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[Reversal of the right-left asymmetry in male genitalia of some Ectobiinae (Blattaria: Blattellidae) and its implications on sclerite homologization and classification, Some Monodontomerinae and Megastigminae (Torymidae) associated with Cynipidae in Spain (Hymenoptera)]

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[Microdontomerus impolitus sp. n. and Liodontomerus centaureae sp. n. are described from cynipid galls on Tragopogon and Centaurea respectively. New host and distributional data are given for M. crassipes Bouček. L. papaveris (Förster), Chalcimerus borceai Steffan & Andriescu and Megastigmus dumicola Bouček, and generic characters of Microdontomerus and Liodontomerus are commented upon., A group of species belonging to the Ectobiinae is described in which the male genitalia show a reversed right-left asymmetry. The aberrant orientation can be explained by the mutation of a developmental gene regulating the right-left asymmetry of the last abdominal sternites. The hypothesis is put forward that similar mutations might also be responsible for the unique arrangement of the phallomere sclerites in the Plectopterinae and Blaberidae. The assumption of a symmetry reversal in the ancestors of these taxa is supported by the study of the muscular connections of the sclerites. As a consequence a new homology concept for the sclerites of Plectopterinae and Blaberidae is proposed.]


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