|
:''Common names: ''eastern cottonmouth'', ''cottonmouth moccasin'', ''water moccasin'', ''moccasin''〔Conant R. 1975. A Field Guide to Reptiles and Amphibians of Eastern and Central North America. Second Edition. First published in 1958. Houghton Mifflin Company Boston. 429 pp. 48 plates. ISBN 0-395-19979-4 (hc), ISBN 0-395-19977-8 (pb).〕〔Wright AH, Wright AA. 1957. Handbook of Snakes. Comstock Publishing Associates. (7th printing, 1985). 1105 pp. ISBN 0-8014-0463-0.〕 thumb ''Agkistrodon piscivorus piscivorus'' is a venomous pitviper, one of three subspecies of ''Agkistrodon piscivorus'', with different geographic distributions, found in the south eastern United States. == Description == This subspecies reaches 20-48 inches (51-121 cm) in length on average but has reached 74.5 inches (189 cm). The colour is mainly dark, and the body heavy. However younger specimens have red to brown crossbands, with a lighter brown background. The crossbands are spotted and speckled, and the tail suphur coloured. The patterning darkens with time with many older adults being completely black, as shown in the upper illustration. The scales are keeled and dark broad stripes on the face disguise the eyes, which cannot be seen when viewed from above, and have a vertical (cat's-eye) slit like pupil. The eye is separated from the nostril by a deep facial pit.(These specimens were all photographed in the Francis Beidler Forest)〔 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「Agkistrodon piscivorus piscivorus」の詳細全文を読む スポンサード リンク
|
