Jones Danny R, Eversole Arnold G
Jantunen LLC, Houghton, MI 49931 USA; Email:
Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC 29634 USA.; Email:
Zootaxa. 2015 Dec 16;4058(2):151-74. doi: 10.11646/zootaxa.4058.2.1.
Multivariate and univariate statistical analyses of morphometric data and examination of morphological characters of the crayfish species Cambarus (Hiaticambarus) longirostris revealed the existence of two undescribed species from populations previously considered to be C. longirostris in tributaries of the Tennessee River in north Alabama and central south Tennessee. Cambarus (Hiaticambarus) andersoni and Cambarus (Hiaticambarus) diupalma differed from C. longirostris and from each other in aspects of chela morphometrics and in the presence or absence of qualitative characters. Cambarus andersoni has a corneous spine on the base of the ventral surface of the rostrum that is absent in the other two species; C. diupalma abdominal pleura are acute whereas they are subtruncate in C. andersoni and in C. longirostris. The known range of both of the new species is restricted to northern tributaries of the Tennessee River in south Tennessee and north Alabama. Cambarus diupalma is considered Endangered and C. andersoni is considered Vulnerable using American Fisheries Society conservation categorization.
对小龙虾物种长吻坎氏螯虾（Cambarus (Hiaticambarus) longirostris）的形态测量数据进行多变量和单变量统计分析，并检查其形态特征，结果显示，在阿拉巴马州北部和田纳西州中南部的田纳西河支流中，先前被认为是长吻坎氏螯虾的种群中存在两个未描述的物种。安德森氏坎氏螯虾（Cambarus (Hiaticambarus) andersoni）和迪帕尔马氏坎氏螯虾（Cambarus (Hiaticambarus) diupalma）在螯的形态测量方面以及定性特征的有无上，与长吻坎氏螯虾以及彼此之间都存在差异。安德森氏坎氏螯虾在吻部腹面基部有一个角质刺，而其他两个物种没有；迪帕尔马氏坎氏螯虾的腹部胸膜尖锐，而在安德森氏坎氏螯虾和长吻坎氏螯虾中则是近截形。这两个新物种的已知分布范围都局限于田纳西州南部和阿拉巴马州北部的田纳西河北部支流。根据美国渔业协会的保护分类，迪帕尔马氏坎氏螯虾被视为濒危物种，安德森氏坎氏螯虾被视为易危物种。
