Agonum Carabus marginatus Amolyntus Agonum Agonothorax Agonum Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico Bousquet, Yves ZooKeys 2012 2012-11-28 245 1 1722 8KV2R 07BD7289-9169-C28B-9711-71BB7B6903B8 Bonelli, 1810 Bonelli 1810 Insecta Carabidae Agonum GBIF Animalia Agonum Coleoptera 745 746 Arthropoda genus   AgonumBonelli, 1810: Tabula Synoptica. Type species:  Carabus marginatusLinnaeus, 1758 designated by Curtis (1827: plate 183). Etymology. Uncertain, possibly from the Greek a(without) and gonia(angle), alluding to the rounded posterior angles of the pronotum (" th[ orax] ... angulis baseos rotundatis") of the adult or from the Greek agonos(barren), or from the Greek agon, - os(contest, struggle) [neuter].  AmolyntusGistel, 1848a: viii. Unnecessary replacement name for  AgonumBonelli, 1810.  AgonothoraxMotschulsky, 1850a: 67. Unnecessary replacement name for  AgonumBonelli, 1810.  Diversity. About 130 species (Liebherr and Schmidt 2004: 202-203) in the Nearctic (72 species, one adventive), Neotropical (15 species in Middle America, all but two shared with North America), Palaearctic (63 species, of which seven are Holarctic), and Afrotropical (three endemic species) Regions. The species are arrayed in four subgenera, following Liebherr and Schmidt (2004):  Europhilus,  Platynomicrus,  Agonums.str., and  Olisares, all represented in North America. All other subgenera of  Agonumlisted in Lorenz (2005: 411-412) have been excluded by Liebherr and Schmidt (2004: 152) as most of them "are most likely evolutionary affiliates of the highly diverse and taxonomically confused  Platynus-"  Colpodes" group of genera." About 50 species are left unplaced in Lorenz (2005: 412) and some of them may belong to  Agonum.  Identification. Liebherr (1994) published a key to all species found in the Western Hemisphere as well as a review of the Middle American species. Lindroth (1966, 1969a) covered all North American species except  Agonum anthracinumDejean,  Agonum cyanopisBates,  Agonum elongatulumDejean,  Agonum extimumLiebherr,  Agonum muiriLiebherr,  Agonum pacificumCasey, and  Agonum parextimumLiebherr.