An illustrated key to and diagnoses of the species of Staphylinidae (Coleoptera) associated with decaying carcasses in Argentina Author Aballay, Fernando H. Author Chani-Posse, Mariana R. Author Ayón, María Rosana Author Maldonado, María Belén Author Centeno, Néstor D. text Zootaxa 2014 3860 2 101 124 journal article 10.11646/zootaxa.3860.2.1 75d1fc6b-8d95-48e6-a52a-1a9ab0ce9fb0 1175-5326 229557 DD34DE75-74F3-42B1-9224-DC3BF9F3CCC7 Eulissus chalybaeus Mannerheim ( Figs. 6 , 33 ) Diagnosis. Eulissus chalybaeus may be recognized among other southern South American Xantholinini by its body large and robust, the head, pronotum, elytra and abdomen of metallic color (blue, green or violet) and the pronotal disc impunctate except near margins. Length 28–35 mm . Distribution. From Mexico to Argentina ( Márquez & Asiain 2002 ). Bionomics. This species has been recorded mainly from dung, traps baited with human feces and detritus of Atta mexicana (Formicidae) ( Márquez & Asiain 2002 ; Navarrete-Heredia et al. 2002 ). Eulissus chalybaeus has been also reported as an active predator of dung-beetles ( Young 2011 ; Noriega & Navarrete-Heredia 2012).