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- Title
Aenigmatoconcha sumonthai, a new helicarionid land snail from Chumphon Province, Southern Thailand (Helicarionidae: Durgellinae).
- Authors
Chanidaporn Tumpeesuwan; Sakboworn Tumpeesuwan
- Abstract
Aenigmatoconcha sumonthai, new species, is described from Tham Chang Phueak, a limestone range in Chumphon province, southern Thailand. The external morphology of the shell and soft parts, the genital system, and radula morphology were examined and compared with the type species of the genus, A. clivicola C. Tumpeesuwan & S. Tumpeesuwan, 2017 from northeastern Thailand. Externally the new species differs from A. clivicola in having a smaller shell, presence of black bands from the base of the long tentacles to the mantle edge, and both mantle shell lobes have numerous tiny white spots and irregular black marbling. The radula comprises approximately 22-35 transverse v-shaped rows of teeth, with each row having 11-150 unicuspid spatulated teeth. In the genital system, the penis is longer than the epiphallus and the base of the gametolytic sac is longer than the middle part.
- Subjects
SOUTHERN Thailand; SNAILS; HELICARIONIDAE; MOLLUSK morphology; RADULA
- Publication
Raffles Bulletin of Zoology, 2018, Vol 66, p170
- ISSN
0217-2445
- Publication type
Article