Figure 24 in The morphological and functional variability of pleon-holding mechanisms in selected Eubrachyura (Crustacea: Decapoda)

Figure 24. Pleon-holding mechanism of Sesarmidae. a-c: Metasesarma obesum (Dana, 1851), ♂, 14 × 12 mm, Nikobar Islands (ZMK, uncatalogued). (a) Complete specimen in ventral view. (b) Same specimen, both pleon segment 6 and telson virtually removed. (c) Specimen on its back, view from posterior. Telson inside sterno-abdominal cavity, arrow indicates overhanging edge. d-e: Parasesarma plicatum (Latreille, 1803), ♂, 21 × 18 mm, Hongkong (ZMK1507). (d) Specimen in ventral view, both pleon segment 6 and telson highlighted. (e) Both pleon segment 6 and telson removed, sharp edge on 4 marked red. Orange: telson; red: sharp edge of sterno-abdominal cavity; yellow: pleon segment 6. Scale bar = 5 mm.