Fig. 3 a–d in The female reproductive tract of Grallipeza sp. A (Diptera: Micropezidae)-large ventral receptacle substitutes for spermathecae convergently in small and widely separated dipteran clades

Fig. 3 a–d Grallipeza sp. Aventral receptacle. a Same specimen as in Fig. 2. bvr base of ventral receptacle, ce columnar epithelium in ventral vagina wall, sp1 and sp2 vestigial spermatheca 1 and 2, spd1 and spd2 ducts leading to the respective spermatheca, spg spermathecal gland cells. b–d Second specimen. b With DIC, note structured wall of ventral receptacle base. c With focus on right side of the organ. d With focus on left side of the organ. Asterisks indicate spermatozoa in entrance region. All figures to same scale. Bar 100 μm