Fig. 4

Ultrastructure of hind tibia epithelial tissues. a: Epidermis and cuticle of a hind tibia from an adult parthenogenetic female. b–d: Epidermis and cuticle of a hind tibia from an adult oviparous female (b: epithelial cells under the tibial cuticle, c: magnification (× 5) of a scent plaque, d: further magnification (× 10) of a pore canal). e: Hind tibia of a fourth-instar oviparous female. f: Diagram of detailed structures in a scent plaque of an adult oviparous female. Arrows in f indicate pheromone secretion. n: nuclei, v: secretory vesicle, m: cell membrane, en: endocuticle, ex: exocuticle, sp: scent plaque, ts: invaginated tubular structure, ep: epicuticular pore, pc: pore canal, ef: epicuticular filament, ncu: new cuticle