Fig. 67
From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)
Spermiogenesis of Quamtana oku. TEM. AÂ Mid spermatid. Note the gaps in the manchette of microtubules. BÂ Late spermatid. The gaps in the manchette of microtubules are prominent at this stage. Note the position of the NC and AF. CÂ Late spermatid. A helical band of nuclear material is present along the nucleus (arrows). DÂ Coiled spermatid. The helical band remains present also after coiling (arrow)