Fig. 5From: Structure of a hinge joint with textured sliding surfaces in terrestrial isopods (Crustacea: Isopoda: Oniscidea)Structure of the groove on the dactylus. a Scanning electron micrograph of the base of the dactylus, posterior view. A semicircular groove is visible. b The groove on the dactylus, ventral view. The surface of the groove is completely smooth. Scale bars: 10 μm (a), 5 μm (b)Back to article page