Fig. 5 in Phylogenetic and morphological analysis of Gloydius himalayanus (Serpentes, Viperidae, Crotalinae), with the description of a new species

Fig. 5. Principal components analysis of Gloydius himalayanus (Günther, 1864) morphological data. Different analyses represent different combinations of characters and specimens as described in the text, a trade-off required by the presence of missing data. a. More characters, fewer specimens (n = 18). b. Intermediate number of characters and specimens (n = 22). c. More specimens, fewer characters (n = 31). This analysis does not require a priori grouping; hence the symbols are added for interpretation only.