Figure 17 in The morphological and functional variability of pleon-holding mechanisms in selected Eubrachyura (Crustacea: Decapoda)

Figure 17. Pleon-holding mechanism of Grapsidae. a-b: Metopograpsus latifrons (White, 1847), ♂, 29 × 27 mm, Malaysia (ZRC2012.0692). (a) Thoracic sternum without pleon, half-moon-shaped buttons clearly visible. (b) Ventral surface of pleon. c-d: Metopograpsus frontalis Miers, 1880, ♂, 32 × 29 mm, Philippines (ZRC2004.0473). (c) Thoracic sternum without pleon. (d) Ventral surface of pleon. e-f: M. frontalis Miers, 1880, ♀, 29 × 25 mm, Philippines (ZRC2004.0473). (e) Thoracic sternum without pleon. (f) Ventral surface of pleon. A: anterior; B: button; fl: flat surface of P6; G: gonopods; i: intestine; P: posterior; s: setae; sac: sterno-abdominal cavity; so: socket; S5: sternite 5; t: telson; v: vulva. Scale bar = 5 mm.