黑游蛇

黑遊蛇（學名：）又名黑遊蛇、縊縮游蛇、縊縮遊蛇，是游蛇科游蛇屬下的唯一一種，總共11個亞種。

亞種 

 北部黑游蛇（Coluber constrictor constrictor） Linnaeus, 1758 - northern black racer
 Coluber constrictor anthicus (Cope, 1862) - buttermilk racer
 Coluber constrictor etheridgei , 1970 - tan racer
 Coluber constrictor flaviventris Say, 1823 - eastern yellow-bellied racer
 Coluber constrictor foxii (Baird & Girard, 1853) - blue racer
 Coluber constrictor helvigularis Auffenberg, 1955 - brown-chinned racer
 Coluber constrictor latrunculus Wilson, 1970 - black-masked racer
 Coluber constrictor oaxaca (Jan, 1863) - Mexican racer
 Coluber constrictor paludicola Auffenberg & Babbitt, 1955 - Everglades racer
 Coluber constrictor priapus Dunn & Wood, 1939 - southern black racer
 Coluber constrictor mormon (Baird & Girard, 1852) - western yellow-bellied racer

分布 
遍布美國各地，位於洛磯山脈以東，還有位於加拿大北部，南部則是墨西哥、瓜地馬拉、貝里斯。

参考文献 

黑游蛇