A glimpse in the dark? A first phylogenetic approach in a widespread freshwater snail from tropical Asia and northern Australia (Cerithioidea, Thiaridae)

Radulae of “Thiara” aspera (Lesson, 1831) from Thailand. A, B. SUT 0312070, Nakhon Pathom province, pond at Silpakorn University campus; A. Central and lateral teeth; B. Marginal teeth; C, D. SUT 0311020, Samut Sakhon province, Klong Don Ko; C. Central and lateral teeth; D. Marginal teeth. E, F: SUT 0311053, Samut Sakhon Province, Klong Don Ko; E. Central and lateral teeth; F. Marginal teeth. Scale bars: 35 µm (A, E); 5 µm (B, F); 25 µm (C); 10 µm (D).