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| Chamalycaeus aduncus Jirapatrasilp, in Jirapatrasilp, Thi, Chantha, Chourn, Sophea, Jeratthitikul, Pholyotha, Siriwut, Srisonchai, Panha et Sutcharit, 2025. |
This study reports the first record of the operculate micro land snail from the Alycaeinae, Chamalycaeus aduncus Jirapatrasilp sp. nov., also the first new species of the genus in Cambodia, based on a recent survey in Battambang. This new species is similar to Chamalycaeus excisus (Möllendorff, 1887) and C. excisus sublimus Páll-Gergely et Auffenberg, 2019 from the Philippines, in shell size and shape, and the strongly downwards coiling of R3, but differs in having a shorter R2 without any blunt keel, a round aperture without any incision, and a beak- or hook-like basal edge of the outer peristome.
Keywords: Battambang; Cyclophoroidea; Gastropoda; Mollusca; taxonomy
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| Chamalycaeus aduncus sp. nov. A paratype CUMZ 14462/1, and B paratype CUMZ 14462/2, showing a scraping hole at the umbilical side. |
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| . Representative SEM images of Chamalycaeus aduncus sp. nov., holotype CUMZ 14461 A whole shell in different positions, and B Close-up images of the aperture; white arrows pointing to the beak- or hook-like basal edge of the outer peristome. |
Chamalycaeus aduncus Jirapatrasilp sp. nov.
Parin JIRAPATRASILP, Sothearen THI, Nasak CHANTHA, Phyroum CHOURN, Chhin SOPHEA, Ekgachai JERATTHITIKUL, Arthit PHOLYOTHA, Warut SIRIWUT, Ruttapon SRISONCHAI, Somsak PANHA and Chirasak SUTCHARIT. 2025. The First Record of an Operculate Micro Land Snail from the Alycaeinae (Caenogastropoda, Cyclophoridae) in Cambodia, with Description of A New Species of Chamalycaeus von Möllendorff, 1897. Ruthenica Russian Malacological Journal. 35(2); 65-72. https://www.ruthenica.net/node/6016
