Osoriellus coriaceus, 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 : 263

publication ID

https://doi.org/ 10.21248/contrib.entomol.64.2.231-354

DOI

https://doi.org/10.5281/zenodo.5874390

persistent identifier

https://treatment.plazi.org/id/E01A87D0-FFED-FFE4-4DB4-FDBDFBF1FE46

treatment provided by

Felipe

scientific name

Osoriellus coriaceus
status

sp. nov.

Osoriellus coriaceus View in CoL n. sp.

( Figs 51 View Fig A-C, 95F)

Type material: Holotype, male: Brazil: Bahia, Urucuca, Cerro Grande, primary Atlantic forest (39°3.43'W, 14°25.17'S), 120 m elevation, 28.1.1995, leg. D. Agosti ( AMNH). GoogleMaps

Paratypes: Brazil: 4 females with same data as holotype ( AMNH, UIC) GoogleMaps .

Diagnosis: The species can be easily identified by the coriaceous punctation of the head that is unique in the similarly sized species of the Neotropical Osoriellus species.

Description: Length: 3.3 – 3.4 mm. Colouration: Black; legs and antennae reddish.

Head: 0.47 mm long, 0.68 mm wide; eyes slightly longer than temples and slightly prominent; sides of fore-head sinuate; anterior edge of clypeus slightly emarginate and each angle with short granule; setiferous punctation dense, coriaceous and striate; surface matt.

Antennae with second antennomere thick and oval; thicker than three following antennomeres; third antennomere conical and shorter than second; fourth to sixth antennomeres as wide as or slightly wider than third, but approximately quadrate; seventh to eleventh antennomeres much thicker than preceding antennomeres, but only slightly wider than long.

Pronotum: 0.65 mm long, 0.70 mm wide; widest at anterior angels; slightly convergent to smoothly rounded posterior angles; lateral margin narrow; in dorsal aspect, not visible in anterior fourth; setiferous punctation dense; punctures large; on average, interstices between punctures half as wide as diameter of punctures; narrow midline impunctate; without microsculpture; surface polished, but only slightly shiny, because of dense punctation.

Elytra: 0.83 mm long, 0.68 mm wide; with dense and deep ground-sculpture; dense punctation slightly visible in coriaceous ground-sculpture; surface matt.

Abdomen with dense setiferous punctation, but less dense than on elytra; narrow midline impunctate; surface polished and shiny.

Protibia: 0.43 mm long, 0.12 mm wide; at outer edge with 6 long spines; apical spines directly inserted on outer edge; WLR: 3.0; in posterior aspect, comb at inner emargination totally visible; posterior face densely covered by yellow setae.

Aedeagus with smoothly curved apical lobe; apex obtuse.

Etymology: The specific name refers to the dense coriaceous punctation of the head.

UIC

UIC

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Osoriellus

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF