Osorius confusus NOTMAN 1925
Creators: name: Irmler, Ulrich
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Osorius
Osorius confusus

description: <i>Osorius confusus</i> NOTMAN, 1925: 10 (Figs 32 a-c, 38 H) <b>Type material examined:</b> <b>Mexico:</b> Omelaca (96°45' W, 18°43' N), 1 male 16.4.1908. leg. F. Knab (holotype, AMNH). <b>Additional material examined:</b> <b>Mexico:</b> Puebla, Santa Lucia, 8 km SW Cuetzalan (97°31' W, 20°01' N) (AMNH), San Luis Potosi (91°37' W, 16°36' N), 4 specimens, 10 mi. E Xititla, 9.1.1952, leg. Creighton and 1 specimen, 24.11.1972, leg. J. Reddell (AMNH, UIC); Castle Ingles, Xilitla, 1 specimen, 7.7.1990, leg. Danoff-Burg (AMNH); Tlilipan, 2 specimens, 8.8.1967, leg. J. Reddell (ANHM, UIC). <b>Diagnosis:</b> The species is most similar to <i>O. sahlbergisahlbergi</i> in size, punctation and microsculpture of head and pronotum. The two species can only be distinctly differentiated by the shape of the aedeagus. Furthermore, in <i>O. sahlbergisahlbergi</i> microsculpture of the pronotum is generally isodiametric, while in <i>O. confusus</i>, sometimes a longitudinally reticulate microsculpture exists. Localities of both <i>O. sahlbergisahlbergi</i> and <i>O. confusus</i> are restricted to South Brazil and Mexico, respectively. <b>Description:</b> <i>Length</i>: 10.0 mm. <i>Colour</i>: black. <i>Head</i>:: 1.40 mm long, 2.10 mm wide; eyes small, 1/3 as long as temples; front margin with obtuse lateral teeth and a smoothly curved central prominence; densely and distinctly punctate; distance between punctures on average as wide as diameter of punctures; with several granular supraocular punctures and striae; surface with distinct netlike microsculpture; slightly shiny. <i>AntennaeAntennae</i> with 2 nd antennomere oval distinctly shorter than conical 3 rd one; antennomeres 4 to 6 longer than wide; subsequent ones more or less quadrate. <i>Pronotum</i>: 1.85 mm long, 2.30 mm wide; widest at anterior edge; anterior angles tooth-like prominent; smoothly narrowed to posterior edge; in front of posterior angels slightly emarginate; lateral margin small at anterior angles and widened distad to posterior angels; midline deeply depressed beginning in anterior third and ending in front of posterior edge; surface with netlike or partly longitudinally reticulate microsculpture; slightly shiny. <i>Elytra</i>: 2.10 mm long, 2.30 mm wide; with coriaceous ground sculpture and weak and sparse punctation. <i>Abdomen</i> without dorsal punctation. <i>Front legslegs</i> with 9 spines at outer edge; apical 4 ones on larger teeth; a row of approximately 10 hairs parallel to outer edge and a second row with few setae at inner side. <i>Aedeagus</i> broad and nearly circular with short apical part; apical part extremely asymmetric pointing to left side; suddenly narrowed in front of acute apex.
description: Published as part of <i>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)</i> on page 382, DOI: 10.21248/contrib.entomol.60.2.363-426, http://zenodo.org/record/5212736
description: {"references": ["NOTMAN, H. 1925: A synoptic review of the beetles of the tribe Osoriini from the Western Proceedings of the United States National Museum 67: 1 - 26."]}