SEM of radula morphology of Georissa. A–D. G. quinquelirata sp. nov.; E–H. G. kohsichangensis sp. nov.; A, E. Radula overview; B, F. Radula segment; C, G. Lateral teeth (Lt); D, H. Marginal teeth (Mt); I–L. G. sagitta sp. nov. M–P; G. digitinota sp. nov.; I, M. Radula segment; J, M. Radula segment close up; K, O. Lateral teeth (Lt); L, P. Marginal teeth (Mt). Color highlights show radula position; blue: small central teeth (Ct), purple: lateral teeth, and orange: marginal teeth.

 
 
  Part of: Klongklaew K, Poeaim S, Dumrongrojwattana P (2024) Four new species of Georissa W. Blanford, 1864 (Gastropoda, Hydrocenidae) from Thailand. Zoosystematics and Evolution 100(4): 1347-1360. https://doi.org/10.3897/zse.100.128717