Fig. 57
From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)
Spermiogenesis of Metagonia cf. petropolis. TEM. A, B Early spermatid. Note the condensation pattern. C Mid to late spermatid. Note the elongated acrosomal vacuole, the peripheral nuclear canal and the gaps in the manchette of microtubules. D Late spermatid. The electron dense material around the centrioles begins to form