs", or "horned passalus beetles". Nearly all of the approximately 500 species are tropical; species found in North America are notable for their size, ranging from 20 to 43 mm, for having a single "horn" on the head, and for a form of social behavior unusual among beetles.

Proculus mniszechi
species of beetle
Horned Passalus Beetle
species of beetle
Passalus interruptus
species of beetle

Aulacocyclus edentulus
species of beetle
Veturius transversus
species of beetle
Odontotaenius floridanus
species of beetle
Aceraius grandis
species of beetle
Passalus elfriedae
species of beetle
Proculus burmeisteri
species of beetle
Spurius bicornis
species of beetle

Passalus
Passalus is a genus of beetles of the family Passalidae.
Paxillus leachi
species of beetle
Ceracupes arrowi
species of beetle

Cylindrocaulus patalis
species of beetle
Odontotaenius striatopunctatus
species of beetle
Passalus pugionifer
species of beetle
Verres hageni
species of beetle
Verres corticicola
species of beetle
Passalus interstitialis
species of beetle

Passalus latifrons
species of beetle

Passalus unicornis
species of beetle
Ptichopus angulatus
species of beetle
Petrejoides orizabae
species of beetle

Ogyges
genus of insects
Passalus punctatostriatus
species of beetle

Passalus affinis
species of beetle
Spasalus crenatus
species of beetle

Leptaulax bicolor
species of beetle
Passalus punctiger
species of beetle
Passalus jansoni
species of beetle
Passalus spiniger
species of beetle
Oileus rimator
species of beetle
Ogyges championi
species of insect
Heliscus tropicus
species of beetle
Pentalobus kaupi
species of insect
Didimus
Didimus is a genus of beetles of the family Passalidae.
Pentalobus barbatus
species of beetle
Chondrocephalus debilis
species of beetle
Passalus caelatus
species of beetle
Spurius
Spurius is a small genus of passalid beetles from Mesoamerica.
Chondrocephalus granulifrons
species of beetle
Paxillus pentaphylloides
species of beetle
Chondrocephalus
Chondrocephalus is a genus of bess beetles in the family Passalidae. There are about nine described species in Chondrocephalus.
Didimus parastictus
species of insect