无蹼壁虎Gekko swinhonis
地方名：壁虎、蝎虎、蝎了虎子、守宫、爬墙虎
形态特征：中小型壁虎，全长在130mm以下。尾长等于或大于头体长，背腹扁平；吻扁而圆，鼻孔近吻端，与吻鳞相切，上唇鳞7～12枚，下唇鳞7～11枚；头、体和四肢背面被覆粒鳞，体背散布有稀疏的疣鳞；体和四肢腹面被覆瓦状鳞，腹鳞过体中部处32～26列；尾鳞近环状排列，尾下正中一行鳞宽大，尾基部肛疣多为2对，少数3对；无蹼，指（趾）端膨大，指（趾）下瓣单行；雄性有肛前孔6～10个。生活时，背面灰褐色，中央有一列略呈三角状斑纹，两侧斑纹不规则；四肢和尾背面有横纹。
生活习性：栖息在屋檐、墙缝、野外的岩洞和树洞等处。一般在日落后出来捕食，多在有灯光处活动。冬眠期一般从10月到翌年4月，南方地区较短。繁殖期为6—7月。交配时，雄体先咬住所追逐雌体后部，再跃上雌体背部，咬住颈背皮肤，以四肢抱住雌体，尾茎与雌体尾茎相对，将半阴茎插入雌体泄殖腔内，在爬行中完成交尾，也有的躲在隐蔽处交尾。卵多产在栖息地各种缝隙、树洞和岩洞中，也有的产在靠墙家具的后面。每次产卵2枚，卵白色，椭圆形，并列黏在一起，卵壳薄脆，约经50天孵化。
地理分布：中国特有种，广泛分布于华北、华东、华中及部分西北地区。
环渤海地区分布：均有分布。
生存现状：易危（VU）。
Squamata Gekkonidae Gekko
26.Gekko swinhonis
Description Small and medium-sized gekko, adults are less than 130mm in TOL.TAL is equal to or longer than SVL; dorsum and plastron are flattened; snout flattened and round;nostril close to the snout tip; 7-12 supralabials, 7-11 infralabials; dorsum of head, body andlimbs are covered by granular scales, body dorsum has sparse warts scales; body and ventral limbs are covered with imbricate scales; 32-26 lines of ventral scales on the middle of the body; tail scales are arranged in a circle, wide and big scales in the middle line are under the tail; usually 2 pairs of postcloacal tubercles around the caudal base; no web,fingers (toes) tip distended; the male has 6-10 preanal pores; dorsum is grey-brown; one stripe in triangle shape on the central dorsum, and stripes irregular on both sides; limbs and tails dorsum have lateral stripes.
Behaviour Gekko swinhonis live in eaves, cracks in walls, caves and tree holes in the wild.They usually hunt after sunset, and they move around the places with lights.The hibernation period usually is October to April next year, but such period is shorter in the south areas.The breeding season is June to July.During the mating, the male first grabs the dorsum of the female body that he is chasing, then jumps on the dorsum of the female body, bites the skin on the nape of the neck, and holds the female body in its arms and legs.Male's caudal stem is opposite to the female's, and the half penis is inserted into the female's cloacal cavity.They finish mating in crawling, and some of them finish mating in the hidden places.Eggs are usually produced in all kinds of gaps in the habitat, in tree holes and caves, some of them are also produced behind the wall furniture, laying two eggs each time, and the eggs are white and oval in shape, both of them are glued side by side.The egg shell is thin and fragile.It takes about 50 days for hatching.
Distribution Native to China; in the north, east, central China and areas of the northwest China.Distribution around Bohai Sea: generally across the Bohai Sea Rim.
Conservation Vulnerable (VU).
