Fig. 48
From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)
Ultrastructure and 3D surface reconstruction of cleistospermia of Smeringopus cf. roeweri (A, B) Cleistospermia in the lumen of the deferent duct. Note the electron dense filamentous material in the IF. C, D, E, F 3D surface reconstruction of a cleistosperm