Bison-dung-weevil
Guides
Thecesternus humeralis
Thecesternus humeralis is a species of broad-nosed weevil in the family Curculionidae, described by Say in 1826. It is one of seven species in the genus Thecesternus, commonly known as "bison dung weevils" or "bison snout beetles" due to their historical association with seeking shelter under bison dung. The species is found in North America and shares the genus-wide traits of being small, flightless, nocturnal, and cryptic.
Thecesternus maculosus
bison dung weevil, bison snout beetle
Thecesternus maculosus is a species of broad-nosed weevil in the beetle family Curculionidae. It is one of seven species in the genus Thecesternus, collectively known as "bison dung weevils" or "bison snout beetles" for their historical association with bison dung as daytime shelter. The species is found in North America, particularly in the central and eastern United States and adjacent Canada. Like other members of its genus, it is nocturnal, flightless, and cryptic in appearance.