Vol. 63, 2024
(update: 2024.3.18)
Unveiling the Diversity of the
Smislug Gnus Durgella
Blanford, 1863 (Eupulmonata: Helicarionidae) from Thailand and Myanmar,
with Dscription of Two New Species
Arthit
Pholyotha1, Chirasak Sutcharit1, Ngwe Lwin2, and
Panha Somsak1,3,*
doi:-
1Animal
Systematics Research Unit, Department of Biology, Faculty of Science,
Chulalongkorn University, Bangkok, Thailand. E-mail:
arthitpolyotha@gmail.com (Pholyotha); jirasak4@yahoo.com (Sutcharit)
2Fauna and Flora International, Sanchaung Township,
Yangon, Myanmar. E-mail: ngwelwin@gmail.com (Lwin)
3Academy of Science, The Royal Society of Thailand,
Bangkok, Thailand. *Correspondence: E-mail: somsak.pan@chula.ac.th
(Somsak)
(Received 14 February 2023 /
Accepted 21 February 2024 / Published -- 2024)
Communicated by Benny K.K. Chan
Durgella is a terrestrial semislug
genus in the family Helicarionidae and currently comprises nine species
recorded from Thailand and Myanmar. Two species, D. concinna and D. rhaphiellus, have been described
based only on shell information, while the taxonomy of the remaining
seven species is comprehensively treated herein using comparative
morphology. Revised species descriptions are given for D. levicula, D. erratica, D. siamensis, and D. libas; D. birmanica (previously placed in
the Megaustenia) is moved to
this genus; and two species, D.
pentata sp. nov. and D. nulla
sp. nov. are described as new to science. Based on our findings, the
combination of shell characters including shape, size, aperture, and
umbilicus; the number of mantle extensions; and the genitalia,
especially the penis, epiphallus, and dart apparatus, can be used to
distinguish all these nine species. Among these nine recognised
species, only D. nulla sp.
nov. has no dart apparatus.
Key words: Comparative morphology,
Durgellinae, Indochina, Land snail, Systematics, Taxonomic revision
Citation: Pholyotha A, Sutcharit C, Lwin
N, Somsak P. 2024. Unveiling the diversity of the semislug genus Durgella Blanford, 1863
(Eupulmonata: Helicarionidae) from Thailand and Myanmar, with
description of two new species. Zool Stud 63:14.
We
follow the code of the International Commission on Zoological
Nomenclature, taxonomic papers with new species/genus descriptions will
not have early view version.
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