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Fig. 8 | Zoological Letters

Fig. 8

From: Structure of a hinge joint with textured sliding surfaces in terrestrial isopods (Crustacea: Isopoda: Oniscidea)

Fig. 8

Predicted loading of contacting surfaces in the propodus-dactylus joint during locomotion. a During standing and the effective stroke of the pereopod, the process of the propodus pushes against the groove of the dactylus with its smooth surfaces: the convex ventral surface and the concave dorsal surface of its edge. b During the recovery stroke, as the pereopod is lifted off the substrate and repositioned, the propodus supports the dactylus with the patterned surfaces of the propodal process: its convex dorsal surface and its concave ventral surface. The dactylus can be repositioned during this stage as it responds to the roughness of the substrate (blue arrow)

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Zoological Letters

ISSN: 2056-306X

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