Figure 1 from: Hesselberg T, Simonsen D (2019) A comparison of morphology and web geometry between hypogean and epigean species of Metellina orb spiders (family Tetragnathidae). Subterranean Biology 32: 1-13. https://doi.org/10.3897/subtbiol.32.36222

Figure 1 Principal component ordination plots of morphological and web parameters of Metellina merianae (red circle) and Metellina mengei (blue triangle). A Morphological variables (total length, cephalothorax width, patella-tibia length of leg I and leg III). The combined proportion of variance explained by PCA1 and PCA2 was 98%. B Web parameters (number of spirals, number of radii, vertical length of web, horizontal length of web and hub diameter). The combined proportion of variance explained by PCA1 and PCA2 was 78%.