Fig. 64
From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)
Spermiogenesis of Pholcus spp. AÂ Mid spermatid of P. opilionoides. Note the cylindrical AV. BÂ Mid spermatid of P. opilionoides. Note the prolonged proximal centriole and the IF filled with glycogen. CÂ Mid spermatid of P. guineensis. Note the gaps in the manchette of microtubules (arrows). DÂ Late spermatid of P. opilionoides. The nuclear canal is shifted to the periphery of the prcN as soon as it meets the implantation fossa. EÂ Late spermatid of P. guineensis, longitudinal section. Note the short peN as well as the electron dense material surrounding the distal centriole