Copperheads, Cottonmouths, and Cantils
Agkistrodon
Agkistrodon is a genus of venomous pit vipers found in North America from the United States south to northern Costa Rica. Six species are currently recognized, all of them polytypic and closely related. Common names include: cottonmouths, copperheads, and cantils. Some varieties are known as "moccasins" or "moccasin snakes", such as Agkistrodon piscivorus, the water moccasin.
9 branches of this genus, most-observed first · about 8 known species
Eastern Copperhead
speciesAgkistrodon contortrix
Northern Cottonmouth
speciesAgkistrodon piscivorus
Florida Cottonmouth
speciesAgkistrodon conanti
Broad-banded Copperhead
speciesAgkistrodon laticinctus
Florida × Northern Cottonmouth
hybridAgkistrodon conanti × piscivorus
Mexican Cantil
speciesAgkistrodon bilineatus
Yucatecan Cantil
speciesAgkistrodon russeolus
Taylor's Cantil
speciesAgkistrodon taylori
Southern Cantil
speciesAgkistrodon howardgloydi
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Agkistrodon in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 30668.