Geotrupes
Creators: name: Arriaga-Jiménez, Alfonsina
name: Kohlmann, Bert
name: Cruz-García, Brenda J.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Geotrupidae
Geotrupes

description: Key to the Geotrupes of Oaxaca
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 2 c–f; Sierra Sur (Sierra de Miahuatlán). ................. ............................................. G. lobatus Howden, 1974
– Antennal club yellowish (Figs 1 a–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 6 c–f; mountains in central Mexico (Guerrero, Guanajuato, Jalisco) and mountains of Oaxaca (Mixteca Shield, Sierra Norte, Sierra Sur). ........................................................ G. sallei Jekel, 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 7 c–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 8 c–f; Sierra Sur (Sierra de Miahuatlán). ..................... ................................................. G. pecki Howden, 1974
5 Elytra dull bluish-black (Fig. 9b); aedeagus as in Figs 9 c–f; Sierra Norte (Sierra de Ixtlán, Sierra de Juárez, Sierra Mazateca, and Nudo del Zempoaltépetl). ........... ........................................ G. viridiobscurus Jekel, 1866
– Elytra bright green, blue, or golden-black with reddish-coppery tint (Fig. 1a); aedeagus as in Figs 1 c–f; Mixteca (Sierra de Tlaxiaco). .......................................... ..................................................... G. nuntiatus sp. nov.
description: Published as part of Arriaga-Jiménez, Alfonsina, Kohlmann, Bert & Cruz-García, Brenda J., 2020, A predicted new Geotrupes from the mountains of Oaxaca, Mexico, and a description of the male of Geotrupes lobatus (Coleoptera: Geotrupidae), pp. 493-508 in Acta Entomologica Musei Nationalis Pragae 60 (2) on page 505, DOI: 10.37520/aemnp.2020.032, http://zenodo.org/record/4489640