“…The morphology of the male reproductive system of Brachyura has been described for several species: Libinia emarginata Leach, 1815 (Hinsch & Walker, ) , Chionoecetes opilio (O. Fabricius, 1788) (Benhalima & Moriyasu, ; Sainte‐Marie & Sainte‐Marie, ) , Telmessus cheiragonus (Tilesius, 1812) , Goniopsis cruentata (Latreille, 1803) , Ucides cordatus (Linnaeus, 1763) , Eriphia verrucosa (Forskal, 1775) , Armases rubripes (Rathbun, 1897) , Maja brachydactyla Balss, 1922 , Libinia spinosa H. Milne Edwards, 1834 , Portunus pelagicus Rathbun, 1902, and Cardisoma Guanhumi (Latreille, 1828), Ovalipes trimaculatus (De Haan, 1833) and Eriocheir sinensis H. Milne Edwards, 1853 (Castilho et al., ; Erkan, Tunali, Balkis, & Oliveira, ; Garcia & Silva, ; Nagao & Munehara, ; Sal Moyano, Gavio, & Cuartas, ; Santos, Lima, Nascimento, Sales, & Oshiro, ; Shinozaki‐Mendes, Silva, & Hazin, ; Simeó, Ribes, & Rotllant, ; Stewart et al., ; Vallina, Sal Moyano, Cuartas, & Gavio, ; Wang, Sun, He, Li, & Wang, ; respectively). While there are important studies on the male reproductive system, the number of these studies is still much lower than those focused of the female reproductive system.…”