Description of a second known Liotyphlops caissara specimen (Serpentes: Anomalepididae)

Abstract: We recorded a second specimen of the poorly known insular blind snake Liotyphlops caissara. This new specimen expands the morphological variation of the number of dorsal scales in the genus Liotyphlops to 296 (vs. 304 in L. wilderi) and, considering the fact that the holotype of this species was destroyed, the present specimen represents the only available L. caissara individual in zoological collections. Also, this new record constitutes the first out of type locality and expands the distribution of the species in about 40 km to the northeastern. According to IUCN criteria (B1a, b [iii]), we suggest that L. caissara be included in the “Endangered” category, since it occurs in only two insular locations and exhibits an occurrence extension of摘要：本研究记录了此前鲜为人知的海岛盲蛇凯萨拉盲蛇（Liotyphlops caissara）的二号标本。该新标本将盲蛇属（Liotyphlops）的背鳞数量形态变异范围拓展至296枚（相较威氏盲蛇L. wilderi的304枚）；鉴于该物种的正模标本已损毁，本标本为当前动物标本馆藏中仅存的凯萨拉盲蛇个体。此外，此次记录为该物种首个偏离模式产地的分布记录，将其分布范围向东北方向拓展约40公里。依据国际自然保护联盟（IUCN）红色名录评估标准（B1a、b[iii]），我们建议将凯萨拉盲蛇列入"濒危"等级，鉴于该物种仅分布于两处海岛生境，且分布区延展范围为