Fig. 49
From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)
Spermiogenesis and cleistosperm of Stygopholcus skotophilus. TEM. AÂ Early spermatid. BÂ Mid spermatid, cross-section. At this stage, microtubuli are present in the IF. CÂ Late spermatid. Note the heterogenous chromatin condensation pattern. DÂ Cleistosperm in the lumen of the deferent duct. At the end of spermiogenesis, the IF becomes filled with glycogen