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Passalidae Leach, 1815Bess Beetles
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Kingdom: Animalia
Class: Insecta
Order: Coleoptera
Superfamily: Scarabaeoidea
Family: Passalidae
Class: Insecta
Order: Coleoptera
Superfamily: Scarabaeoidea
Family: Passalidae
Passalidae is a family of beetles known variously as "bessbugs" "bess beetles", "betsy beetles" or "horned passalus beetles". Nearly all of the 500-odd species are tropical; species found in North America are notable for their size, ranging from 20–43 mm, for having a single "horn" on the head, and for a form of social behavior unusual among beetles. Wikipedia
Subfamily: Passalinae
Genera: Aceraius
Aceraius grandis
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