Osoriinae of Cuba with description of new species and an identification key (Coleoptera: Staphylinidae) Author Irmler, Ulrich Institute for Ecosystem Research, Dept. Applied Ecology; University of Kiel, Olshausenstrasse 40, 24098 Kiel; uirmler@ecology.uni-kiel.de text Acta Entomologica Musei Nationalis Pragae 2015 2015-06-01 55 1 145 172 journal article 54973 10.5281/zenodo.5302932 a0de0ec1-2ec8-40f0-9b52-23432f22a84f 0374-1036 5302932 1A25F955-E0DD-4B0E-8CBE-9D28FEF72B77 Allotrochus cubensis sp. nov. ( Figs 1A,C,D , 5A ) Type locality. Cuba , Sierra Maestra. Type material. HOLOTYPE : ♂ ( NMPC ): ‘ Cuba , N. Sierra Maestra [~ 20°07′N , 76°33′W ], Oct. 1928 , leg. Dr. Rambousek’ . PARATYPES : 3 ♂♂ 4 ♀♀ ( NMPC , IES , UIC ): with same labels as holotype ; 19 spec. ( NMPC , UIC ): Prov. Granma , La Platica , P.N. Turquino , saddle below La Mariposa, ca. 0.8 km SE La Platica (by air), 1050 m elevation, sifting of leaf litter and decaying wood in the low secondary evergreen forest with rather rich understory ( 76°52.09′W , 20°00.05N ), 24.vi.2012 , leg. Deler-Hernández & M. Fikáček ; 1 spec. ( NMPC ): same region, but La Siguapa ca. 1.5 km SE (by air) ( 76°52.08′W , 20°00.02′N ), 1290 m elevation, sifting of leaf litter in evergreen forest, 25.vi.2012 , leg. Cala-Riquelme ; 7 spec. ( NMPC ): same region, but slope below Pico Naranjo ca. 0.4 km N La Platica (by air) ( 76°53.03′W , 20°00.09′N ), 950 m elevation, sifting of rather dry leaf litter and decaying wood in the secondary bushes with thin litter layer, 24.vi.2012 , leg. Deler-Hernández & M. Fikáček ; 13 spec. ( NMPC , UIC ): same region, but trail to ca. 0.5 km S (by air) from La Platica ( 76°53.03′W , 20°00.05′N ), 950 m elevation, sifting of leaf litter and decaying wood in the secondary forest with many tree ferns and rich understory vegetation, 23.–27.vi.2012 , leg. Deler-Hernández & M. Fikáček. Diagnosis. The species resembles Allotrochus marginatus ( Sharp, 1887 ) in size and punctation. It can be easily differentiated from A. marginatus by the distinctly rectangular shoulders that each carries a shortly prominent tooth. Furthermore, the elytra are wider and shorter in A. cubensis than in A. marginatus . Finally, the parameres are widened to the rectangular apex, whereas the parameral apex is smoothly rounded in A. marginatus . Description. Length: 3.0 mm. Colouration: Light reddish; elytra and base of abdominal segments III–VII darker reddish; legs and antennae dark yellow. Head 0.37 mm long, 0.59 mm wide; small eyes not prominent and as long as temples; lateral margin in sinuate curve from neck to beginning of slightly wider supraocular margin, then evenly rounded in smooth curve to front edge; temples behind eyes with deep netlike microsculpture; vertex with sparse and fine punctation; distance between punctures at least twice as wide as diameter of punctures; between normal punctures with sparse micro-punctation; interstices between punctures partly with extremely weak microsculpture, but surface mostly shiny; with row of supraocular setiferous punctures; on each side, with long seta on line between posterior edge of eyes; interstice between setae nearly 10 times wider than distance of setae to eyes. Antennae nearly as long as head and pronotum combined; first antennomere thick, more or less rectangular, and as long as second and third combined; second antennomere globular; third triangular; antennomeres 4 to 6 more or less quadrate; antennomeres 7 to 10 wider than long and with apical crown of short bristles; all antennomeres with apical setae. Pronotum 0.56 mm long, 0.78 mm wide; widest in anterior half; slightly narrowed to obtusely rounded anterior angles; evenly narrowed to posterior angles; anterior angles slightly prominent; thus, front edge slightly emarginate; lateral margin distinct; beginning at posterior angles and ending at front edge including anterior angles; posterior edge not margined; punctation sparse and fine, still sparser than on head, but slightly deeper; interstices between punctures irregularly wide, but on average more than twice as wide as diameter of punctures; with sparse micro-punctation; surface without microsculpture; polished and shiny; setiferous punctures in lateral margin and at anterior edge. Elytra 0.62 mm long, 0.82 mm wide; with distinct rectangular shoulders and slightly prominent tooth; disc with weak coriaceous ground sculpture and irregularly coarse punctation; punctures on average larger than on pronotum. Abdomen with netlike microsculpture and moderately dense punctation; punctures distinctly coarser than on pronotum and head; tergite X widened to apex and with numerous pores; sternite X with uplifted central part at apex; apical edge of that part emarginate and with long setae. Aedeagus with rectangular central lobe ending in obtuse apex; parameres slightly longer than central lobe; widened to apex; with more or less rectangular angles at apex. Etymology. The specific name refers to the country of Cuba . Distribution. This species is known from Granma and Santiago de Cuba provinces, Cuba , in the Sierra Maestra mountain range.