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.

Published as part of Páll-Gergely, Barna & White, Tom S., 2023, Solving the mystery of the misunderstood Bensonella plicidens (Benson, 1849) (Gastropoda: Stylommatophora: Hypselostomatidae), pp. 2011-2029 in Journal of Natural History 56 (45 - 48) on page 2014, DOI: 10.1080/00222933.2022.2152750, http://zenodo.org/record/7560931