Useful biometric variables in Iberian exuviae of Boyeria irene (Fonscolombe, 1838) (Odonata: Aeshnidae)

In species of similar shape and size, biometric analyses make it possible to establish differences. Within one species, biometrics can help researchers detect differences between populations analyze their adaptations environmental conditions. Until now little was known about the Iberian Boyeria irene (Odonata: Aeshnidae), a large living mainly in southern Europe. Eight variables were studied male female exuviae B. collected three rivers Peninsula, with objective ascertaining which are most suitable this study. An analysis principal components (PCA) shows that lengths epiproct, paraproct prementum influential each populations. The other (head width, body length, length gonapophyses, maximum minimum width prementum) proved not be relevant context.