Fig. 60
From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)
Spermiogenesis of Panjange camiguin TEM. AÂ Late spermatid, longitudinal section. The cylindrical acrosomal vacuole as well as the deep IF filled with granular material are well visible. Note the helical band of nuclear material along the precentriolar portion of the nucleus (arrows). BÂ Late spermatid. As soon as the nuclear canal meets the IF, it is shifted to the periphery of the prcN. CÂ Early sperm transfer form. The helical band is also present in the coiled state (arrow)