Paropeas achatinaceum (Pfeiffer, 1846) and Other Alien Subulinine and Opeatine Land Snails in European Greenhouses (Gastropoda, Achatinidae)

Land snails of the family Achatinidae, subfamilies Subulininae and Opeatinae, are commonly reported as alien species in European greenhouses, where they often reach high densities. These introduced species usually have tropical cosmopolitan distributions. Four of them (Opeas hannense, Allopeas clavulinum, Subulina octona, and S. striatella) are commonly reported and illustrated from greenhouses across Europe. A fifth species, Allopeas gracile,...