Osoriellus carinicollis ( NOTMAN, 1925 ) Irmler, 2014

Irmler, Ulrich, 2014, The Neotropical species of the genus Osoriellus FAGEL, 1959 (Coleoptera: Staphylinidae: Osoriinae), Beiträge Zur Entomologie = Contributions to Entomology 64 (2), pp. 231-354 : 297-298

Osoriellus carinicollis ( NOTMAN, 1925) new combination ( Figs 104 A-C, 123A)

Osorius carinicollis NOTMAN, 1925: 7

Typ material examined: Guatemala: Alta Vera Paz , Cacao, Trece Aguas, (89°.45' W, 15°24'N), 25.3., female, leg. Barber & Schwarz (holotype in NMNH) .

Further material examined: Mexico: Chiapas, Ruines de Palenque (91°58'W, 17°29'N), nr. Group IV, from stump litter, 7 specimens, 6.4.1974, leg. C. Altieri ( AMNH, UIC) ; Ruines, litter, Berlese sample, 2 specimens, 25.7.1973, leg. J. Reddell ( AMNH) ; Ruines , 2 specimens, 3.4.1974, leg. C. Alteri ( AMNH) ; Veracruz, Cordoba (96°55'W, 18°53'N), 5 specimens, 4.8.1969, leg. J. Peck ( AMNH) ; Paraje Nueve Nacimiento, tropical evergreen forest, Berlese sample, 3 specimens, 7.8.1969, leg. J. Peck ( AMNH) ; Fortin de las Flores (97°00'W, 18°54'N), 5.8.1969, leg. J. Peck ( AMNH) ; Tamaulipas, Rancho del Cielo, Gomes Farias (98°55.50'W, 21°09.56'N), 3 specimens, 4.07.1969, leg. J. Peck ( AMNH) ; Queretaro, 18 mi. E Landa de Matamoros (100°23'W, 20°35'N), pine oak leaf litter, 1760 m elevation, 2 specimens, 14.7.1969, leg. J. Peck ( AMNH) ; Chiapas, Ocosingo, Nahá Selva Lacandona , mixed montane forest litter, 2 specimens, 13.7.2003, leg. R. Anderson ( KNHM) ; Oaxaca, Tlaxiaco (97°40'W, 17°16'S), 7 km S, 2000 m elevation, 1 specimen, 10.10.1990, leg. R. Baranowski ( SMNH) ; Valle Nacional (96°18'W, 17°46'N), 21 km S, 1200 m elevation, 7 specimens, 10.09.1986, leg. R. Baranowski ( SMNH, UIC) ; 24-25 km S, 1300 m elevation, 2 specimens, 14.09.1986, leg. R. Baranowski ( SMNH) ; 23 km SW Valle National, km 76, cloud forest leaf litter, Berlese , 1 specimen, 28.07.1992, leg. R. Anderson ( KNHM) ; Jalapa, 2.3 km S on Coatepec road, forest litter, 1 specimen, 13.7.1992, J.S. Ashe & H. Frania ( KNHM) ; samelocation,but 1.1 km S on Coatepec road, leaf litter in rivine, 1280 m elevation, 1 specimen, 12.7.1992, leg. J.S. Ashe ( KNHM) ; same location, but 2.3 km S on Coatepec road, stream side litter, 1380 m elevation, 1 specimen, 13.7.1992, leg. J.S. Ashe ( KNHM) ; Chichen Itza , 11.9.1952, leg. J. & D. Pallister, C.R. Vose Fund, Explorers club ( AMNH) ; Belize: Orange Walk, Rio Bravo Conservation area , 1 female, 18.4.1996, leg. C.E. Carlton ( UIC) ; Orange Walk, 9 specimens, 25. + 26.4.1996, leg. C. Carlon & V. Moseley, collected by flight intercept trap ( KNHM, UIC) ; 2 specimens, 26.4.1996 and 18.4.1996, leg. C. Carlon & V. Moseley, collected by berlese extraction ( KNHM) ; Alta Verapaz 6 km W Tactic, sifting litter under bushes of road side, tropical montane foest, 1430 m elevation, 3 males, 22.11.1991, leg. R. Baranowski ( SMNH) ; Costa Rica: Puntarenas, Rincon de Osa , female, 14.- 26.7.1969, leg. T. Schuh & J. Crane; Heredia, 3.2 km SE, La Selva, 100 m elevation, flight interc., 2 specimens, 11.3, 24.3.1992, leg. W. Bell ( KNHM) ; Guanacaste, Cacao Biol. Stn. (85°27.0'W, 10°56.0'N), leaf litter, Berlese , 1 specimen, 4.5.1995, leg. R. Anderson ( KNHM) ; Panama: Colon (79°45'W, 9°07'N), Parque Nac. Soberania, Pipeline Rd. km 6.1, flight intercept trap, 7.6.1995, leg. J.S. Ashe ( KNHM) ; Parque Nac. Soberania, Pipeline Rd. , flight intercept trap, 5 specimens, 18.5.1995, 20.05.1995, 23.05.1995, leg. J. Jolly ( KNHM) ; 6.1 km on Pipline Rd. nr. Gamboa , flight intercept trap, 1 specimen, 29.5.1995, leg. J.S. Ashe ( KNHM) ; Parque Nac. Soberania, Pipeline Rd. km 2.0, 1 specimen, 16.5.1995, leg. J.S. Ashe ( KNHM) ; same location, flight intercept trap, 1 specimen, 23.5.1995, leg. J. Jolly & C. Chaboo ( KNHM) ; same location, but km 5.3 (79°45'W, 9°07'N), 40 m elevation, 29.- 31.5.1995, leg. J.S. Ashe ( KNHM) ; Chiriqui, La Fortuna, Hydro Trail (82°14'W, 8°42'N), 1150 m elevation, flight interc., 3 specimens, 31.5.-2.6., 23.5.- 9.6.1995, leg. J.S. Ashe & R. Brooks ( KNHM) ; Panama, Barro Colorado Isd. (79°51'W, 9°11'N), flight interc., 1 specimen, 24.8.1994, leg. D. Banks ( KNHM) ; Ecuador: Pichincha, Tinalandia, Santo Domingo , 16 km E (79°03.39'W, 0°16.53'S), 750 m elevation, flight interc., 2 specimens, 27.3.1999, leg. R.W. Brooks & D. Brzoska ( KNHM) ; Maquipucuna , 50 km NW Quito, 1720 m elevation, flight interc., 1 specimen, 23.12.1991, leg. C.E. Carlton & R. Leschen ( KNHM) ; Mindo , 10.6 km W Mindo Road (78°45.14'W, 0°04.23'S), 1375 m elevation, flight interc., 3 specimens, 29.3.1999, leg. R.W. Brooks & D. Brzoska ( KNHM) ; 45 km NW Quito, Macquipucuna Station , 1600-1650 m elevation, flight interc., 1 specimen, 18.4.- 5.5.1996, leg. P. Hibbs ( KNHM) ; Esmeraldas, Bilsa , flight intercept trap, 1 specimen, 10.5.1996, leg. P. Hibbs ( KNHM) ; Peru: Madre de Dios, Manu National Park, Cocha Salvador, Reserved Zone (71°31.36'W, 12°00.13'S), 310 m elevation, flight interc., 1 specimen, 20.- 21.10.2000, leg. R.W. Brooks ( KNHM) ; Loreto, ort: Teniente Lopez , 1.5 km N (76°06.92'W, 2°35.66'S), fruit fall, 210-240 m elevation, 1 specimen, 17.7.1993, leg. R. Leschen ( KNHM) .

Diagnosis: The dense and deep punctation of the pronotum and the elytra of O. carninicollis is similar as in O. eggersi , but O. carinicollis is smaller and has a digitate protibia. The sides of the pronotum are slightly more evenly convergent to the posterior angles. The elytra of O. carinicollis are slightly longer than wide, but quadrate in O. eggersi . The apical lobe of the aedeagus is smoothly curved to an acute apex, whereas in O. eggersi the apical lobe is thicker and dorsally slightly emarginate. The species seems to be variable in size and shape of the aedeagus. In some specimens the apical lobe is slightly more curved than in others.

Description: Length: 3.0 – 3.5 mm. Colouration: Brown; elytra slightly lighter; legs and antennae yellow.

Head: 0.30 mm long, 0.65 mm wide; eyes slightly prominent; slightly longer than temples; anterior edge of clypeus even; without granules at angles; setiferous punctation dense and deep; interstices between punctures less than one-fourth as wide as diameter of punctures; small areas on vertex and at base of antennae impunctate; surface without microsculpture; shiny.

Antennae with second antennomere oblong, slightly longer than wide; third and fourth antenomeres distinctly shorter and smaller than second; fourth and fifth antennomeres slightly wider than two preceding antennomeres; quadrate; antennomeres 6 to 11 distinctly wider than long.

Pronotum: 0.60 mm long, 0.70 mm wide; widest at anterior edge; slightly convergent to posterior edge; posterior angles obtuse; lateral and posterior margin narrow; in dorsal aspect, lateral margin hardly visible at anterior angles; setiferous punctation as dense and deep as on head; moderately wide midline impunctate; setae pointing posteriad; surface without microsculpture; shiny.

Elytra: 0.80 mm long, 0.70 mm wide; with similar dense and deep setiferous punctation as on pronotum; setae pointing posteriad; in contrast to surface of pronotum, surface with weak coriaceous ground-sculpture and matt.

Abdomen with dense and deep setiferous punctation; setae pointing posteriad; posterior abdominal segments with indistinct impunctate midline.

Protibia: 0.44 mm long. 0.13 mm wide; with 8 spines on outer edge; apical spines inserted on moderately long digits; WLR: 0.60; posterior face sparsely covered by yellow setae.

Aedeagus slender and straight; apical lobe slightly curved; ending in acute apex; few sensillae on inner edge of apical lobe.

Figures

Fig. 103-108: Remaining-species-group: Osoriellustrinitatis (103), O. carinicollis (104), O. sticticus (105), O. acutus (106), O. orbiculatus (107), O. adustus (108); antenna (A), protibia (B), aedeagus in lateral aspect (C); scale bar: 0.1 mm.