Fig. 3From: Multi-dimensionality and variability in folk classification of stingless bees (Apidae: Meliponini)Principal Component Analysis based on similarity judgments between folk taxa made by Criollos. The first three components of PCA explain the 61 % of variation accumulated. For better visualization shown separately; a) the similarity between described folk taxa (black dots) and b) vectors of referent folk taxa (empty dots). The minimum spanning trees is represented by continues lines between dots. See text for description of groups (1, 2, 3, 4) in the graphicBack to article page