Fig. 58
From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)
Ultrastructure and 3D surface reconstruction of the cleistospermia of Metagonia cf. petropolis. A, B Cleistospermia in the lumen of the deferent duct, cross-section. Note the electron dense material in “water wheel” configuration and the central nuclear canal within the prcN. C, D, E, F 3D surface reconstruction of a cleistosperm