oa Journal of the Entomological Society of Southern Africa - Classification of the females in the genus Pseudagrion (Odonata) based on thoracic structure



The use of genitalia for the classification of insects is based on the necessity for the copulatory organs of the male and the female to correspond to each other. The peculiar type of copulation in Odonata is carried out with the aid of special organs developed in this order of insects. In the Zygoptera, the anal appendages of the male instead of being used for engaging the external genital organs of the female are used for clasping the female on the back at the level of the prothorax, whilst secondary genitalia on the second abdominal segment are used for the purpose of performing the actual fertilization.


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