黄脊游蛇Orientocoluber spinalis
地方名：白线子、白带子
形态特征：身体细长，成体全长600～1200mm。体背棕褐色，背脊有一条纵行的黄色或白色长纹，自额鳞向后直到尾端。最外一行背鳞腹侧灰色，中央白色，前后连缀成一条白线。腹鳞两端与背鳞相接处的前半部有黑点，向后逐渐变浅，直至消失。腹面浅黄红色。上唇鳞8枚，呈3-2-3式，下唇鳞多10枚，背鳞平滑，为17-17-15行，最外一行鳞很宽。腹鳞140～211枚，尾下鳞79～100对，肛鳞二分。
生活习性：生活于山区、丘陵、溪谷或较干燥的山地。性驯善，不咬人，爬行迅速，通常为昼行性，有时也夜间活动，以昆虫、蜥蜴和幼蛙为食。卵生，7月采到的雌蛇怀卵9枚。
地理分布：国内分布于淮河以北大部分地区；国外分布于朝鲜、蒙古国。主要捕食蜥蜴，偶见捕食蛙类。
环渤海地区分布：均有分布。
生存现状：无危（LC）。
Squamata Colubridae Orientocoluber
57.Orientocoluber spinalis
Description Adults up to 600-1,200mm TOL, slender body.Body dorsum is brown; the spine is with a ventral yellow or white stripe, extending back to the tail end; the outermost line of dorsal scales are grey on the ventral side, white color in the center, a white line connected head and tail; black dots at the connection of ventral scales and dorsal scales,the first half of the connection becomes shallower gradually backwards the tail until being disappeared; ventral surface is yellowish red; 8 supralabials are arranged in 3-2-3 rows and 10 infralabials; dorsal scales are smooth and arranged in 17-17-15 rows; the outermost line of scales are wide; 140-211 ventral scales; 79-100 pairs of subcaudals; 2 anal plates on the anus.
Behaviour Orientocoluber spinalis live in mountains, hills, valleys or dry mountains.They are meek and don't bite people; they crawl quickly and usually move around at daytime,sometimes they also move at nights.They feed on insects, lizards and young frogs.They are ovoviviparous.The female snake which is caught in July has 9 eggs.
Distribution China: in the north of the Huai River.At abroad: in North Korea and Mongolia.Distribution around Bohai Sea: everywhere.
Conservation Least Concerned (LC).
