Figure 8 in The morphological and functional variability of pleon-holding mechanisms in selected Eubrachyura (Crustacea: Decapoda)

Figure 8. Pleon-holding mechanism of Potamidae. a-b: Potamon mesopotamicum Brandis, Storch & Türkay, 1998, ♂, 49 × 40 mm (ZMK3507). Scale bar = 2 mm. (a) Thoracic sternum without pleon. Large button structure visible slightly of midline of sternite, closer to suture S5/S6. (b) Ventral surface of pleon. c,-d: P. mesopotanicum, ♀, 48 × 40 mm (ZMK3507). (c) Thoracic sternum without pleon. Scale bar = 2 mm. (d) 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.