Xenopygus analis (Erichson)

Aballay, Fernando H., Chani-Posse, Mariana R., Ayón, María Rosana, Maldonado, María Belén & Centeno, Néstor D., 2014, An illustrated key to and diagnoses of the species of Staphylinidae (Coleoptera) associated with decaying carcasses in Argentina, Zootaxa 3860 (2), pp. 101-124 : 119-120

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 Widespread from Mexico to Argentina ( Herman 2001; Newton, unpublished database).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).

Figures

FIGURE 13 – 24. Habitus: 13, Philonthus quadraticeps Boheman; 14, P. discoideus (Gravenhorst); 15, P. bicoloristylus Chani- Posse; 16, P. bruchianus Chani-Posse; 17, P. flavolimbatus Erichson; 18, P. bonariensis Bernhauer; 19, P. longicornis Stephens; 20, P. argus Herman; 21, Styngetus viduus (Erichson); 22, Xenopygus analis (Erichson); 23, Nordus elytisi Chatzimanolis; 24, Oligotergus ogloblini Bernhauer.

FIGURE 42 – 49. Abdomen: 42, Platydracus scabrosus; 43, Anotylus sp. Front tarsus: 44, Belonuchus rufipennis; 45, Philonthus longicornis; 46, Xenopygus analis; 47, Styngetus viduus. Femur: 48, Xenopygus analis; 49, Styngetus viduus. Abbreviation: Fe, femur.