The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

The 2017/18  impact factor of the Herpetological Journal is 1.268

pdf 05. Intersexuality in Helicops infrataeniatus Jan, 1865 (Dipsadidae: Hydropsini)


Subscription / purchase required

pp. 93-95

Authors: Ruth A. Regnet, Fernando M. Quintela, Wolfgang Böhme & Daniel Loebmann

Abstract: Herein, we describe the first case of intersexuality in the Hydropsini tribe. After examination of 720 specimens of Helicops infrataeniatus Jan, 1865, we discovered one individual that presented feminine and masculine reproductive features. The specimen was 619 mm long, with seven follicles in secondary stage, of different shapes and sizes, and a hemipenis with 13.32 and 13.57 mm in length. The general shape of this organ is similar to that observed in males, although it is smaller and does not present conspicuous spines along its body. Deformities found in feminine and masculine structures suggest that this specimen might not be reproductively functional.

Key words: Follicles, hemipenis, hermaphroditism, water snake.

Download Access:

The latest 20 issues can be downloaded when logged in with a Herpetological Journal subscription membership.

Individual articles can be purchased for download.

Older issues and occasional Open Access articles are available for public download


For further information and submission guidelines please see our Journal Instructions to Authors

pdfBHS Ethics Policy

NOTE: as of January 2017, all new editions of the HJ are ONLY available online via the BHS website. The BHS no longer has a commercial hosting agreement with Ingenta  -  although editions prior to end 2016 remain accessible on Ingenta .  Those editions are of course also accessible on the BHS website for subscribers with an active and valid membership.  Should you experience any difficulty accessing HJ editions via the website or have any queries in this regard, please contact