2007/07/11 by Martin Haase, Menno Schilthuizen · 4 citations
Earth and Planetary Sciences · Agricultural and Biological Sciences · Environmental Science · #Marine Biology and Ecology Research #Mollusks and Parasites Studies #Parasite Biology and Host Interactions
paper · pdf · doi:10.1093/mollus/eym020
openalex publication_date 2007/07/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/05/19
In a previous paper, we have reported on a new, troglobitic species of Georissa and its possible parapatric origin from Georissa saulaeBenthem-Jutting, 1966, which occurs outside the cave system of Batu Sanaron, a limestone outcrop in Sabah, Malaysian Borneo. These analyses were based on genetic and morphometric data. Here, we formally describe the new species adding anatomical data derived from dissections and histological serial sections as well as fine structural data of shell, operculum and radula, and compare it with its stem species. The two species differ in shell and radular morphology as well as genital characters. Since we found anatomical differences between very closely related species, we assume that dissections would be of general use for the taxonomy of Georissa and the remaining nominal genus-group taxa of the poorly known Hydrocenidae.