Genital Morphology and Copulatory Mechanism inZygaena trifolii(Esper, 1783) (Insecta, Lepidoptera, Zygaenidae)

Autor: Harald Fänger, Clas M. Naumann
Rok vydání: 1998
Předmět:
Zdroj: Acta Zoologica. 79:9-24
ISSN: 1463-6395
0001-7272
Popis: The coremata and male genital structures together with the associated muscles of Zygaena trifolii are described and illustrated in detail. Of the female genitalia only the external parts are dealt with. The closure of the male coremata pouch was found to be effected by a special muscle. Mating pairs were quickly fixed while in copula and dissected afterwards in order to examine the mechanism of copulation. It turns out that the female is held by the male at three points: first, the gonopods (= valvae) grip the female abdominal tip laterally. Secondly, the praephallus together with the everted endotheca (= vesica) are tightly locked inside the female ductus bursae. Thirdly, female postvaginal structures become evaginated and are then held between the spined anellus and the eighth abdominal tergum of the male.
Databáze: OpenAIRE