Five times over: 42 new Angustopila species highlight Southeast Asia’s rich biodiversity (Gastropoda, Stylommatophora, Hypselostomatidae)

Seven sympatric Angustopila species collected in Qua Vang Cave, Cat Ba Island, Halong Bay, Vietnam A A. babel Páll-Gergely & Vermeulen, sp. nov. B A. megastoma Páll-Gergely & Vermeulen, sp. nov. C A. thersites Páll-Gergely & Vermeulen, sp. nov. D A. apiostoma Páll-Gergely & Vermeulen, sp. nov. E A. fratermajor Páll-Gergely & Vermeulen, sp. nov. F A. halongensis Páll-Gergely & Vermeulen, sp. nov. G A. quadridens Páll-Gergely & Vermeulen, sp. nov.