Camaenidae, Pilsbry, 1895

Tumpeesuwan, Chanidaporn & Tumpeesuwan, Sakboworn, 2019, First verified record of the genus Landouria Godwin-Austen, 1918 from Thailand (Gastropoda: Stylommatophora: Camaenidae) with description of a new species, Raffles Bulletin of Zoology 67, pp. 298-305 : 300

Family Camaenidae

Asian Camaenidae Pilsbry, 1895 were taxonomically separated from the family Bradybaenidae Pilsbry, 1939 on the basis of the absence of dart apparatus and mucus glands in the reproductive system ( Páll-Gergely et al., 2013). Schileyko & Kuznetsov (1998) argued that the camaenid-like genitalia of Landouria , are the result of secondary reduction, and placed Landouria in the Bradybaenidae . However, the results from a study of the molecular phylogeny of the helicoid land snails indicated that AsianAustralasian camaenid and bradybaenid taxa intermingle in the same clade of the phylogenetic tree, which suggests that both taxa are confamilial ( Wade et al., 2007). This opinion was followed by Gittenberger et al. (2012) and Páll-Gergely et al. (2013), who considered Bradybaenidae Pilsbry, 1939 as a junior synonym of Camaenidae Pilsbry 1895 . We also agree with this opinion.