Hypselostomatidae Zilch, 1959

Páll-Gergely, Barna & White, Tom S., 2023, Solving the mystery of the misunderstood Bensonella plicidens (Benson, 1849) (Gastropoda: Stylommatophora: Hypselostomatidae), Journal of Natural History 56 (45 - 48), pp. 2011-2029 : 2014

Hypselostomatidae Zilch, 1959

Remarks

Bouchet et al. (2017) treated Hypselostomatinae as a subfamily of Gastrocoptidae Pilsbry, 1918 . The systematic relationships of the genera classified in this (sub)family are largely unclear. Here, to be consistent with our previous papers (i.e. Páll-Gergely et al. 2015, 2020, 2022), we use Hypselostomatidae at the family level.

According to Pilsbry (1917), Boysidia Ancey, 1881 possesses a concrescent angular and parietal lamella, whereas they are separate in Bensonella and Paraboysidia . This systematics has been widely used since (i.e. Schileyko 1998; Panha and Burch 2005). However, it was already noted by Pilsbry (1917) that there are species showing intermediate character states. For example, Boysidia strophostoma ( Möllendorff, 1885) possesses clearly separated angular and parietal lamellae, but is still classified in Boysidia . Solving the homologies of apertural barriers and the systematics of the related hypselostomatid genera is beyond the scope of the present paper, but should be done as soon as possible.