Notes on the sinistral helicoid snail Bertia cambojiensis (Reeve, 1860) from Vietnam (Eupulmonata, Dyakiidae)

By

Čhirasak Sutčharit
Naggs, Fred
Ablett, Jonathan
Sang, Pham Van
LUONG, VAN HAO
Somsak Panhā‏

Type

Article

Date of Publication

2019

Original Publication

ZooKeys

Volume

885

Pages

1--14

Subjects

Conservation , DNA barcoding , Endangered , left-handed , systematics

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.885.38980

 

Abstract

Since the time of the original description there have been no precise locality records in Cambodia ofBertia cambojiensis(Reeve, 1860) and it was believed to be extinct. In 2012, a joint Natural History Museum survey with Vietnamese colleagues rediscovered living populations of this huge sinistral helicoid snail in a protected area of southern Vietnam. The genitalia and radula morphology are re-assessed and type specimens of all recognised congeners are figured herein. The unique morphological characters of this species are a small and simple penis, well-developed amatorial organ complex that incorporates four amatorial organ ducts, a short gametolytic organ complex and spiked papilla, and radula morphology with unicuspid teeth. The type locality ofB. cambojiensis, which has been contentious, is determined here to be in the vicinity of ‘Brelum’, Vietnam, near the border with Cambodia. In addition, the nucleotide sequences of barcoding genes COI, 16SrRNA and 28S fragments were provided for further comparison.