Figure 12 in The morphological and functional variability of pleon-holding mechanisms in selected Eubrachyura (Crustacea: Decapoda)

Figure 12. Pleon-holding mechanism of Trichodactylidae. a-b: Goyazana castelnaui (H. Milne Edwards, 1853), ♂, 26 × 21 mm, Brazil (ZRC2010.0410). (a) Thoracic sternum without pleon. (b) Ventral surface of pleon. c-d: 3D reconstruction of Dilocarcinus pagei Stimpson, 1861, ♂, 29 × 23 mm, Paraguay (ZMB15427) from µCT images. (c) Complete specimen in three-quarter view, pleon not firmly attached. (d) Same specimen, telson and pleon segments 6–4 removed. Sternal buttons (arrow) visible inside sterno-abdominal cavity. Inset: Ventral surface of right side of pleon, socket indicated by arrow. A: anterior; B: button; G: gonopods; i: intestine; P: posterior; sac: sterno-abdominal cavity; so: socket; S5: sternite 5; t: telson. Orange: telson; red: buttons; yellow: pleon segments. Scale bar = 5 mm.