东北林蛙Rana dybowskii
地方名：哈士蟆
形态特征：雄性体长55～70mm，雌性58～80mm。体型肥大，头宽略大于长，吻端突出于下唇，鼓膜圆而略大，犁骨齿两小团，略呈椭圆形，背侧褶与中国林蛙相类似；后肢略肥而长，贴体前伸时胫跗关节可达鼻眼间。皮肤略光滑，背部及体侧有稀散疣粒，排列不规则。雄性具一对咽侧内声囊，第一指有4团瘤状灰色婚垫。生活时体色变异大，多为土黄色、黄褐色或者黑褐色，疣粒或周围多呈黑色；腹面乳白色，有深色云斑；颞部和鼓膜褐色或褐色，四肢背部具黑褐色横纹。
生活习性：生活于沿海地带至海拔1000m以上的山区，多活动于草丛和林下。繁殖期为4—5月，越冬和产卵等习性与中国林蛙相似。
地理分布：国内分布于东北三省和内蒙古东部；国外分布于俄罗斯远东地区、蒙古国东部、朝鲜半岛和日本对马岛。
环渤海地区分布：见于辽宁东部。
生存现状：无危（LC）。
Anura Ranidae Rana
12.Rana dybowskii
Description Adult males SVL normally up to 55-70mm, females up to 58-80mm; HW longer than HL; snout longer than the lower lip; rounded and bigger tympanums; two oval rounded vomerine teeth; the dorsolateral folds are similar to Rana chensinesis; hindlimbs long; the tibio-tarsal articulation reaching between the nostril and eye.Skin is smooth, with warts on the dorsum and the lateral, without orderly pattern.Males have two vocal sacs,4 warty gray nuptial pads on finger I.Body is khaki, fulvous or black brown; black skin around warts; milky belly has dark nebulous spots; brown temple and tympanums; dark brown transverse stripes on the limbs and back.
Behaviour Rana dybowskii live in elevations above 1,000m to 2,000m in the mountainous area, acting in the grass or under the tree.They breed in April and May.Their habits of hibernating and spawn are similar to Rana chensinesis.
Distribution China: Liaoning Province, Jilin Province, Heilongjiang Province and east Inner Mongolia.At abroad: in the Russian Far East, the east of Mongolia, Korean Peninsula and Tsushima in Japan.Distribution around Bohai Sea: in the east of Liaoning Province.
Conservation Least concern (LC).
