Indomicrus chera, Jałoszyński, 2020

Jałoszyński, Paweł, 2020, Two new Oriental genera of Cephenniini (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 4718 (3), pp. 423-435 : 431-433

publication ID	https://doi.org/ 10.11646/zootaxa.4718.3.10
publication LSID	lsid:zoobank.org:pub:154D37C6-2958-4B5B-94D8-6836BD52C75B
persistent identifier	https://treatment.plazi.org/id/03BD0B29-0D3B-FF8F-FF3F-FE8AFB7EFDBB
treatment provided by	Plazi
scientific name	Indomicrus chera
status	sp. nov.

Treatment

Indomicrus chera View in CoL sp. n.

( Figs 20–35 View FIGURES 20–22 View FIGURES 23–30 View FIGURES 31–35 )

Type material. Holotype: INDIA (KERALA): ♂, two labels: “INDIA: Kerala / Cardamon hills 15km / SW Munnar,Kallar Vall. / 1000m, 6– 18.12.1993 / D. Boukal & Z. Kejval ” [white, printed], “ INDOMICRUS / chera m. / P. Jałoszyński, 2019 / HOLOTYPUS ” [red, printed] ( MHNG) . Paratype: 1 ♀, “INDE—Kerala / Cardamon Hills 950m / Pambanar—Peermade / Besuchet—Löbl 9.XI.72 ” [white, printed], and standard yellow “ PARATYPUS ” label ( MHNG) .

Diagnosis. As for genus; endophallus in ventral view with conspicuous arcuate component transverse in relation to median elongate tubular structure and a slightly asymmetrical group of several sclerites directed distad.

Description. Body of male ( Figs 20–21 View FIGURES 20–22 ) elongate, strongly convex, dark reddish-brown, setae yellowish; BL 1.14 mm.

Head ( Figs 20–21 View FIGURES 20–22 ) broadest at moderately large, strongly convex eyes, HL 0.11 mm, HW 0.28 mm; frons and vertex confluent and weakly convex. Punctures on vertex and frons distinct, large and deep, densely and unevenly distributed, those on median area distinctly sparser, separated by spaces 1.5–2 × as wide as diameters of punctures, on sides of frons and vertex punctures separated by spaces subequal to their diameters; setae short, sparse and recumbent. Antennae ( Fig. 26 View FIGURES 23–30 ) slender, AnL 0.43 mm; antennomere I only slightly elongate, II about twice as long as broad; III–VII each about as long as broad or barely noticeably broader than long, VIII distinctly transverse, IX slightly transverse, distinctly longer but only slightly broader than VIII, X about as long as broad, much larger than IX, XI about 1.8 × as long as broad, as broad as X and slightly longer than IX–X together.

Pronotum ( Figs 20–21 View FIGURES 20–22 ) broadest near middle; PL 0.38 mm, PW 0.55 mm. Anterior margin weakly convex, anterior corners subtriangular and blunt, weakly obtuse-angled, lateral margins rounded and shallowly microserrate ( Fig. 28 View FIGURES 23–30 ), base arcuate. Pronotal disc slightly flattened near each hind corner, lacking any peculiar structures. Punctures on pronotal disc similar to those on frons and vertex, almost evenly distributed, shallow but sharply marked, separated by spaces 1.5–2 × as wide as diameters of punctures. Basic setae slightly longer than those on frons and vertex, similarly sparse, nearly recumbent, additionally pronotum with four pairs of strikingly long and erect macrosetae: one pair near each hind corner, two lateral pairs near middle of pronotum, and one lateral pair near anterior pronotal margin, behind each eye.

Elytra ( Figs 1–2 View FIGURES 1–3 ) together oval, broadest distinctly in front of middle; EL 0.65 mm, EW 0.55 mm, EI 1.18; hu- meral calli indistinct, humeral denticles well-defined but blunt. Punctures on elytra distinctly larger and sparser than those on pronotum; basic setae similar to those on pronotum, additionally each elytron with over 20 conspicuously long and erect macrosetae distributed all over the surface. Hind wings absent.

Legs moderately long and slender; protibiae ( Fig. 27 View FIGURES 23–30 ) strongly thickened distad, each with apical row of six flattened digitiform projections.

Aedeagus ( Figs 32–35 View FIGURES 31–35 ) elongate; AeL 0.33 mm; median lobe in ventral view drop-shaped, broadest in sub-basal third, in subapical area abruptly narrowing toward subtriangular, pointed apex of dorsal wall of aedeagus, ventrally ostium closed by rounded apical plate not reaching apex of ventral wall; endophallus with elongate median sclerotized structure with broad base, surrounded by group of elongate sclerites directed distad, and with arcuate and darkly sclerotized component transverse in relation to the long axis of aedeagus; each paramere with one apical and two tiny subapical setae.

Female. Externally not distinguishable from male; BL 1.16 mm; HL 0.11 mm, HW 0.28 mm, AnL 0.43 mm; PL 0.38 mm, PW 0.53 mm; EL 0.68 mm, EW 0.55 mm, EI 1.23.

Distribution. Southern India.

Etymology. The name chera (noun in apposition) refers to the Chera dynasty ruling from the second century BCE in the area of Tamilakam (the ancient Tamil country) that includes the present-day Kerala.