Taxonomic revision of the land snail genera Macrochlamys Gray, 1847 and Sarika Godwin-Austen, 1907 (Eupulmonata: Ariophantidae) from south-eastern Myanmar, with descriptions of three new species

ABSTRACT

Knowledge of Myanmar land snails is based on the late eighteenth to early twentieth century literature and many species need to be re-investigated, especially in the genera Macrochlamys Gray, 1847 and Sarika Godwin-Austen, 1907. In order to update this knowledge, this paper presents information on these two related genera based on new materials from south-eastern Myanmar. Fifteen species are recognised in the south-east of Myanmar. Of these, live material was available for eight Macrochlamys and Sarika species and these are described in full herein, based on data from the shell, external morphology and genitalia, including three species new to science (M. brachystia n. sp., S. concavata n. sp. and S. lopa n. sp.) and five species redescribed (M. aspides, M. kelantanensis, M. petasus, S. consepta and S. obesior). The remaining five species are known only from their shell morphology (M. cauisa, M. perpaula, M. poongee, M. salwinensis and S. birmana) and two species are known from genitalia (S. dugasti and S. resplendens). For these species the shells are figured and some taxonomic remarks are provided.

http://www.zoobank.org/urn:lsid:zoobank.org:pub:58D2A9E7-50FD-49C2-B2F4-4D00457EA331

KEYWORDS:

• Anatomy
• Indochina
• endemic
• systematics
• limestone
• Pulmonata
• South-East Asia

Acknowledgements

The authors gratefully thank Fauna & Flora International (FFI) and Ministry of Natural Resources and Environmental Conservation Forest Department, Myanmar for their help in field collecting. We are also indebted to the members of Animal Systematics Research Unit (ASRU), Department of Biology, Faculty of Science, Chulalongkorn University for field assistance, technical support and helpful suggestions. For the type materials, we are grateful to F. Naggs, J.D. Ablett and H. Taylor (NHM, London), T. von Rintelen and C. Zorn (ZMB, Berlin), and P. Bouchet, V. Héros, D. Brabant and M. Caballer (MNHN, Paris). The authors express their sincere gratitude to anonymous reviewers for valuable comments on this manuscript. This work was funded by the FFI, the 90th Anniversary of Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund), and additionally from the Human Resource Development in Science Project (Science Achievement Scholarship of Thailand, SAST), the TRF Senior Research Scholar RTA 5880002 (2015–2018).

Disclosure statement

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

ORCID

Chirasak Sutcharit http://orcid.org/0000-0001-7670-9540

Somsak Panha http://orcid.org/0000-0002-4431-2458

Additional information

Funding

This work was supported by Chulalongkorn University; Thailand Research Fund: [Grant Number RTA 5880002 (2015–2018)].