A predicted new Geotrupes from the mountains of Oaxaca, Mexico, and a description of the male of Geotrupes lobatus (Coleoptera: Geotrupidae) Arriaga-Jiménez, Alfonsina Kohlmann, Bert Cruz-García, Brenda J. Acta Entomologica Musei Nationalis Pragae 2020 2020-09-18 60 2 493 508 4N3G Latreille, 1797 [400,513,189,213] Insecta Geotrupidae Geotrupes Animalia Coleoptera 12 505 Arthropoda genus    1 Antennal club grayish-black ( Fig. 2b); each mandible with a considerably pronounced rounded lobe; legs metallic blue; male protibiae long and rounded with apical teeth spiniform; male profemora with a strong transverse tooth at its base ( Fig. 3b); aedeagus as in Figs 2c–f; Sierra Sur (Sierra de Miahuatlán). ................. .............................................  G. lobatus Howden, 1974  – Antennal club yellowish ( Figs 1a–b) or reddish-brown ( Fig. 6a) to brown; mandibles lacking a pronounced rounded lobe ( Fig. 1a); legs black; male protibiae short and straight with apical teeth flattened; male profemora without a transverse ridge at its base. ...................... 2   2 Dorsally shining; pronotum, scutellum and elytral intervals shining, offen green, golden or blue with coppery reflections ( Figs 1, 7a, 8, 9); elytral intervals convex ( Figs 1, 7, 8); smaller species ( 13–22 mm); males not having profemora ventrally excavated near procoxae. ........................................................................................ 3  – Dorsally opaque; pronotum, scutellum, and frequently elytral intervals finely shagreened; elytral intervals flattened centrally ( Fig. 6a); large species ( 22–26 mm); males having profemora ventrally excavated near procoxae; aedeagus as in Figs 6c–f; mountains in central Mexico( Guerrero, Guanajuato, Jalisco) and mountains of Oaxaca(Mixteca Shield, Sierra Norte, Sierra Sur). ........................................................   G. salleiJekel, 1866   3 Posterior pronotal margin fine but distinct, except in front of scutellum ( Fig. 7a); male mesoventrite with a distinct carina in front of mesocoxae; male procoxa forming a broad saddle-like structure at the point of junction with trochanter; aedeagus as in Figs 7c–f; Sierra Madre Oriental ( Hidalgo, Puebla, Veracruz) and Sierra Norte. ..................   G. nebularum Howden, 1964  – Posterior pronotal margin distinct in front of scutellum ( Figs 1, 8, 9); male mesoventrite with a distinct, projected keel in front of mesocoxae; male procoxa forming a slender saddle-like structure at the point of junction with trochanter. ............................................... 4   4 Elytral striae finely punctate or crenulate except near suture ( Figs 1, 8b); elytra bluish-black, greenish-black, or golden-black sometimes with reddish-coppery tint ( Figs 1, 8b); pronotum punctate laterally ( Figs 1, 8b); Sierra Norte or Mixteca. ............................................... 5  – Elytral striae virtually impunctate, at most vaguely crenulate ( Fig. 8a); elytra black with faint tinge of green or blue on elytron; pronotum generally heavily and grossly punctate ( Fig. 8a); aedeagus like Figs 8c–f; Sierra Sur (Sierra de Miahuatlán). ..................... .................................................   G. pecki Howden, 1974   5 Elytra dull bluish-black ( Fig. 9b); aedeagus as in Figs 9c–f; Sierra Norte (Sierra de Ixtlán, Sierra de Juárez, Sierra Mazateca, and Nudo del Zempoaltépetl). ........... ........................................   G. viridiobscurusJekel, 1866  – Elytra bright green, blue, or golden-black with reddish-coppery tint ( Fig. 1a); aedeagus as in Figs 1c–f; Mixteca (Sierra de Tlaxiaco). .......................................... .....................................................   G. nuntiatus sp. nov.