Osoriellus brevipennis Irmler 2014, new combination
Creators: name: Irmler, Ulrich
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Osoriellus
Osoriellus brevipennis

description: Osoriellus brevipennis (NOTMAN, 1925) new combination
(Figs 76 A-C, 99C)
Osorius brevipennis NOTMAN, 1925: 7
Type material examined: U.S. A: Arizona, Fort Grant, 12.7. without year, leg. Hubbard & Schwarz (holotype in USNHM).
Further material examined: America septentrionalis: syntype to O. latipes (ZMHB); Mexico: Mexico, Real de Arriba, 6300 ft. elevation, 13 specimens, 1.07.1932, leg. H.E. Hinton (AMNH); Mexico, 1 male, leg. Höge, 2 males, 4 females, coll. Kraatz, without more data (SDEI); Nicaragua: Rio San Juan, 60 km SE San Carlos, Refugio Bartola (84°20.30'W, 10°58.40'N), ex. fruitfall, 100 m elevation, 29.5.2002, leg. R. Brooks, Z. Falin, S. Chatzimanolis (UIC); Costa Rica: Prov. San José, La Caja, male, July 1938, leg. A. Bierig (BMNH); nr. Salitral, nr. San José, 1200 m elevation, under rocks at edge of stream, 1 male, 1 female, 14.2.1982 and 4.3.1982, leg. G. Kirby & Speight (BMNH).
Diagnosis: The species is very similar to O. mexicanus and can be differentiated from that species by the microsculpture of the head and the extremely triangular shape of the pronotum.
Description: Length: 5.4 mm. Colouration: Black; legs and antennae reddish; elytra red.
Head: 0.75 mm long, 1.1 mm wide; eyes not prominent; as long as temples; front edge of clypeus even without lateral teeth; setiferous punctures moderately dense; wide impunctate midline; laterally and anteriorly with denser granulate punctation; in particular, on supraocular area with dense granulate, partly striate punctures; at base of antennae with further large impunctate area; surface with dense and distinct isodiametric microsculpture, matt; without microsculpture except impunctate area at base of antennae; surface polished.
Antennae with second and third antennomere nearly similar in length; second antennomere oval; third conical; following antennomeres narrow and quadrate; antennomeres seven to eleven much wider than preceding antennomeres and slightly wider than long.
Pronotum: 1.00 mm long, 1.15 mm wide; widest at anterior edge; evenly convergent to posterior angles; lateral and posterior margin narrow; punctures large and dense; along impunctate midline with row of coriaceous punctures; between coarse punctation with sparse micropunctation; surface without microsculpture; polished.
Elytra: 1.15 mm long, 1.15 mm wide; with moderately deep coriaceous ground-sculpture; punctures large and dense, but slightly smaller than on pronotum; punctures in irregular rows.
Abdomen with dense and deep setiferous punctation; surface with distinct isodiametric microsculpture; matt.
Protibia: 0.79 mm long, 0.29 mm wide; thick, nearly semicircular; with 10 spines on outer edge; WLR: 2.0; in posterior aspect, comb at inner emargination partly covered; posterior face densly coverd by yellow setae.
Aedeagus elongate; apical lobe slender and slightly curved to moderately obtuse apex; one sensilla at inner edge of apical lobe.
description: Published as part of Irmler, Ulrich, 2014, The Neotropical species of the genus Osoriellus FAGEL, 1959 (Coleoptera: Staphylinidae: Osoriinae), pp. 231-354 in Beiträge Zur Entomologie = Contributions to Entomology 64 (2) on pages 261-262, DOI: 10.21248/contrib.entomol.64.2.231-354, http://zenodo.org/record/5461706