The Neotropical species of the genus Osoriellus FAGEL, 1959 (Coleoptera: Staphylinidae: Osoriinae) Irmler, Ulrich Beiträge Zur Entomologie = Contributions to Entomology 2014 2014-12-15 64 2 231 354 75BPD Irmler, 2014 Irmler 2014 [227,420,435,462] Insecta Staphylinidae Osoriellus GBIF Animalia Coleoptera 12 243 Arthropoda species sinuatus sp. nov.  ( Figs 19A-C, 20E)   Type material:  Holotype, male:  Ecuador: Napo Prov. Sacha Lodge( 76°27.32"W, 0°28.15'S),  250 mmelevation, 26.- 28.10.2004, leg. G. de Rougemont( UIC).   Paratypes:  Ecuador: 1 malewith same data as for holotype ( UIC);  Sucumbios Prov. Sacha Lodge( 76°5'W, 0°5'S),  270 melevation, collected by Malaise trap, 4 females, 2 males, 13.-  25.7.1994, 25.7.-  3.8.1994, 3.-  16.8.1994, 3.-  13.7.1994, leg. Hibbs( KNHM); same location ( 76°27'35"W, 0°28'14"S), but flight intercept trap,  270 melevation, male, 21.-  24.5.1999, leg. R. Brooks( KNHM);  Napo, Tena,  500 melevation,  2.3.1987, leg. K.A. Johnson( KNHM);  Jatun Sacha Biol. Stat.(  21 kmE Puerto Napo, lowland rainforest, flight intercept trap, female,  18.7.1994, leg. Levy& Genier( KNHM);  Prov. Napo, Tiputini Res. Stat.( 76°09'W, 0°38'S), flight intercept trap,  220 melevation, 2 males, 1 female, 5.-  25.09.2000, leg. D.J. Inward& K.A. Jackson( BMNH);   Peru: Madre de Dios, Iberia,  500 ftelevation, male,  30.4.1947, leg. J.C. Pallister( AMNH).   Diagnosis: The species can be easily differentiated from all other Neotropical  Osoriellusspeciesby the deeply emarginate sides of the pronotum and the clypeal angles. produced to long acute teeth. In contrast to  O. sinuatoangularisand  O. subsinuatus, the emargination in front of the posterior angles is margined.   Description: Length: 4.8 mm. Colouration: Black; elytra dark red; legs and antennae brown.  Head: 0.60 mmlong, 0.91 mmwide; eyes slightly prominent; sides of fore-head concavely narrowed to front angles; sides of clypeus parallel; front angles of clypeus produced to long teeth; anterior edge between lateral teeth even; setiferous punctation distinct, but weak and moderately dense; area at base of antennae and narrow midline impunctate; supraocular area more coarsely punctate than on vertex; on vertex, interstices between punctures on average as wide as diameter of punctures; netlike microsculpture distinct; surface slightly shiny.  Antennaeslightly shorter than head and half of pronotum combined; second antennomere oblong; longer than wide; third conical antennomere not longer than wide; following antennomeres more or less quadrate; antennomere 4 and 5 not wider than preceding antennomeres; last 5 antennomeres distinctly thicker than preceding antennomeres, but quadrate.  Pronotum: 0.88 mmlong, 0.95 mmwide; widest at anterior angles; anterior angles produced to short acute teeth; sides in anterior half nearly parallel; in posterior half slightly stronger convergent; deeply emarginate in front of posterior angles; lateral margin visible throughout its total length; setiferous punctation moderately dense and punctures much larger than on head; on average, interstices between punctures slightly shorter than diameter of punctures; wide midline impunctate; netlike microsculpture deep and partly isodiametric near anterior edge; surface slightly shiny.  Elytra: 1.08 mmlong, 1.09 mmwide; with weak, but dense ground-sculpture; irregular rows of setiferous punctures distinctly visible.  Abdomenwith dense setiferous punctation; microsculpture weak; on posterior tergites weaker than on anterior tergites; surface on posterior tergites polished and shiny. Protibia: 0.57 mmlong, 0.18 mmwide; nearly semicircular; with 9 spines on outer edge; apical spines not inserted on digits; WLR: 3.5; in posterior aspect, comb at inner emargination partly covered; posterior face covered by long yellow setae.  Aedeaguswith long abruptly curved apical lobe ending in obtuse broad apex; on inner edge with row of sensillae.   Etymology: The specific name derived from the same Latin word meaning emarginate and refers to the emarginate sides of the pronotum. 3447076481 2004-10-28 UIC G. de Rougemont Ecuador 0 -0.46916667 Sacha Lodge 12 243 1 1 Napo Prov. holotype 3447076612 2004-10-28 UIC G. de Rougemont Ecuador -0.46916667 Ecuador 12 243 1 1 Napo paratype 3447076816 1994-07-13 1994-08-16 1994-07-13 KNHM Hibbs Ecuador 270 -0.083333336 Sacha Lodge 1308 -76.083336 12 243 6 4 2 Sucumbios Prov. paratype 3447076827 1999-05-24 1994-08-16 1994-07-13 but flight intercept trap KNHM R. Brooks Ecuador 270 -0.47055554 Sacha Lodge 21 -76.45972 12 243 1 Sucumbios paratype 3447076695 1987-03-02 KNHM K. A. Johnson Ecuador 500 Tena 12 243 1 Napo paratype 3455069302 1994-07-18 flight intercept trap KNHM Levy & Genier Ecuador Jatun Sacha Biol. Stat. 12 243 1 Napo paratype 3455069325 2000-09-25 flight intercept trap BMNH D. J. Inward & K. A. Jackson Ecuador 220 -0.6333333 Prov 1308 -76.15 12 243 1 1 2 Napo paratype 3447076317 1947-04-30 AMNH J. C. Pallister Peru 152 Iberia 12 243 1 Madre de Dios paratype