Laocaia Kuzminykh, 1999

Dedov, Ivaylo, Schneppat, Ulrich, Vu, Manh Quang & Huy, Nguyen Quoc, 2019, A new semislug of the genus Laocaia (Gastropoda, Pulmonata, Helicarionidae) from Vietnam, ZooKeys 846, pp. 19-30 : 19

Genus Laocaia Kuzminykh, 1999

Type species.

Laocaia attenuata Kuzminykh, 1999.

Diagnosis.

small slugs with non-coiled visceral hump, rounded posteriorly, lying in V- shaped body groove; body cavity not extending into tail; shell very thin, non-spiral, internal, hemispheric, completely covering visceral hump, with small calcified part; penis short, bulbous, with large stimulator inside; epiphallus and flagellum absent; spermatheca entering atrium between vagina and penis (amended after Kuzminykh 1999).

Remarks.

for the systematic position of the genus Laocaia , we here follow MolluscaBase (2018). The genus was originally placed in the family Ariophantidae by Kuzminykh (1999), which was followed by Bouchet et al. (2017). However, Schileyko (2002, 2011) transferred it to the family Helicarionidae .