Diversity of morphometric characteristics of Eurygaster integriceps in Kurdistan Province

The wheat bug, Eurygaster integriceps (Hemiptera: Scutelleridae), is one of the major wheat pests causing high yield loss in terms of wheat production in the Iran. Morphometric differentiations may explain biogeographic distinctions among populations of a given species.The shape variations of female and male adults were evaluated by 12 morphometric indexes. Sampling was conducted in May and July of 2012 in Kurdistan Province. 30 samples of female adults and 30 samples of male adults were sampled from each of selected areas (sum 600 samples from 10 areas). Results showed that female adults divided to three clusters. Female adults were larger than male adults. Female population collected from Ghorve area had the maximum length (12.11±0.05) and width (7.64±0.03) of body, length (3.3±0.02) and width (7.27±0.02) of pronotum and width of scutellum (5.25±0.02 mm). Results of discriminant analysis (DFA) showed that female adults can differentiate populations (36.7%) more that male adults (32.7%). cluster analysis differentiated female and male populations completely by UPGMA method.