Mated female Helicoverpa zea bursa copulatrix and spermatophores.

Mated female bursa copulatrix and spermatophores. (a) The internal structure of the mated female bursa copulatrix. With one spermatophore in the corpus bursa, and another two in cervix bursa with the spiral structure attached. (b) The three spermatophores in bursa copulatrix, the largest one (on the left) was in corpus bursa, and the smaller ones were in the cervix bursa. Each spermatophore comprise of a sac-like structure with a spiral duct attached. (c) Copulation of H. zea, the left is male and the right is female. (d) The inner view of copulation, in this case the couple were connected together inseparably. Mating wound are visible from the outside indicated by the white arrows. The darkening at the base of cervix bursa is cause by the sclerotization of endophallus.