Fig. 40
From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)
Spermiogenesis and cleistosperm of Otavaloa cf. piro. TEM. A Late spermatid. B Fully developed centriolar adjunct material. The number of lamellae corresponds to the number of microtubule doublets. C, D Early cleistospermia. Note the shape of the peN and the position of the nuclear canal. E, F Cleistospermia in the lumen of the deferent ducts. The secretion sheath is fully developed and the organization of the centriolar adjunct material becomes apparent. Note the stout acrosomal filament