Platynus (Agonum), Bonelli, 1810

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 753

Subgenus Agonum Bonelli, 1810

Agonum Bonelli, 1810: Tabula Synoptica. Type species: Carabus marginatus Linnaeus, 1758 designated by Curtis (1827: plate 183).

Megalonychus Chaudoir, 1843a: 418. Type species: Megalonychus madagascariensis Chaudoir, 1843 by monotypy. Synonymy established by Liebherr and Schmidt (2004: 202). Etymology (original). From the Greek prefix megalo - (large) and onychos (claws), alluding to the size of the last tarsomeres (" tarsi sublineares; articulis ... ultimo longissimo ") of the adult [masculine].

Agonocyrthes Motschulsky, 1865: 317. Type species: Agonocyrthes orbicollis Motschulsky, 1865 (= Agonum sinense Csiki, 1931) by original designation. Synonymy established by Liebherr and Schmidt (2004: 202).

Agonopsis Semenov, 1889a: 359 [junior homonym of Agonopsis Gill, 1861]. Type species: Anchomenus humerosus Semenov, 1889 by monotypy. Synonymy established by Liebherr and Schmidt (2004: 202). Etymology. From the generic name Agonum [q.v.] and the Greek suffix - opsis (having the appearance of) [feminine].

Platynopsis Lutshnik, 1915d: 186. Type species: Agonum semenowi Lutshnik, 1915 (= Agonum rugicolle Chaudoir, 1846) by original designation. Synonymy established by Schmidt andLiebherr (2009: 228). Etymology. From the generic name Platynus [q.v.] and the Greek suffix - opsis (having the appearance of) [feminine].

Paragonum Casey, 1920: 123. Type species: Feronia placida Say, 1823 designated by Lindroth (1966: 613). Synonymy established by Ball (1960b: 133). Etymology. From the Greek para (near) and the generic name Agonum [q.v.] [neuter].

Nagonium Habu, 1956c: 166. Type species: Agonum kitanoi Habu, 1956 by original designation. Synonymy established by Liebherr and Schmidt (2004: 202).

Liebherrius Shilenkov [in Kryzhanovskij et al.], 1995: 115. Type species: Anchomenus bicolor Dejean, 1828 by original designation. Synonymy established by Liebherr and Schmidt (2004: 202).

Agonops Bousquet, 2002b: 5. Replacement name for Agonopsis Semenov, 1889. Etymology. From the generic name Agonum [q.v.] and the Greek suffix - ops (having the appearance of) [masculine].

Diversity.

Twenty-nine species in the Nearctic (four species, of which one extends into southern Mexico and one is adventive), Palaearctic (24 species, of which one is Holarctic), and Afrotropical (three species in eastern Africa including Madagascar) Regions.