Copperheads, Moccasins, and Cottonmouths

Agkistrodon

Field notes

Agkistrodon is a genus of pit vipers commonly known as American moccasins. The genus is endemic to North America, ranging from the northeastern United States to northern Costa Rica. Eight species are recognized as being valid, all of them monotypic and closely related. Common names include: cottonmouths, copperheads, and cantils.

Children

Eastern Copperhead native
Northern Cottonmouth native
Florida Cottonmouth native
Broad-banded Copperhead native
Florida × Northern Cottonmouth
Mexican Cantil
Taylor's Cantil
Southern Cantil

Range

United States

Greener is more native, amber more introduced; paler is less certain. How this was decided

Most observed native copperheads, moccasins, and cottonmouths All

Native to the US, by observations.

Eastern Copperhead Agkistrodon contortrix 27,786 observations
Northern Cottonmouth Agkistrodon piscivorus 24,510 observations
Florida Cottonmouth Agkistrodon conanti 8,008 observations
Broad-banded Copperhead Agkistrodon laticinctus 5,797 observations