FIGURE 8 in Morphological diversification of alien and native aquatic snails of the genus Physa and Aplexa (Gastropoda: Physidae) of Western and Central European range

FIGURE 8. Correspondence Analysis (CA) diagram for the Physidae species; 1—Whorl convexity, 2—Spire, 3—Shell thickness, 4—Thickened appendages, 5—Shell shine, 6—Shell width and height ratio, 7—Aperture height, 8—Shell height, 9—Lip, 10—Apex, 11—Shell width, 12—Aperture width, 13—Spire height.