Fig. 46From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)Spermiogenesis of Smeringopus cylindrogaster. TEM. AÂ Mid to late spermatid, cross-section. The IF is filled with microtubules. BÂ Late spermatid. Note that microtubules are still present inside the IF. CÂ Late spermatid, longitudinal section. Note the roundish appearance of the AVBack to article page