Summary boxplots (top whisker–maximum value; lower whisker–minimum value; dark horizontal line–median; box–1st and 3rd quartiles, open circles–data points) comparing ventral and subcaudal scales corrected for size among the species of Prosymna separated by sex: Prosymna angolensis (blue) and Prosymna lisima sp. nov. (red); p-value of non-parametric Wilcoxon test is indicated at bottom of each boxplot. Prosymna confusa sp. nov. is not included due to small sample size.