Avotrichodactylus;Rodriguezia;Trichodactylus Pretzmann 1978

TribeTrichodactylini Pretzmann, 1978 b Trichodactylini Pretzmann, 1978 b: 169. — Pretzmann, 1983 b: 318. Type genus. Trichodactylus Latreille, 1828, designated by Pretzmann (1978 b). Diagnosis. Carapace: lateral margin devoid of teeth or with vestigial, reduced or developed teeth (usually up to 3 on anterolateral margin; posterolateral margin rarely with 1–2 vestigial teeth); lower orbital margin: inner corner with blunt projection sometimes absent. Efferent branchial channel: aperture with yugal lateral lobe absent. Third maxilliped, meri: distal external spine triangular, acute. Axial skeleton, interosternites: ie 4 / ie 5, ie 5 / ie 6, ie 6 / ie 7 extended mesially, reaching sternum midline as conspicuously elevated phragma; ie 7 / ie 8 interrupted mesially, not extended to sternum midline (see Magalhães and Türkay, 1996 a: fig. 7; Pedraza et al., 2015: figs. 3 A, 5 A); ie 7 / ie 8 separated from junction plate mesially (see Pedraza et al., 2015: figs. 4 A, 6 A). Pleon: pleonal somites free. Telson (male): subtriangular; anterior margin as broad as posterior margin of pleonal somite VI. G 1: simple, straight; positioned longitudinally in sternopleonal cavity; distal half subcylindrical, with lateral and mesial surfaces straight or slightly convex; distal opening wide, V-shaped, directed ventrally, apex usually regularly convex or slightly angled. G 2: longer than G 1. Large-sized species (up to 50 mm CW).