Fig. 55
From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)
Spermiogenesis of Leptopholcus guineensis. TEM. A Early spermatid. The adjacent position of the two centrioles is well visible. B Mid to late spermatid. Note the helical band of nuclear material on the nuclear surface (arrows). C Coiled spermatid, cross-section. Note the thin peN. D Detail of the anterior part of the axoneme. The electron dense material in “water wheel” configuration, surrounding the centrioles and the most anterior part of the axoneme, is well visible. E Early Cleistosperm in the distal testis lumen. Note the presence of the helical band (arrows)