Osoriellus multipunctatus Irmler 2014, n. sp.
Creators: name: Irmler, Ulrich
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Osoriellus
Osoriellus multipunctatus

description: Osoriellus multipunctatus n. sp.
(Figs 87 A-C, 101C)
Type material: Holotype, male: Ecuador: Pichincha, Mindo, 10.6 km W. Mindo Road (78°45.14'W, 0°04.23'S), 1375 m elevation, 26.- 29.3.1999, leg. R. Brooks, D. Brzoska, #ECU1899065, ex. flight intercept trap (KNHM).
Paratype: Bolivia: Cochabamba, Cochabamba, 109 km E Yungas (Cochabamba-Villa Tunari Rd.) (65°42.54'W, 17°08.52'S), flight intercept trap, female, 8.- 12.2.1999, leg. F. Genier, #BOL1G99060 (UIC).
Diagnosis: The species can be differentiated from the other similarily sized species by the large prominent eyes and the densely punctate pronotum. It closely resembles O. triangulatus. But the eyes in O. triangulatus are not prominent, the punctation of the pronotum is less dense and the shape of the body is more slender than in O. multipunctatus.
Description: Length: 4.8 mm. Colouration: Dark brown, legs and antennae lighter brown.
Head: 0.57 mm long, 0.97 mm wide; eyes large; twice as long as temples; sides of fore-head strongly convergent; anterior edge of clypeus only half as wide as interstice between eyes; anterior edge of clypeus even; setiferous punctation coarse and dense; on average, interstices between punctures less than half as wide as diameter of punctures; short central area on posterior vertex and at base of antennae impunctate; netlike microsculpture dense and distinct; surface slightly shiny.
Antennae longer than head and half of pronotum combined; second antennomere oblong; third conical and as long as second; fourth antennomere slightly longer than wide; following antennomeres increasing in width, but all quadrate.
Pronotum: 0.90 mm long, 0.99 mm wide; widest shortly behind anterior angles; anterior angles produced to extremely short acute granules; sides evenly convergent to widely ronded posterior angles; lateral margin fine; in dorsal aspect, visible throughout its total length; setiferous punctation coarse and dense, but not coriaceous; on average, interstices between punctures less than half as wide as diameter of punctures; wide midline impunctate; between setiferous punctures with sparse micro-punctation; netlike microsculpture weaker than on head; surface slightly shiny.
Elytra: 1.13 mm long, 1.09 mm wide; with dense coriaceous ground-sculpture; dense setiferous punctation nearly invisible in ground-sculpture.
Abdomen with moderately dense setiferous punctation; netlike microsculpture still weaker than on pronotum; surface moderately shiny.
Protibia: 0.58 mm long, 0.18 mm wide; 9 spines on outer edge; WLR: 1.70; in posterior aspect, comb at inner emargination shortly covered in central part; posterior face densely coverd by yellow setae.
Aedeagus with moderately thick apical lobe ending in obtuse apex; seven sensillae at inner edge of apical lobe.
Etymology: The specific word is a combination of the Latin words multi meaning many and punctatus meaning punctate and refers to the densely punctate pronotum.
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 279-280, DOI: 10.21248/contrib.entomol.64.2.231-354, http://zenodo.org/record/5461706