| bolivia | santa cruz department | crotalus durissus | species | 1 | 0 |
| brazil | | crotalus durissus collilineatus | subspecies | 1 | 0 |
| brazil | amazonas | crotalus simus | species | 0 | 1 |
| brazil | mato grosso | crotalus horridus | species | 0 | 1 |
| brazil | mato grosso do sul | crotalus horridus | species | 0 | 1 |
| brazil | minas gerais | crotalus durissus | species | 0 | 3 |
| brazil | minas gerais | crotalus durissus terrificus | subspecies | 21 | 2 |
| brazil | paraiba | crotalus durissus | species | 0 | 1 |
| brazil | parana | crotalus durissus terrificus | subspecies | 19 | 0 |
| brazil | rio de janeiro | crotalus horridus | species | 0 | 1 |
| brazil | roraima | crotalus durissus | species | 0 | 1 |
| brazil | roraima | crotalus durissus ruruima | subspecies | 0 | 1 |
| brazil | sao paulo | crotalus durissus | species | 7 | 7 |
| brazil | sao paulo | crotalus durissus collilineatus | subspecies | 6 | 0 |
| brazil | sao paulo | crotalus durissus ruruima | subspecies | 1 | 0 |
| brazil | sao paulo | crotalus durissus terrificus | subspecies | 16 | 5 |
| canada | | crotalus cerastes | species | 1 | 0 |
| canada | | crotalus lepidus | species | 1 | 0 |
| colombia | antioquia department | crotalus durissus | species | 0 | 1 |
| colombia | antioquia department | crotalus durissus terrificus | subspecies | 0 | 1 |
| colombia | atlantico department | crotalus durissus | species | 0 | 1 |
| colombia | atlantico department | crotalus durissus terrificus | subspecies | 0 | 1 |
| colombia | choco department | crotalus durissus | species | 0 | 1 |
| colombia | choco department | crotalus durissus terrificus | subspecies | 0 | 1 |
| colombia | huila department | crotalus durissus | species | 0 | 1 |
| colombia | huila department | crotalus durissus terrificus | subspecies | 0 | 1 |
| colombia | meta department | crotalus durissus | species | 0 | 1 |
| colombia | meta department | crotalus durissus terrificus | subspecies | 0 | 1 |
| colombia | tolima department | crotalus durissus | species | 0 | 1 |
| colombia | tolima department | crotalus durissus terrificus | subspecies | 0 | 1 |
| costa rica | | crotalus durissus | species | 1 | 0 |
| costa rica | | crotalus simus | species | 54 | 0 |
| guatemala | guatemala department | crotalus durissus | species | 0 | 1 |
| mexico | | crotalus basiliscus | species | 10 | 0 |
| mexico | | crotalus culminatus | species | 13 | 0 |
| mexico | | crotalus polystictus | species | 16 | 0 |
| mexico | | crotalus ravus | species | 91 | 0 |
| mexico | | crotalus ravus brunneus | subspecies | 5 | 0 |
| mexico | | crotalus ravus exiguus | subspecies | 1 | 0 |
| mexico | | crotalus ravus ravus | subspecies | 40 | 0 |
| mexico | | crotalus scutulatus | species | 44 | 0 |
| mexico | | crotalus scutulatus scutulatus | subspecies | 1 | 0 |
| mexico | | crotalus simus | species | 447 | 0 |
| mexico | | crotalus totonacus | species | 28 | 0 |
| mexico | | crotalus transversus | species | 3 | 0 |
| mexico | | crotalus triseriatus triseriatus | subspecies | 3 | 0 |
| mexico | | crotalus tzabcan | species | 29 | 0 |
| mexico | aguascalientes | crotalus aquilus | species | 3 | 0 |
| mexico | aguascalientes | crotalus lepidus klauberi | subspecies | 6 | 0 |
| mexico | aguascalientes | crotalus lepidus x aquilus | species | 28 | 0 |
| mexico | baja california | crotalus atrox | species | 5 | 0 |
| mexico | baja california | crotalus mitchellii | species | 0 | 2 |
| mexico | baja california | crotalus mitchellii angelensis | subspecies | 2 | 0 |
| mexico | baja california | crotalus mitchellii pyrrhus | subspecies | 24 | 1 |
| mexico | baja california | crotalus ruber | species | 0 | 1 |
| mexico | baja california | crotalus ruber exsul | subspecies | 2 | 0 |
| mexico | baja california | crotalus tigris | species | 0 | 1 |
| mexico | baja california | crotalus tortugensis | species | 2 | 0 |
| mexico | baja california sur | crotalus atrox | species | 6 | 0 |
| mexico | baja california sur | crotalus catalinensis | species | 4 | 0 |
| mexico | baja california sur | crotalus enyo | species | 4 | 0 |
| mexico | baja california sur | crotalus mitchellii | species | 8 | 0 |
| mexico | baja california sur | crotalus tortugensis | species | 3 | 0 |
| mexico | chihuahua | crotalus lepidus | species | 1 | 0 |
| mexico | chihuahua | crotalus lepidus klauberi | subspecies | 26 | 0 |
| mexico | chihuahua | crotalus molossus | species | 1 | 0 |
| mexico | chihuahua | crotalus pricei | species | 2 | 0 |
| mexico | chihuahua | crotalus pricei pricei | subspecies | 33 | 0 |
| mexico | coahuila zaragoza | crotalus lepidus lepidus | subspecies | 3 | 0 |
| mexico | coahuila zaragoza | crotalus lepidus morulus | subspecies | 9 | 0 |
| mexico | coahuila zaragoza | crotalus pricei miquihuanus | subspecies | 9 | 0 |
| mexico | colima | crotalus armstrongi | species | 3 | 0 |
| mexico | colima | crotalus lannomi | species | 10 | 0 |
| mexico | durango | crotalus lepidus | species | 1 | 0 |
| mexico | durango | crotalus lepidus klauberi | subspecies | 15 | 0 |
| mexico | durango | crotalus lepidus maculosus | subspecies | 6 | 0 |
| mexico | durango | crotalus molossus | species | 1 | 0 |
| mexico | durango | crotalus pricei pricei | subspecies | 35 | 0 |
| mexico | federal district | crotalus polystictus | species | 5 | 0 |
| mexico | federal district | crotalus transversus | species | 3 | 0 |
| mexico | federal district | crotalus triseriatus | species | 15 | 0 |
| mexico | federal district | crotalus triseriatus triseriatus | subspecies | 7 | 0 |
| mexico | guanajuato | crotalus aquilus | species | 6 | 0 |
| mexico | guerrero | crotalus ericsmithi | species | 6 | 0 |
| mexico | guerrero | crotalus intermedius omiltemanus | subspecies | 9 | 0 |
| mexico | guerrero | crotalus ravus exiguus | subspecies | 9 | 0 |
| mexico | hidalgo | crotalus aquilus | species | 20 | 0 |
| mexico | jalisco | crotalus armstrongi | species | 15 | 0 |
| mexico | jalisco | crotalus lepidus klauberi | subspecies | 12 | 0 |
| mexico | jalisco | crotalus pricei pricei | subspecies | 5 | 0 |
| mexico | jalisco | crotalus pusillus | species | 3 | 0 |
| mexico | mexico | crotalus aquilus | species | 6 | 0 |
| mexico | mexico | crotalus ravus ravus | subspecies | 5 | 0 |
| mexico | mexico | crotalus sp. aal-2011 | species | 6 | 0 |
| mexico | mexico | crotalus triseriatus triseriatus | subspecies | 10 | 0 |
| mexico | michoacan ocampo | crotalus aquilus | species | 6 | 0 |
| mexico | michoacan ocampo | crotalus armstrongi | species | 22 | 0 |
| mexico | michoacan ocampo | crotalus pusillus | species | 17 | 0 |
| mexico | michoacan ocampo | crotalus sp. aal-2011 | species | 6 | 0 |
| mexico | michoacan ocampo | crotalus tancitarensis | species | 6 | 0 |
| mexico | michoacan ocampo | crotalus triseriatus triseriatus | subspecies | 8 | 0 |
| mexico | morelos | crotalus transversus | species | 6 | 0 |
| mexico | nayarit | crotalus basiliscus | species | 5 | 0 |
| mexico | nayarit | crotalus lepidus maculosus | subspecies | 2 | 0 |
| mexico | nuevo leon | crotalus lepidus morulus | subspecies | 20 | 0 |
| mexico | nuevo leon | crotalus pricei | species | 5 | 0 |
| mexico | nuevo leon | crotalus pricei miquihuanus | subspecies | 11 | 0 |
| mexico | oaxaca | crotalus intermedius gloydi | subspecies | 4 | 0 |
| mexico | oaxaca | crotalus ravus brunneus | subspecies | 6 | 0 |
| mexico | puebla | crotalus intermedius intermedius | subspecies | 10 | 0 |
| mexico | puebla | crotalus ravus ravus | subspecies | 13 | 0 |
| mexico | puebla | crotalus triseriatus triseriatus | subspecies | 15 | 0 |
| mexico | queretaro arteaga | crotalus aquilus | species | 52 | 0 |
| mexico | san luis potosi | crotalus aquilus | species | 13 | 0 |
| mexico | san luis potosi | crotalus atrox | species | 2 | 0 |
| mexico | san luis potosi | crotalus cerastes | species | 1 | 0 |
| mexico | san luis potosi | crotalus lepidus x aquilus | species | 6 | 0 |
| mexico | sinaloa | crotalus lepidus maculosus | subspecies | 3 | 0 |
| mexico | sinaloa | crotalus stejnegeri | species | 10 | 0 |
| mexico | sonora | crotalus atrox | species | 2 | 1 |
| mexico | sonora | crotalus lepidus klauberi | subspecies | 3 | 0 |
| mexico | sonora | crotalus molossus | species | 1 | 0 |
| mexico | sonora | crotalus tigris | species | 9 | 0 |
| mexico | sonora | crotalus willardi | species | 16 | 0 |
| mexico | tamaulipas | crotalus lepidus morulus | subspecies | 18 | 0 |
| mexico | tamaulipas | crotalus pricei | species | 1 | 0 |
| mexico | tamaulipas | crotalus pricei miquihuanus | subspecies | 6 | 0 |
| mexico | tlaxcala | crotalus ravus ravus | subspecies | 3 | 0 |
| mexico | veracruz-llave | crotalus atrox | species | 1 | 0 |
| mexico | veracruz-llave | crotalus intermedius | species | 5 | 0 |
| mexico | veracruz-llave | crotalus molossus | species | 6 | 0 |
| mexico | veracruz-llave | crotalus ravus ravus | subspecies | 4 | 0 |
| mexico | veracruz-llave | crotalus simus | species | 0 | 1 |
| mexico | veracruz-llave | crotalus triseriatus triseriatus | subspecies | 6 | 0 |
| mexico | zacatecas | crotalus atrox | species | 2 | 0 |
| mexico | zacatecas | crotalus lepidus klauberi | subspecies | 6 | 0 |
| paraguay | | crotalus durissus | species | 2 | 0 |
| peru | amazonas region | crotalus simus | species | 0 | 1 |
| thailand | | crotalus oreganus helleri | subspecies | 4 | 0 |
| united kingdom | england | crotalus atrox | species | 0 | 1 |
| united states | | crotalus adamanteus | species | 1 | 0 |
| united states | | crotalus atrox | species | 20 | 0 |
| united states | | crotalus cerberus | species | 1 | 0 |
| united states | | crotalus horridus | species | 1 | 0 |
| united states | | crotalus oreganus | species | 1 | 0 |
| united states | | crotalus scutulatus | species | 54 | 0 |
| united states | | crotalus viridis | species | 1 | 0 |
| united states | arizona | crotalus atrox | species | 141 | 3 |
| united states | arizona | crotalus cerastes | species | 1 | 0 |
| united states | arizona | crotalus lepidus | species | 0 | 1 |
| united states | arizona | crotalus lepidus klauberi | subspecies | 9 | 1 |
| united states | arizona | crotalus mitchellii pyrrhus | subspecies | 8 | 0 |
| united states | arizona | crotalus molossus | species | 4 | 0 |
| united states | arizona | crotalus pricei | species | 4 | 0 |
| united states | arizona | crotalus pricei pricei | subspecies | 22 | 0 |
| united states | arizona | crotalus scutulatus | species | 397 | 7 |
| united states | arizona | crotalus scutulatus scutulatus | subspecies | 2 | 6 |
| united states | arizona | crotalus tigris | species | 62318 | 0 |
| united states | arizona | crotalus viridis | species | 0 | 2 |
| united states | arizona | crotalus viridis viridis | subspecies | 0 | 2 |
| united states | arkansas | crotalus atrox | species | 0 | 1 |
| united states | arkansas | crotalus horridus | species | 6 | 1 |
| united states | california | crotalus atrox | species | 12 | 1 |
| united states | california | crotalus cerastes | species | 8 | 0 |
| united states | california | crotalus lepidus | species | 0 | 1 |
| united states | california | crotalus mitchellii | species | 9 | 1 |
| united states | california | crotalus mitchellii pyrrhus | subspecies | 10 | 1 |
| united states | california | crotalus molossus | species | 1 | 0 |
| united states | california | crotalus oreganus | species | 1 | 2 |
| united states | california | crotalus oreganus helleri | subspecies | 5 | 5 |
| united states | california | crotalus oreganus oreganus | subspecies | 0 | 2 |
| united states | california | crotalus ruber | species | 12 | 3 |
| united states | california | crotalus scutulatus | species | 7 | 3 |
| united states | california | crotalus scutulatus scutulatus | subspecies | 0 | 2 |
| united states | california | crotalus stephensi | species | 1 | 0 |
| united states | california | crotalus tigris | species | 0 | 1 |
| united states | california | crotalus tortugensis | species | 0 | 1 |
| united states | california | crotalus viridis | species | 8 | 1 |
| united states | colorado | crotalus viridis | species | 0 | 4 |
| united states | colorado | crotalus viridis viridis | subspecies | 0 | 4 |
| united states | florida | crotalus adamanteus | species | 223 | 0 |
| united states | florida | crotalus horridus | species | 2 | 1 |
| united states | georgia | crotalus adamanteus | species | 29 | 0 |
| united states | georgia | crotalus horridus | species | 2 | 0 |
| united states | massachusetts | crotalus horridus | species | 0 | 1 |
| united states | nevada | crotalus mitchellii pyrrhus | subspecies | 4 | 0 |
| united states | nevada | crotalus scutulatus | species | 0 | 1 |
| united states | nevada | crotalus scutulatus scutulatus | subspecies | 0 | 1 |
| united states | nevada | crotalus stephensi | species | 3 | 0 |
| united states | new mexico | crotalus atrox | species | 122 | 1 |
| united states | new mexico | crotalus lepidus | species | 0 | 1 |
| united states | new mexico | crotalus lepidus klauberi | subspecies | 15 | 1 |
| united states | new mexico | crotalus molossus | species | 5 | 0 |
| united states | new mexico | crotalus scutulatus | species | 66 | 3 |
| united states | new mexico | crotalus scutulatus scutulatus | subspecies | 0 | 2 |
| united states | new mexico | crotalus scutulatus x viridis | species | 78 | 1 |
| united states | new mexico | crotalus viridis | species | 185 | 4 |
| united states | new mexico | crotalus viridis viridis | subspecies | 0 | 4 |
| united states | new mexico | crotalus willardi | species | 0 | 1 |
| united states | new mexico | crotalus willardi obscurus | subspecies | 0 | 1 |
| united states | new york | crotalus horridus | species | 6 | 0 |
| united states | oklahoma | crotalus atrox | species | 2 | 1 |
| united states | oklahoma | crotalus viridis | species | 0 | 1 |
| united states | oklahoma | crotalus viridis viridis | subspecies | 0 | 1 |
| united states | pennsylvania | crotalus horridus | species | 0 | 1 |
| united states | south dakota | crotalus viridis | species | 0 | 1 |
| united states | south dakota | crotalus viridis viridis | subspecies | 0 | 2 |
| united states | tennessee | crotalus viridis | species | 0 | 1 |
| united states | texas | crotalus adamanteus | species | 1 | 0 |
| united states | texas | crotalus atrox | species | 939 | 4 |
| united states | texas | crotalus horridus | species | 1 | 0 |
| united states | texas | crotalus lepidus | species | 2 | 0 |
| united states | texas | crotalus lepidus klauberi | subspecies | 3 | 0 |
| united states | texas | crotalus lepidus lepidus | subspecies | 9 | 0 |
| united states | texas | crotalus molossus | species | 13 | 0 |
| united states | texas | crotalus scutulatus | species | 0 | 1 |
| united states | texas | crotalus scutulatus scutulatus | subspecies | 2 | 1 |
| united states | texas | crotalus viridis | species | 8 | 1 |
| united states | texas | crotalus viridis viridis | subspecies | 0 | 1 |
| united states | utah | crotalus scutulatus | species | 0 | 1 |
| united states | utah | crotalus scutulatus scutulatus | subspecies | 0 | 1 |
| united states | utah | crotalus viridis | species | 1 | 0 |
| united states | virginia | crotalus adamanteus | species | 0 | 1 |
| united states | wyoming | crotalus viridis | species | 0 | 1 |
| united states | wyoming | crotalus viridis viridis | subspecies | 0 | 1 |
| venezuela | | crotalus durissus | species | 5 | 0 |
| venezuela | anzoategui | crotalus durissus | species | 0 | 2 |
| venezuela | aragua | crotalus durissus | species | 0 | 1 |
| venezuela | nueva esparta | crotalus durissus | species | 0 | 2 |
| venezuela | nueva esparta | crotalus durissus cumanensis | subspecies | 0 | 2 |
| venezuela | nueva esparta | crotalus durissus terrificus | subspecies | 0 | 2 |