FIGURE 4 in Fine Structure Of The Male Genital Systems, Spermatophores And Unusual Sperm Cells Of Saxidromidae (Acari, Actinotrichida)

FIGURE 4:: TEM micrographs of transversely sectioned progenital chambers of Rhinodromus lootsi (a, d-f) and Bovidromus roussouwi (b, c). (a) – Posterior part of ejaculatory duct with eugenital opening (arrow) and secondary genital opening bordered by progenital lips. Note accessory gland and position of (retracted) genital papillae. Scale bar: 20 µm. (b) – Genital papilla. Note many mitochondria and peculiarly modified cuticle. Scale bar: 5 µm. (c) – Detail showing modified cuticle of genital papilla. Note the thick cuticle consisting mainly of many loosely arranged fibres and thus giving a cushion-like appearance. Scale bar: 1.2 µm. (d) – Progenital chamber and accessory glands. Scale bar: 20 µm. (e) – Accessory gland with branching ducts. The cells contain numerous lipid inclusions. Scale bar: 10 µm. (f) – Detail showing two sections through thin ducts, which are cuticle-lined. Scale bar: 2 µm.