Children (40 direct children, 90 direct and indirect children):
Ribbon snake
(tree size 4)
Eastern ribbon snake
Aquatic garter snake
(tree size 3)
Western aquatic garter snake
Butler's garter snake
Thamnophis butleri
Plains garter snake
Thamnophis radix
Thamnophis exsul
Montane garter snake
Western terrestrial garter snake
(tree size 6)
Thamnophis elegans
Common garter snake
(tree size 13)
Thamnophis sirtalis
Northwestern garter snake
Thamnophis ordinoides
Thamnophis marcianus
(tree size 2)
Checkered gartersnake
Blackneck garter snake
(tree size 3)
Thamnophis cyrtopsis
Thamnophis eques
(tree size 10)
Mexican garter snake
Two-striped garter snake
Thamnophis hammondii
Thamnophis gigas
Giant garter snake
Western ribbon snake
(tree size 3)
Thamnophis proximus
Thamnophis rufipunctatus
Narrow-headed garter snake
Thamnophis angustirostris
Longnose garter snake
Thamnophis brachystoma
Shorthead garter snake
Thamnophis bogerti
Bogert's garter snake
Thamnophis conanti
Conant's garter snake
Thamnophis chrysocephalus
Goldenhead garter snake
Thamnophis couchii
Western aquatic garter snake
Thamnophis fulvus
Highland garter snake
Thamnophis godmani
Godman's garter snake
Thamnophis lineri
Thamnophis melanogaster
(tree size 2)
Blackbelly garter snake
Thamnophis nigronuchalis
Southern durango spotted garter snake
Thamnophis mendax
Tamaulipan montane garter snake
Thamnophis postremus
Tepalcatepec valley garter snake
Thamnophis pulchrilatus
Yellow-throated garter snake
Thamnophis rossmani
Rossman's garter snake
Thamnophis scalaris
Longtail alpine garter snake
Thamnophis sumichrasti
Sumichrast's garter snake
Thamnophis scaliger
Short-tail alpine garter snake
Thamnophis valida
(tree size 4)
West coast garter snake
Thamnophis errans
Mexican wandering garter snake
Thamnophis eburatus
Thamnophis dubia
Thamnophis caverna
Thamnophis digueti
Thamnophis unilabialis