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The common garter snake (''Thamnophis sirtalis'') is a species of natricine snake, which is indigenous to North America and found widely across the continent. Most common garter snakes have a pattern of yellow stripes on a brown or green background, and their average total length (including tail) is about , with a maximum total length of about .〔Conant, Roger. (1975). ''A Field Guide to Reptiles and Amphibians of Eastern and Central North America, Second Edition.'' Boston: Houghton Mifflin. xviii + 429 pp. + Plates 1-48. ISBN 0-395-19979-4 (hardcover), ISBN 0-395-19977-8 (paperback). (''Thamnophis sirtalis'', pp. 157-160 + Plates 23 & 24 + Map 116).〕〔()〕 The average body mass is .〔()〕 ==Subspecies== Current scientific classification recognizes thirteen subspecies (ordered by date):〔(''Thamnophis sirtalis '' ), Reptile Database〕 *''T. s. sirtalis'' (Linnaeus, 1758) – eastern garter snake *''T. s. parietalis'' (Say, 1823) – red-sided garter snake (has also been introduced to northern Halland in Sweden) *''T. s. infernalis'' (Blainville, 1835) – California red-sided garter snake 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「common garter snake」の詳細全文を読む スポンサード リンク
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