Sexual dimorphism in the wing morphology of social vespid wasps – a case study on the genus polistes latreille using geometric morphometrics: (Hymenoptera: Vespidae)
Abstract
The variation between the forewings of males and females of three species in the genus Polistes (Hymenoptera) was studied with the help of geometric morphometrics, to determine the extent of sexual dimporphism. Mantel statistics revealed a weak correlation between male and female data sets; however, Goodall’s F-test and canonical variates analyses (using the Integrated Morphometric Package) indicated that there are indeed significant differences between the two sexes. Although visual analysis of the relative warp analysis plots of the two sexes and also CVA analysis plot indicated correlations between sexes of the same species, differences in the position of the clusters (or species) on the plots suggests that sexual dimorphism in wings is present. Results from the thin-plate spline analysis of the mean shape of the male and female data sets revealed which landmarks are responsible for the differences. © 2009 Taylor & Francis Group, LLC.