A new species of land snail from the genus Diplommatina Benson, 1849 (Gastropoda, Caenogastropoda, Diplommatinidae) from Sikkim Himalaya, North East India

ABSTRACT

A new species of Diplommatina Benson, 1849 from Sikkim, Northeast India is described based on shell morphology. This new species is found to be distinct in its externally visible large parietal tooth, and in the absence of a columellar tooth on the shell aperture. A detailed comparison with the closest congeners of the new species is provided. Diplommatina bidentata Vermeulen, Liew & Schilthuizen, 2015 from Malaysia is the only morphologically similar species with a tooth on the parietal lip, but it differs from the new species in having a tooth on the columellar lip as well as other shell characters. A checklist is also given for all the described Diplommatina species from North East India, as well as those from Darjeeling, West Bengal.

http://www.zoobank.org/lsid:zoobank.org:act:0C252457-39A9-4451-AA24-8CA37F0A6271

KEYWORDS:

• High altitude
• microsnail
• morphometrics
• shell morphology
• taxonomy

Acknowledgements

We wish to thank the Sikkim Forest Department for the necessary permission to carry out research (F.No: 78/GOS/FEWMD/BDR/CCF (HQ)/120). We thank Ms. Sunitha Kathiwara and Dr. Karthick Balasubramanian for support during the field survey. We are also indebted to Surya Narayanan for his valuable input on manuscript preparation. Special thanks to Drs. Philippe Bouchet and Barna Páll-Gergely for help in nomenclature of the new species described here.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The authors would like to thank the Department of Biotechnology, Govt. of India [BT/01/17/NE/TAX] for funding.