Fig. 36 in Evolutionary Morphology Of The Primary Male Reproductive System And Spermatozoa Of Goblin Spiders (Oonopidae; Araneae)

Fig. 36. Characteristics of spermiogenesis of Scaphios yanayacu. A: Early spermatids are characterized by a peculiar chromatin-condensation pattern. B: The acrosomal vacuole of early spermatids possesses an enlarged subacrosomal space. C: In midspermatids the AV is surrounded by electron-dense material. D: Numerous membrane whirls are visible in close association to the elongating nucleus in mid- and late spermatids. E: A multilayered manchette of microtubules surrounds the nucleus for its most part; the AF that runs inside the nuclear canal clearly ends before the axonemal base (inset). F: At the end of spermiogenesis four spermatids fuse completely and arrange in the middle of the voluminous sperm conjugate.