Octavius sarkae ntsubane, Janák, 2014

Janák, JiĜí, 2014, New species and subspecies of Octavius from South Africa, with a key and additional distribution records (Coleoptera: Staphylinidae: Euaesthetinae), Acta Entomologica Musei Nationalis Pragae 54 (1), pp. 195-231 : 219-220

publication ID	https://doi.org/ 10.5281/zenodo.5299545
publication LSID	lsid:zoobank.org:pub:D94600BD-1221-47B6-9C70-BA8C82B74CEC
DOI	https://doi.org/10.5281/zenodo.5307032
persistent identifier	https://treatment.plazi.org/id/03CD1A4E-FFC1-FE16-BBE8-FCF8A14EFD89
treatment provided by	Marcus
scientific name	Octavius sarkae ntsubane
status	sp. nov.

Treatment

Octavius sarkae ntsubane View in CoL sp. nov.

( Figs 50, 53 View Figs , 60 View Fig )

Type locality. South Africa, Eastern Cape Province, Ntsubane Forest, 31°27ƍS, 29°44ƍE.

Type material. HOLOTYPE: 3: ‘ SOUTH AFRICA,[Eastern Cape Province]: Transkei, Ntsubane Forest Station , 31.27 S – 29.44 E, forest floor litter, 1.xii.1988, E-Y: 2593, leg. Endrödy-Younga // Octavius sarkae ntsubane ssp. n., J. Janák det. 2013’ ( TMSA) GoogleMaps . PARATYPES: 243317 ♀♀: same data as holotype (28 spec. in TMSA, 13 spec. in JJRC), 1 3, 2 ♀♀: same data as holotype, but ‘ 26.xi.1988, E-Y: 2582’ (2 spec. in TMSA, 1 spec. in JJRC).

Description. In most external characters very similar to O. sarkae sp. nov., but eyes on average slightly larger (length temples – eyes R 1.04–1.50, M 1.31, HT 1.48) and coarsely reticulate and wrinkled (not distinctly granulate) surface between anterior margin and transverse impression on pronotum.

Other measurements: body length 1.5–2.1 mm (M 1.8 mm, HT 1.6 mm), forebody length 0.75–0.85 mm (M 0.8 mm, HT 0.8 mm); width head – pronotum R 0.85–0.91, M 0.88, HT 0.86; pronotum width – length R 1.09–1.16, M 1.13, HT 1.16; elytra width – length R 1.46–1.55, M 1.50, HT 1.55.

Male. Sternite 8 and 9 as in O. sarkae sp. nov. Aedeagus similar as in the nominotypical subspecies of O. sarkae sp. nov., but slightly smaller (n = 5, length 0.39–0.42 mm, M 0.41 mm, HT 0.39 mm) apical portion of internal sclerotised plate of aedeagus ¿shtail-shaped and median lobe apically without ventral ridge ( Figs 50, 53 View Figs ).

Differential diagnosis. Octavius sarkae ntsubane subsp. nov. differs from the nominotypical subspecies of O. sarkae sp. nov. and O. sarkae xhosa subsp. nov. by the aedeagus, which is characterised by the apical portion of the internal sclerotised plate ¿shtail-shaped, not rounded or hook-shaped, and by the median lobe without ventral ridge apically. O. sarkae ntsubane ssp. nov. can be distinguished externally (sometimes with dif¿culties) from the nominotypical subspecies of O. sarkae sp. nov. and O. sarkae xhosa subsp. nov. by the coarsely reticulate and wrinkled (not distinctly granulate) surface between anterior margin and transverse impression on pronotum.

Etymology. This species is named after the type locality (Ntsubane Forest). Noun in apposition.

Bionomics. All specimens have been found in siftings of forest litter in indigenous forest.

Distribution. Octavius sarkae ntsubane subsp. nov. has been currently recorded only from Ntsubane Forest in Eastern Cape Province, South Africa ( Fig. 60 View Fig ).