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Table 2 Sizes and ridge patterns of propodal processes in different isopod species

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

Species Number of specimens/number of measurements per specimen Suborder Radius of the propodal process Spatial frequency of ridges on the propodal process (mean ± standard deviation)
Cylisticus convexus 2/10 Oniscidea 35 μm 780 ± 115 nm
Ligidium hypnorum 2/10 Oniscidea 25 μm 400 ± 90 nm
Porcellio scaber 4/10 Oniscidea 40 μm 610 ± 150 nm
Titanethes albus 2/10 Oniscidea 40 μm 450 ± 90 nm
Sphaeroma serratum 1/15 Sphaeromatidea 130 μm 450 ± 50 nm