Abundance: 0.00 to 3.12% (median 0.44%)

Latitudinal range: 29.2° to 42.7°

Habitats: (2), desert/xeric shrubland (1), temperate broadleaf/mixed forest (5), temperate savanna (2)

Found in 10 samples

Mexico: Mexico Highway 16

United States: Savannah River Site, Pine Bush, Fort Riley Military Reservation, Ellenton Bay, Needle's Eye, Curl Creek, Griffith League Ranch, Scovill (Holocene), Meyer Cave (Holocene)

See also Heterodon nasicus, Heterodon platirhinos, Heterodon simus