Fig. 52From: Evolutionary morphology of sperm in pholcid spiders (Pholcidae, Synspermiata)Spermiogenesis in Belisana cf. kinabalu. TEM. A, B Late spermatids, longitudinal sections. The prominent helical band (A, arrows) is well visible. C Coiled spermatid, note the electron dense material in “water wheel” configuration. D Coiled spermatid, cross section. Note the helical band (arrow)Back to article page