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Fig. 2 | BMC Evolutionary Biology

Fig. 2

From: Phenotypic disparity in Iberian short-horned grasshoppers (Acrididae): the role of ecology and phylogeny

Fig. 2

Scatterplot of the two first principal components of head shape variation (PChs vs. PChs2). Green and brown circles indicate plant-perching and ground-perching species, respectively. Thin-plate spline deformation grids for the two most extreme cases relatives to the overall reference shape (C. wattenwylianus and B. tryxalicerus) are shown. A picture illustrating the position of the 14 landmarks used to characterize head shape variation is also represented in the right-bottom corner of figure

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