A key to the Mexican genera of Tanymecini (Coleoptera: Curculionidae) Author Cortés-Hernández, Kevin A. Museo de Zoología “ Alfonso L. Herrera ”, Departamento de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), 04510 Mexico City, Mexico. E-mail: forest _ kevin @ hotmail. com, juanmorrone 2001 @ yahoo. com. mx Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México (UNAM), Av. Universidad 3000, 04510 Mexico City, Mexico. Author Morrone, Juan J. Museo de Zoología “ Alfonso L. Herrera ”, Departamento de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México (UNAM), 04510 Mexico City, Mexico. E-mail: forest _ kevin @ hotmail. com, juanmorrone 2001 @ yahoo. com. mx Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México (UNAM), Av. Universidad 3000, 04510 Mexico City, Mexico. text Zootaxa 2019 2019-06-12 4615 1 46 56 journal article 21173 10.11646/zootaxa.4615.1.2 c6f9538f-c3b9-4ea6-a51e-8e04d5d647db 1175-5326 3995308 A92644B1-DA05-438C-B5D6-10C3102FFB3F Key to the Mexican genera of Tanymecini 1 Metatibial apex simple ( figures 1 and 2 )................................................................... 2 1’ Metatibial apex with false or true corbels ( figures 3–6 )........................................................ 6 2 Anterior margin of abdominal ventrites 3–5 flat, not sulcate ( figure 7 ); front legs generally greatly larger than middle and hind legs................................................................................................ 3 2’ Anterior margin of abdominal ventrites 3–5 sulcate across almost entire width of abdomen or medially only (except Isodacrys minutum ) ( figure 8 ); front legs from not at all enlarged to slightly larger than middle and hind legs..................... 4 3 Mandibles on lateral and ventral surface with scales; front coxae contiguous or narrowly separated.......... Hadromeropsis 3’ Mandibles without scales; front coxae distinctly separated................................ Pandeleteius ( Pandeleteius ) 4 Tarsal claws connate............................................................................ Isodrusus 4’ Tarsal claws free...................................................................................... 5 5 Humeri well developed; with postocular vibrissae well developed or reduced to 1–3 hairs.................. Pandeleteinus 5’ Humeri rounded to partially developed ( figure 15 ); with or without postocular vibrissae...................... Isodacrys 6 Metatibial apex with false corbels; humeri well-developed, oblique or quadrate; tarsi 1–3 on ventral surface with pads of setiform setae........................................................................................... 7 6’ Metatibial apex with true corbels; humeri rounded; tarsi 1–3 on ventral surface with stout, spiniform setae instead of pads of setiform setae; apex of hind tibae bearing conical to lameliform bristles, shorter to subequal in length to the surrounding setae.......................................................................................... Minyomerus 7 Dorsal surface of rostrum apicad of antennal insertion elevated in a platform consisting of an apical glabrous portion followed by a squamose portion, with posterior margin ending in a transverse inter-antennal groove; front legs distinctly larger than middle and hind legs; front coxae separated; hind tibia without straight comb of setae on outer edge.................... 8 7’ Dorsal surface of rostrum apicad of antennal insertion not elevated in a platform; front legs not larger than middle and hind legs; front coxae contiguous; hind tibia with straight comb of setae on outer edge, comb at least as long as width of tibia at apex............................................................................................. Tanymecus 8 Rostrum with apical glabrous portion of platform not separated from the squamose portion by a carina ( figure 9 ); vibrissae present....................................................................................... Airosimus 8’ Rostrum with apical glabrous portion of platform separated from the squamose portion by a carina ( figure 10 ); ocular vibrissae absent........................................................................ Pandeleteius ( Exmenetypus )