AMPHIESMA SAUTERI

Sauter's Watersnake

梭德氏游蛇

保育等級: 非保育類

無毒

 

相關影片

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鄉野調查

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家族

黃頷蛇科,Natricinae 亞種

Colubridae, subfamily Natricinae

 

最大體長 76 cm

 

台灣棲地分布

台灣全島1000 m以下皆可見到其蹤影。 

 

世界棲地分布

台灣地區,南中國(江西,廣西,廣東,福建,四川,湖北...), 北越南。

 

外觀描述

Medium to large snake; total length up to 200 cm. There are 15-27 (19-21 at mid-body and 23-27 at neck) rows of smooth and glossy scales; the dorsolateral scales are strongly oblique. Head is broad, roughly triangular and slightly distinct from neck; body is moderately heavy, slightly flattened, and may be considerably flattened when angry; tail is short. Nostrils large and conspicuous. Eye is medium-sized; iris is dark dirty yellow dappled with dark gray black to blue-black and pupil is round, jet black. There are no loreals. Tongue is dark gray to blue-black, with stem possibly lighter in color than forks. Fangs are rigid, short to medium length, and located anterior to middle of upper law. Upper head is light gray tan to dark gray-black, usually the same color as upper body and tail; sides of head are lighter in color. Individuals bearing other colors in dorsal surface, such as white, yellow or brown may be found. There may be irregular or scattered crosslines of white to light gray along upper body and a spectacle-like mark on the upper face of the expanded neck (hood); however, the designs on the hood may range from partial figures to non-symmetrical patterns. Ventral head and neck are white to light gray or light orange; there may be one pair of small dark spots followed by a dark transverse band on the ventral face of hood. The color of ventral body and tail may be white to gray, dark gray mottled with white, or blackish. The populations in different geographic regions of Taiwan reveal a unique composition of ventral coloration: the eastern population is exclusively blackish (100%), the central and southern populations are mainly white to gray (both 80%), and the proportions of blackish and white-gray morphs in the northern population are 60% and 30%, respectively. Anal scale is entire, and subcaudals are paired.

 

生態描述

在台灣與南中國通常會在路邊的溝渠與落葉堆中發現梭德氏游蛇的蹤跡。落葉堆通常隱藏了各式各樣的小生物,蚯蚓、蛞蝓等等,而這些生物通通都是梭德氏的盤中美食。牠們體長幾乎不會超過兩英呎,並且有著溫馴的個性,可以非常讓人安全的拿在手上就進觀察。是一種非常適合新手與對蛇有恐懼的人認識與親近蛇類的溫和蛇類。除了溝渠之外,此日夜間皆會出沒的小型蛇類也會出現在其他潮濕的環境,像是水塘或是溪邊等。牠以蚯蚓、蛞蝓、蝌蚪與青蛙等為主食。母蛇每次會產下約 5 枚長 2.5cm 寬 7.5cm的卵。幼蛇的頭比較黑也比較圓,隨著年齡增長顏色會變淡,頭行也會變的稍尖。

 

學名與俗名

Amphiesma:   來自希臘語有 "服裝, 祭帶" 的意思,轉為白話就是"腹鏈",用來形容牠腹鱗兩側的鏈狀花紋。類似的還有 Amphiesma stolatum(花浪蛇)

sauteri : 德國人 Hans Sauter(漢斯‧梭德氏) 是一位在台的昆蟲學家。梭德氏游蛇的模式標本就是由他採集,為了紀念而命名之。

梭德氏游蛇、棕黑游蛇、棕黑腹鏈蛇、梭德氏腹鏈蛇。

 

附註

此物種命名與分類根據 DAVID (2007)

 

相關連結

Reptile Database

翻譯:周信甫

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