Figure 27 in The morphological and functional variability of pleon-holding mechanisms in selected Eubrachyura (Crustacea: Decapoda)

Figure 27. Phylogenetic relationship of the true freshwater crabs and closely-related brachyuran families, based on Tsang et al. (2014), with the condition of the pleon-holding mechanism observed in adult males in this study (black) or in the literature (grey: Guinot and Bouchard, 1998; Bouchard, 2000; Castro et al., 2010; Ng and Castro, 2016) noted. Square: sternal button; circle: pleonal socket; f: functional; nf: non-functional. Figure filled: structure present; figure empty: structure not present.