David Patrick, Pauwels Olivier S G, Nguyen Truong Quang, Vogel Gernot
Reptiles & Amphibiens, UMR 7205 OSEB, Département évolution et Systématique, CP 30, Muséum National d'Histoire Naturelle, 57 rue Cuvier, F-75231 Paris Cedex 05, France.; Email:
Département des Vertébrés Récents, Institut Royal des Sciences Naturelles de Belgique, Rue Vautier 29, B-1000 Brussels, Belgium.; Email:
Zootaxa. 2015 Apr 21;3948(2):203-17. doi: 10.11646/zootaxa.3948.2.3.
Parahelicops boonsongi Taylor & Elbel, 1958 is known from only three specimens from Thailand. It has been placed either in the genus Parahelicops Bourret, 1934, along with Parahelicops annamensis Bourret, 1934, or in the genus Opisthotropis Günther, 1872. We compared its morphological characters with those of P. annamensis and with three other relevant genera, Opisthotropis, Pararhabdophis Bourret, 1934, and Paratapinophis Angel, 1929. Parahelicops boonsongi is phenotypically distinct from Parahelicops annamensis, Opisthotropis, and all other natricine genera. We consequently erect a new genus, Isanophis gen. nov., to accommodate Parahelicops boonsongi.
1958年命名的布氏半穴蛇(Parahelicops boonsongi Taylor & Elbel)仅依据来自泰国的三个标本所知。它要么与1934年命名的安南半穴蛇(Parahelicops annamensis Bourret)一同被置于1934年的半穴蛇属(Parahelicops Bourret)中,要么被置于1872年的后棱蛇属(Opisthotropis Günther)中。我们将其形态特征与安南半穴蛇以及其他三个相关属,即后棱蛇属、1934年的颈棱蛇属(Pararhabdophis Bourret)和1929年的拟穴蛇属(Paratapinophis Angel)的形态特征进行了比较。布氏半穴蛇在表型上与安南半穴蛇、后棱蛇属以及所有其他水游蛇科属不同。因此,我们建立了一个新属,即伊桑蛇属(Isanophis gen. nov.),以容纳布氏半穴蛇。