Fig. 2 a, b in Coevolution of male and female genitalia in stalk-eyed flies (Diptera: Diopsidae)

Fig. 2 a, b Spermathecal ducts with male genital process inserted during mating in Teleopsis spec. A. a Male genital process enters separate spermathecal duct. b Male genital process folded back upon itself next to separate spermathecal duct valve. cod Common oviduct, csd common