Alycaeidae Blanford, 1864

Jirapatrasilp, Parin, Thi, Sothearen, Chantha, Nasak, Chourn, Phyroum, Sophea, Chhin, Jeratthitikul, Ekgachai, Pholyotha, Arthit, Siriwut, Warut, Srisonchai, Ruttapon, Panha, Somsak & Sutcharit, Chirasak, 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), pp. 65-72 : 66

Subfamily Alycaeidae Blanford, 1864 Chamalycaeus von Möllendorff, 1897

Alycaeus ( Chamalycaeus) von Möllendorff, 1897: 93 . Kobelt, von Möllendorff, 1897: 148. Kobelt, 1902: 352. Gude, 1921: 223.

Chamalycaeus ( Chamalycaeus) – Thiele, 1929: 107–108. Wenz, 1938: 477–478. Egorov, 2013: 35.

Chamalycaeus – Páll-Gergely et al., 2020: 34–36. Páll-Gergely et al., 2021: 5.

Type species. Alycaeus ( Chamalycaeus) fruhstorferi von Möllendorff, 1897 [ Páll-Gergely et al., 2020: fig. 6b] by monotypy.

Remarks: This genus is diagnosed by having a spirally-striated teleoconch, a protoconch without spiral striae, and a wide umbilicus. At present, there is a total of 31 species and two subspecies of Chamalycaeus known from the southeastern Himalaya Region, Myanmar, Thailand, down to the Malay Peninsula, Sumatra, Java, Borneo, Sulawesi, including the Philippine Palawan Island [ Páll-Gergely et al., 2020, 2021; Vermeulen, Liew, 2022]. See Páll-Gergely et al. [2020] for extended diagnosis and taxonomic remarks.