Fig. 35
From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)
Spermiogenesis and cleistospermia of Mecolaesthus sp. n. ‘Ecu60’ TEM. A Mid to late spermatid. Note the stout acrosomal filament. B Coiled late spermatid. Note the large accumulation of glycogen and the vesicular area around the anterior part of the axoneme as well as the lamellar centriolar adjunct material. C Detail of a cleistosperm, showing the peN with the nuclear canal in an extension, the vesicular area, the lamellar centriolar adjunct material and the free glycogen within the cytoplasm. D Cleistosperm in the lumen of the deferent duct