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Muscles of the genital appendages of Megalopygidae (Lepidoptera) and their significance for the family systematics

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Abstract

Nine muscles were found in the genital complex of Megalopygidae: the paired m1, m2(10), m4, m5(7), m6(5), m7(6), the unpaired m20, m21, and the phallobase muscles. This arrangement corresponds to the ground plan of Zygaenoidea with some reductions. The archaic muscles of the “musculi phallici internus” system, located inside the phallotheca and aedeagus, were revealed for the first time in representatives of the entire superfamily Zygaenoidea. We suggest that the traditional interpretation of m21 as the inner longitudinal muscle of the aedeagus should be preserved, while the inner muscles of the phallotheca should be designated as musculi phallobasi interni m36. Division of the family into two subfamilies, Megalopyginae and the more archaic Trosiinae, is supported by our results, and the homology of the modified appendages of the tergal complex and vinculum is refined. A list of autapomorphies of the family is given.

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Correspondence to V. V. Zolotuhin.

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Original Russian Text © Ju.S. Volkova, V.V. Zolotuhin, P.A. Kurshakov, 2017, published in Zoologicheskii Zhurnal, 2017, Vol. 96, No. 10, pp. 1213–1220.

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Volkova, J.S., Zolotuhin, V.V. & Kurshakov, P.A. Muscles of the genital appendages of Megalopygidae (Lepidoptera) and their significance for the family systematics. Entmol. Rev. 97, 863–869 (2017). https://doi.org/10.1134/S001387381707003X

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  • DOI: https://doi.org/10.1134/S001387381707003X

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