Osorius peruvianus BERNHAUER
Creators: name: Irmler, Ulrich
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Osorius
Osorius peruvianus

description: Osorius peruvianus BERNHAUER,, 1908: 293 (Figs 23 a-d, 38 F)   
 Type material examined:   
 Peru: 1 male, without further information (holotype, FMNH).   
 Additional material examined:   
 Peru: Puerto Maldonado, 15 km NE (69°03' W, 12°33' S), flight intercept trap, 200 m elevation, 2 specimens, 10.7.1989, leg. R. Leschen (KU); 15 km N, Tambopata Prov, ex molassas, 200 m elevation, 2 specimens, 11.7.1989, leg. J.S. Ashe (KU); Madre de Dios, Pantiacolla lodge (71°13' W, 12°39' S), Alto M. d. Dios River, 400 m elevation, 2 specimens, 26.10.2000, leg. R.W. Brooks (KU, UIC); Tingo Maria, Huan, 750 m elevation, 3 specimens, 19.5.1947 and 16.5.1947, leg. J. Pallister (AMNH); Brazil: Espirito Santo (40°12' W, 20°05' S), Conceição da Barra, 1 specimen, 15.10.1972, leg. M. Alvarenga (AMNH); Paraná, Rolandia (51°22' W, 23°18' S), 3 specimen, 19.10.1947 and 15.9.1948, leg. A. Maller (AMNH).   
 Diagnosis:   
 The species is very similar to O. integerinteger with regard to punctation and microsculpture of the fore body. O. peruvianusperuvianus is slightly larger on average than O. integer. It is also similar in size to O. sahlbergi, but pronotal microsculpture is weaker and surface, thus, shinier.   
 Description:   
 Length: 10.8 – 11.5 mm. Colour: black.   
 Head:: 1.5 mm long, 2.4 mm wide; with deep and dense punctation; distance between punctures on average as wide as or shorter than diameter; isodiametric microsculpture dense and deep; surface shiny; lateral angles of clypeus scarcely prominent and widely obtuse; front emargination short and smooth; labrum two times wider than long; scarcely projecting the clypeal emargination; eyes large, scarcely shorter than temples; with numerous striae dorsad to eyes and behind eyes; supraocular striae parallel, postocular ones diagonally pointing ventrad; with numerous granular punctures.   
 AntennaeAntennae relatively thick; with 2 nd antennomere short, wider than long; 3 rd antennomere oval and more or less twice as long as 2 nd; antennomeres 4 and 5 slightly longer than wide; subsequent antennomeres quadrate.   
 Pronotum: 2.1 mm long, 2.6 mm wide; widest at front edge; anterior angles tooth-like prominent; sides continuously narrowed to posterior angels; indistinct emargination shortly in front of posterior angles; lateral margin narrow at anterior angles; distinctly wider at posterior angles; posterior edge margined; punctation and microsculpture distinct and as deep as on head; surface shiny; in posterior half of smooth midline, a short longitudinal depression.   
 Elytra: 2.7 mm long, 2.7 mm wide; with coarse and dense punctation and indistinct coriaceous ground sculpture; surface shiny.   
 Aedeagus pear-shaped with moderately long apical part with obtuse apex and wide distal fold.
description: Published as part of Irmler, Ulrich, 2010, The Neotropical species of the genus Osorius G - M, 1829 with remarks to the Neotropical Osoriid complex (Coleoptera: Staphylinidae: Osoriinae), pp. 363-426 in Beiträge Zur Entomologie = Contributions to Entomology 60 (2) on pages 395-396, DOI: 10.21248/contrib.entomol.60.2.363-426, http://zenodo.org/record/5212736