Figure 5 from: Yu Y, Jiao Y, Zhang J (2024) Description of a new species of the genus Cultellus Schumacher, 1817 (Bivalvia, Pharidae) from the South China Sea, based on integrative taxonomy. Zoosystematics and Evolution 100(2): 425-436. https://doi.org/10.3897/zse.100.113972

Figure 5 Principal component and thin plate spline analyses, based on outlines of the genus Cultellus. A. The extreme distortion of the outlines in the negative of PC2; B. The extreme distortion of the outlines in the positive of PC1; C. The extreme distortion of the outlines in the negative of PC1; D. The extreme distortion of the outlines in the positive of PC2. Each colour of the dot in the principal component analysis diagram represents a species.