Mikrotrichodactylini Souza-Carvalho, Magalhães, Carvalho & Mantelatto, 2025, trib. nov.

TribeMikrotrichodactylini trib. nov. Type genus. Mikrotrichodactylus Pretzmann, 1968, by present designation. Diagnosis. Carapace: lateral margin devoid of teeth or usually with up to 5 vestigial, small or developed teeth (some species with 1–2 vestigial or developed teeth on posterolateral margin); lower orbital margin: inner corner with distinct sharp or blunt projection. Third maxilliped, meri: distal external spine reduced. Axial skeleton, interosternites: ie 4 / ie 5, ie 5 / ie 6, ie 6 / ie 7 extended mesially, reaching sternum midline as inconspicuous phragma, being ie 6 / ie 7 noticeable low (vestigial in A. constrictus); ie 7 / ie 8 fused to junction plate mesially (see Pedraza et al., 2015: figs. 4 B, 6 B). Pleon: pleonal somites free (except in Avotrichodactylus, with pleonal somites III – V fused). Telson (male): subtriangular or campaniform; anterior margin as broad as or slightly shorter than posterior margin of pleonal somite VI. G 1: simple, straight or more or less bent (in Avotrichodactylus); positioned more or less diagonally in sternopleonal cavity; distal half subcylindrical, with or without distinct lobes on lateral and / or mesial surfaces, or tapering (in Avotrichodactylus); distal opening wide, its apex symmetrical, regularly convex, asymmetrical, with mesodorsally directed projection, or very narrow (in Avotrichodactylus). G 2: longer or shorter (in Avotrichodactylus and Rodriguezia) than G 1. Small-sized species (up to 30 mm CW).