Antillosorius martini, Irmler, 2015

Irmler, Ulrich, 2015, Osoriinae of Cuba with description of new species and an identification key (Coleoptera: Staphylinidae), Acta Entomologica Musei Nationalis Pragae 55 (1), pp. 145-172 : 147-148

Antillosorius martini sp. nov.

( Figs 4A,E,F , 10A )

Type locality. Cuba, Guantánamo province, El Yunque, 20°12′N, 74°34′W.

Type material. HOLOTYPE: ♂ ( NMPC): Prov. Guantánamo, El Yunque , ca. 2 km W of campismo popular (20°12′N, 74°34′W), ca. 350 m elevation, 11.6.2012, leg. Cala-Riqueme, Deler-Hernández & M. Fikáček.

Diagnosis. Among the other members of the genus, this species can be easily identified by the large prominent eyes.

Description. Length: 5.9 mm. Colouration: Dark brown; margin of pronotum and elytra lighter brown; abdomen reddish; legs and antennae yellow.

Head 0.81 mm long, 1.28 mm wide; eyes thick; strongly prominent; more than twice as long as temples; sides of fore-head convergent; anterior edge of clypeus crenulate and slightly produced in smooth curve; transverse row of short yellow setae and pair of long yellow setae at anterior edge; groups of yellow setae on supraocular area including pair of long yellow setae; pair of long yellow setae on line between anterior edge of eyes; six yellow setae on transverse line between posterior edge of eyes; impunctate; netlike microsculpture deep and dense except on small area at base of antennae; surface slightly shiny.

Antennae nearly as long as head and half of pronotum combined; oval second antennomere twice as long as wide; conical third antennomere still slightly longer than second; following antennomeres slightly increasing in width and each approximately quadrate.

Pronotum 1.09 mm long, 1.26 mm wide; widest at anterior angles; anterior angles slightly produced to short teeth; sides evenly narrowed in smooth curve to posterior angles; slightly emarginate in front of posterior angles; posterior angles obtuse; lateral margin moderately fine; widened to posterior angles; in dorsal aspect visible throughout its total length; punctation weak and sparse; on average, interstices between punctures four to six times as wide as diameter of punctures; pair of punctures with long yellow setae close to anterior edge and at posterior third; anterior setiferous punctures closer to each other than posterior setiferous punctures; extremely weak netlike microsculpture; surface nearly polished and shiny.

Elytra 1.45 mm long, 1.35 mm wide; punctation weak and sparse; hardly visible in weak coriaceous ground-sculpture; surface moderately shiny.

Abdomen with dense setiferous punctation; punctures deeper and denser than on fore-body; netlike microsculpture weak, but more distinct than on pronotum; surface moderately shiny.

Protibia 0.57 mm long, 0.17 mm wide; with eight spines at outer edge; spines not inserted on teeth; comb at inner emargination totally visible in posterior aspect; posterior face with dense setation; anterior face with longitudinal row of setae.

Aedeagus weakly sclerotised; right side of apical lobe soft; apical lobe slightly curved; only one sensilla at inner edge of apical lobe.

Etymology. The specific name was selected to honour the collector, Martin Fikáček (NMPC).

Distribution. Known only from the type locality.

Figures

Figs 1–4: Morphological details of Cuban Osoriinae. 1 – Allotrochus cubensis sp. nov.; 2 – Nacaeus dejectus (Sharp, 1887); 3 – Thoracophorus cubensis sp. nov.; 4 – Antillosorius martini sp. nov. Body parts: A – aedeagus in lateral/ ventral aspect; B – paramere; C – last abdominal tergite; D – last abdominal sternite; E – antenna; F – protibia in posterior aspect. Scale bars: 0.1 mm.

Fig. 10. Head, pronotum and elytra, showing shape, punctation and microsculpture. A – Antillosorius martini sp. nov.; B – A. turquinus (Blackwelder, 1943); C – A. strictus (Blackwelder, 1943); D – A. buscki (Notman, 1925); E – A. manni (Notman, 1925); F – A. socors (Darlington, 1937). Scale bars: 0.5 mm.