Avotrichodactylus Pretzmann 1978

GenusAvotrichodactylusPretzmann, 1978 a Trichodactylus (Trichodactylus) — Coifmann 1939: 111 [part]. Trichodactylus (Avotrichodactylus) Pretzmann, 1968: 71. Trichodactylus (Rodriguezia) — Bott 1969: 25 [part]. Avotrichodactylus — Pretzmann 1978 a: 54. — Pretzmann 1980: 661. — Rodríguez 1992: 63. — Villalobos-Hiriart et al. 1993: 284. — Álvarez et al. 1996: 129. — Magalhães and Türkay 1996 a: 67 (in list), 71 (in key), 72. — Sternberg 1997: 57, 58 (text, in fig.). — Álvarez and Villalobos 1997: 416. — Álvarez et al. 2005: 191. — Suárez 2005: 155. — Ng et al. 2008: 188 (in list). — De Grave et al. 2009: 42. — Álvarez et al. 2011: 275. — Magalhães and Türkay 2012: 28. — Rogers et al. 2020: 942 (in key). Trichodactylus — Guinot 1988: 19 [part]. — Morrone and Lopretto 1996: 71 [part]. Type species. Trichodactylus constrictus Pearse, 1911, by monotypy. Diagnosis. Carapace: anterolateral margin with up 2–3 teeth of variable development (vestigial, small or well-developed teeth). Efferent branchial channel: aperture with yugal lateral lobe absent. Pleon: pleonal somites III – V fused. Telson (male): campaniform; anterior margin slightly shorter than posterior margin of pleonal somite VI. G 1: simple, strongly or slightly bent; distal half subcylindrical, distinctly tapering, without lobes on lateral and / or mesial surfaces; distal opening narrow, subcircular, situated terminally. G 2: shorter than G 1, apex tapering. Small-sized species (up to 30 mm CW). Distribution. Atlantic drainage in southern Mexico. Composition. Avotrichodactylus constrictus (Pearse, 1911); Avotrichodactylus bidens (Bott, 1969); Avotrichodactylus oaxensis Rodríguez, 1992.