史氏蟾蜍Bufo stejnegeri
地方名：小癞蛤蟆
形态特征：雄性体长50mm左右，雌性略大于雄性。头宽扁，吻端钝圆，吻棱明显，无犁骨齿，无鼓膜，耳后腺小而近圆形，四肢修长。皮肤粗糙，背部和体侧散布锥状小疣粒，腹面密布扁平小疣。体色变化较大，有红褐色、土黄色、灰绿色、藕荷色等。腹面多为淡黄褐色，斑纹不明显。繁殖期时，雄蟾第一指、第二指上有黑色婚刺。
生活习性：生活于海拔200～700m的丘陵和低山地带，成体、幼体多见于山涧溪流附近，夜间活动，觅食蚯蚓、昆虫等。每年4月中旬开始繁殖，卵带含卵700～900粒。9月末入蛰，在水底越冬。常见雄蟾与雌蟾在入蛰前抱对，待冬眠结束后即可繁殖交配。
地理分布：东北亚特有种，国内见于吉林、辽宁；国外分布于朝鲜半岛。
环渤海地区分布：仅见于辽宁东部。
生存现状：易危（VU）。
Anura Bufonidae Bufo
6.Bufo stejnegeri
Description Adult males SVL normally up to 50mm, females bigger than males.Head flattened and broad; snout tip rounded; canthus rostrals obvious; vomerine teeth and tympanum absent; parotoid glands small and rounded; limbs thin.Skin is rough; many warts on the dorsum and the lateral; flattened warts on the belly.Dorsal color is various, such as rufous, khaki, celadon, pale pinkish purple; beige belly with no obvious stripes and spots;dorsal surface of fingers I and II with black spines during breeding season.
Behaviour Bufo stejnegeri live in elevations about 200m to 700m, in or near the waters in the hills.The adult and larvaes always live near the brooks and come out at night.They feed on earthworms and insects.They begin to breed in the middle of April.There are 700 to 900 eggs in the egg strings.They begin to spend the winter at the end of September under the water.Males and females normally hold on each other before the winter and begin to mating after their hibernating.
Distribution Native to Northeast Asia.China: Jilin Province and Liaoning Province.At abroad: Korean Peninsula.Distribution around Bohai Sea: only in the east Liaoning Province.
Conservation Vulnerable (VU).
