Taxonomic congruence between external morphology and male and female genitalia characters of members of Rasahus Amyot & Serville (Heteroptera: Reduviidae: Peiratinae)

The occurrence and degree of taxonomie congruence is analyzed between classifications based on the external morphology and male and female genitalia of the genus Rasahus Amyot & Serville, 1843 (Reduviidae) using multivariate analyses. The results demonstrate that a classification based on size differences, and a data set of ratios are incongruent with a classification of a set of characters of the male and the female genitalia. The last two classifications are congruent with each other at a speciesgroup level, e.g., that of the R. scutellaris and R. hamatus group. The classifications are discussed and a generalized phenetic classification is given.