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 Xenopygus analis (Erichson) ( Figs. 22 , 46 ) Diagnosis . Xenopygus analis can be distinguished by the following characters: head, pronotum and elytra of metallic color; head and pronotum blue to greenish blue, coarsely and sparsely punctuated; elytra blue, finely and densely punctuated; abdomen shiny black with segments 7 and 8 golden-orange; antennal segments 6–10 transverse; disc of pronotum with two dorsal rows of punctures. Length 12.0– 14.5 mm . Distribution. Widespread from Mexico to Argentina ( Herman 2001; Newton, unpublished database ). Bionomics. Species belonging to Xenopygus have been frequently found in carrion, dung and decaying fruits ( Irmler 1982 ; Navarrete-Heredia et al. 2002 ), also in leaf litter in the Eastern Cordillera of Colombia ( Gutiérrez & Chacón 2006 ). Xenopygus analis was reported as predator of both larvae and pupae of Anastrepha spp. ( Diptera : Tephritidae ) ( Navarrete-Heredia et al. 2002 ), also from ant nests ( Gutiérrez & Chacón 2006 ).