FIGURE 4 in Revealing the stygobiont and crenobiont Mollusca biodiversity hotspot in the Caucasus: Part III. Revision of stygobiont microsnails (Mollusca: Gastropoda: Hydrobiidae) from the Russian part of Western Transcaucasia, with the description of new taxa

FIGURE 4. Principal component analysis of whorl number and shell measurements of 'Paladilhiopsis' spp. (see Table 2 for data). The first two principal components (PC) combined account for 96.9% of variance (PC1 92.3%, PC2 4.6%, PC3 1.7%). Blue arrow points to a single specimen identified as Paladilhiopsis subovata Starobogatov, 1962.