Fig. 6 Steromphala umbilicaris (Linnaeus, 1758) and Steromphala nebulosa (Philippi, 1848). a PCA plot of PC1 vs. PC2 of genus Steromphala. Steromphala umbilicaris (green) separates well from all other species. There is no overlap between specimens from this study and the type material. One individual (Linné 24) nests within St. adriatica. Steromphala nebulosa (grey) nests at the edge of St. umbilicaris. b Representative specimen of St. umbilicaris from this study. c Representative specimen of St. nebulosa from this study. d: Designated lectotype for St. umbilicaris located at LSL (LSL.504). Scale bars 5 mm

Published as part of Steiner, Susanne Affenzeller Nicole Haar Gerhard, 2017, Revision of the genus complex Gibbula: an integrative approach to delineating the Eastern Mediterranean genera Gibbula Risso, 1826, Steromphala Gray, 1847, and Phorcus Risso, 1826 using DNA-barcoding and geometric morphometrics (Vetigastropoda, Trochoidea), pp. 789-812 in Organisms Diversity & Evolution 17 (4) on page 803, DOI: 10.1007/s13127-017-0343-5, http://zenodo.org/record/13166741