Osoriellus majusculus Irmler 2014, n. sp.
Creators
Description
Osoriellus majusculus n. sp.
(Figs 91 A-C, 99F)
Type material: Holotype, male: Peru: Tambopata Prov., Madre de Dios Dept, 15 km NE Puerto Maldonado, Reserva Cuzco Amazónico (69°03'W, 12°22'S), 200 m elevation, collected by flight intercept trap, Plot #Z1 rail 26, male, 16.7.1989, leg. J.S. Ashe & R.A. Leschen, #519 (KNHM).
Diagnosis: O. majusculus is one of the largest species in the O.-s. str.-group. It is characterised by the wide lateral margin at the posterior pronotal angles. In the similarly sized O. parcus the lateral pronotal margin is narrow. A slightly widened lateral pronotal margin is also found in O. fumarius and O. caliginosus, but these species are smaller and the pronotal sides are more deeply sinuate.
Description: Length: 6.7 mm. Colouration: Black; elytra reddish brown; legs dark brown; antennae lighter brown.
Head: 0.91 mm long, 1.40 mm wide; eyes slightly prominent; as long as temples; fore-head deeply emarginate; sides of clypeus nearly parallel; anterior edge of clypeus slightly sinuate with acute angles shortly produced; setiferous punctation sparse and moderately deep; irregular midline and moderately large area at base of antennae impunctate; punctation of clypeus sparser than on vertex; interstices between punctures wider than diameter of punctures; punctation of vertex irregular; on average, interstices between punctures as wide as diameter of punctures; on supraocular area punctation still denser and partly granulate; isodiametric microsculpture dense and distinct; surface matt.
Antennae slightly longer than head; second antennomere oval; third conical and as long as second; antennomeres four to six as wide as third, but quadrate; following antennomeres wider than preceding antennomeres and also quadrate; last antennomere elongate.
Pronotum: 1.40 mm long, 1.53 mm wide; widest near anterior angles; evenly narrowed to posterior angles; slight emargination in posterior half; posterior angles approximately rectangular; lateral margin fine in anterior half, slightly wider in posterior half; shortly in front of posterior angles widened; in dorsal aspect, covered close to anterior angles; setiferous punctation dense and deep with narrow impunctate midline; on average, interstices between punctures slightly wider than diameter of punctures; isodiametric microsculpture deep; surfcae matt.
Elytra: 1.74 mm long, 1.65 mm wide; nearly parallel; setiferous punctation distinct; coriaceous ground-sculpture weak; punctures finer and sparser than on pronotum. Abdomen with dense setiferous punctation; isodiametric microsculpture dense; surface matt.
Protibia: 0.79 mm long, 0.29 mm wide; nearly semicircular; 9 spines on outer edge; apical spines inserted on short digits; WLR: 1.53; in posterior aspect, comb of inner emargination visible throughout its total length; posterior face densely covered by long yellow setae.
Aedeagus angulate in nearly rectangular angle; basal lobe nearly as long as apical lobe; apical lobe thick in basal half; in apical third suddenly narrowed to obtuse apex; row of numerous sensillae on inner edge of apical lobe.
Etymology: The specific word majusculus derived from the same Latin word and means slightly larger. It refers to the relatively large size of the species.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- KNHM
- Event date
- 1989-07-16
- Family
- Staphylinidae
- Genus
- Osoriellus
- Kingdom
- Animalia
- Order
- Coleoptera
- Phylum
- Arthropoda
- Scientific name authorship
- Irmler
- Species
- majusculus
- Taxonomic status
- sp. nov.
- Taxon rank
- species
- Type status
- holotype
- Verbatim event date
- 1989-07-16
- Taxonomic concept label
- Osoriellus majusculus Irmler, 2014