Fig. 4
From: Functional morphology of immature mating in a widow spider
Sperm transfer and storage sites of mated late-subadult (a) and adult (b) L. geometricus females 3D-reconstructed using MicroCT analysis. Dorsal view. Surface view on the left side, transparent view on the right side. Anterior is at the top, posterior is at the bottom. Arrows indicate the fertilization ducts. cd, copulatory duct; spa, anterior spermathecal lobe; spp., posterior spermathecal lobe