Centropyxis percolabiensis form. inermis
The new and rare species of testate amebae [sic] of the families Arcellidae, Centropyxidae, Lesquereusiidae and Hyalospheniidae (Rhizopoda, Testacealobosia). Zoologicheskii Zhurnal, 73(11), Noyabr' 1994: 3-14. 6 [Zoological Record Volume 131]