Ptychopatula orcula, Taxa Only, Exact Match: 2 Treatments

Ptychopatula orcula			Phung, Chee-Chean, Yu, Fred Tuh Yit & Liew, Thor-Seng, 2017, A checklist of land snails from the west coast islands of Sabah, Borneo (Mollusca, Gastropoda), ZooKeys 673, pp. 49-104 : 52	52
Ptychopatula orcula			Foon, Junn Kitt, Clements, Gopalasamy Reuben & Liew, Thor-Seng, 2017, Diversity and biogeography of land snails (Mollusca, Gastropoda) in the limestone hills of Perak, Peninsular Malaysia, ZooKeys 682, pp. 1-94 : 4	4