The Neotropical species of the genus Osorius G - M, 1829 with remarks to the Neotropical Osoriid complex (Coleoptera: Staphylinidae: Osoriinae) Irmler, Ulrich Beiträge Zur Entomologie = Contributions to Entomology 2010 2010-12-20 60 2 363 426 6TBRC BERNHAUER BERNHAUER [267,600,176,194] Insecta Staphylinidae Osorius Animalia Coleoptera 28 391 Arthropoda species laevicollis    Typematerial examined:    Bolivia: Lima: Mapiri( 68°09' W, 15°15' S) 1 malewithout further data ( holotype, FMNH).  Additional material examined:    Ecuador: Sucumbios, Sacha Lodge( 76°27' W, 0°28' S), under bark,  270 melevation, 1 specimen,  24.3.1999 and in fruit fall, 1 specimen,  23.3.1999leg. R.W. Brooks( KU);  Esmeraldas, Bilsa, 1 specimen,  5.6.1996, leg. P. Hibbs( KU);   Peru: Loreto, Boqueron del Padre Abad,  470 melevation, 13 specimens,  8.8.1946, leg. F. Woytkowski( AMNH, UIC);  Junin, La Merced, Villa RicaRoad ( 75°18' W, 10°47' S), flight intercept trap,  1450 melevation, 1 specimen,  15.10.1999 and 9.5 kmNE Villa Rica Rd.,  880 melevation, 1 specimen,  15.10.1999, leg. R.W. Brooks( KU);  Madre de Dios, Pantiacollalodge ( 71°16' W, 12°38' S),  8 kmNW El Mirador, under bark,  950 melevation, 1 specimen,  24.10.2000, leg. R.W.Rrooks( KU);  Piura, Divisoria Huan, 1 specimen,  8.8.1946, leg. F. Woytkowski( AMNH);  Ucayali, Aguaytia,  295 melevation, 2 specimens,  15.9.1946, leg. F. Woytkowski( AMNH).   Diagnosis:   O. laevicollisis similar in size to  O. dentatus,  O. costaricensisand  O. sublaevis, but is, on average, slightly larger than these species.The dense microsculpture and matte pronotal surface resembles that of  O. costaricensisand  O. sublaevis, but pronotal punctation is distinctly larger and denser. In contrast to  O. costaricensis, the apex of the aedeagus is extremely acute and long.   Description:  Length: 7.8 mm. Colour: black, legs and antennae reddish brown.  Head:: 1.2 mmlong, 1.5 mmwide; front edge laterad without prominence, but with a wide emargination centrally; punctation dense and moderately deep; on disc, distance between punctures shorter than diameter of punctures; with sparser punctation on clypeus; a small midline and an area above base of antennae impunctate; surface with very weak isodiametric microsculpture; shiny; with several supraocular granular setiferous punctures; with short longitudinal striae at temples behind eyes.  AntennaeAntennaewith 2 ndantennomere short and nearly circular; conical 3 rdantennomere only slightly longer than 2 nd; antennomeres 4 to 10 increasing in width; 4 thantennomere quadrate; 10 thantennomere wider than long; relation length: width 0.77.  Pronotum: 1.4 mmlong, 1.6 mmwide; widest at anterior edge; sides slightly narrowed in anterior half; distad more distinctly narrowed and slightly emarginate in front of posterior, obtusely rounded angles; lateral margin narrow in anterior half, widened to posterior angles; punctation finer and distinctly sparser than on head; distance between punctures two to three times wider than diameter of punctures; a narrow midline impunctate, but with short central groove; surface with isodiametric microsculpture; slightly shiny.  Elytra: 1.7 mmlong, 1.6 mmwide; with deep coriaceous ground sculpture; punctation present, but scarcely visible between deep ground sculpture; in spite of deep ground sculpture, surface shiny.  Abdomenwith very sparse and fine punctation and weak, netlike microsculpture; surface shiny; tergites without setae.  Front tibiatibiaat outer edge with 9 spines; apical three ones inserting on short teeth.  AedeagusAedeagusoval in shape with extremely short apical part suddenly narrowed in front of acute apex. [190,1137,274,298] FMNH Bolivia -15.25 Lima 1285 -68.15 Mapiri 28 391 1 1 holotype 1999-03-24 Ecuador 270 -0.46666667 Sacha Lodge 1308 -76.45 28 391 1 Sucumbios [292,884,393,415] 1999-03-23 KU R. W. Brooks Ecuador 28 391 1 Sucumbios 1996-06-05 KU P. Hibbs Ecuador Bilsa 28 391 1 Esmeraldas 1946-08-08 AMNH, UIC F. Woytkowski Peru 470 Boqueron del Padre Abad 28 391 13 Loreto 1999-10-15 La Merced Peru 1450 -10.783334 Villa Rica 1297 -75.3 28 391 1 Junin 1999-10-15 KU R. W. Brooks Peru 880 Villa Rica Rd. 28 391 1 Junin 2000-10-24 KU Pantiacolla & R. W. Rrooks Peru 950 -12.633333 8 km NW El Mirador 1293 -71.26667 28 391 1 Madre de Dios [254,992,565,588] 1946-08-08 AMNH F. Woytkowski Peru Divisoria Huan 28 391 1 Piura 1946-09-15 AMNH F. Woytkowski Peru 295 Aguaytia 28 391 2 Ucayali