Cephennomicrus selangorensis, Jałoszyński, 2019

Jałoszyński, Paweł, 2019, Four new Oriental species of the ‘ Cephennomicrus group’ (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 4679 (3), pp. 553-562 : 557-559

Cephennomicrus selangorensis sp. n.

( Figs 3 , 15–18 )

Type material. Holotype: E MALAYSIA (Sarawak): ♂, four labels: " MALAYSIA: Selangor Univ. / Kerbangsan via Bangi , / 30km S Kuala Lumpur / 23 Aug.-2 Sept 1992 / A.D.Austin coll. / flight intercept trap " [white, printed], "F.I.T. / ANIC 1291 / secondary / closed forest" [white, printed], " ANIC / specimen" [green, printed], " CEPHENNOMICRUS / selangorensis m. / P. Jałoszyński, 2019 / HOLOTYPUS " [red, printed] ( ANIC).

Diagnosis. BL 0.83 mm; body covered with very short setae, appears almost asetose, except for several symmetrically distributed macrosetae; head, pronotum and elytra virtually impunctate, glossy; head in males unmodified; pronotal base with two pairs of distinct antebasal pits, lacking transverse groove; aedeagus in ventral view with subtrapezoidal apical portion, endophallus symmetrical, with long median tubular component broadened at base, flanked by a several elongate sclerites directed distolaterad.

Description. Body of male ( Fig. 3 ) stout, strongly convex, uniformly and relatively light brown, except for appendages, which are slightly lighter; setae slightly lighter than cuticle; BL 0.83 mm.

Head broadest at very large, strongly convex and coarsely faceted eyes, HL 0.13 mm, HW 0.25 mm; vertex and frons confluent, unmodified, together weakly, evenly convex; supraantennal tubercles small and weakly elevated, but well-defined. Punctures and setae on vertex and frons indiscernible under magnification 80 ×. Antennae slender, with distinctly delimited dimerous club, AnL 0.38 mm, antennomeres I–II elongate, III–VI each about as long as broad, VII–VII each slightly elongate, IX about as long as broad, X distinctly transverse, XI slightly shorter than IX–X combined, indistinctly elongate.

Pronotum subtrapezoidal, broadest near anterior fourth; PL 0.25 mm, PW 0.35 mm; anterior margin broadly rounded; lateral margins distinctly microserrate, rounded in anterior third, then nearly straight and weakly conver- gent toward obtuse-angled hind corners; posterior margin shallowly bisinuate. Pronotal base with two pairs of dis- tinct lateral pits, inner pair not connected by transverse groove, outer pits about twice as far from posterior margin as inner pits. Pronotal disc virtually impunctate; setae very short and recumbent, but discernible under magnification 40 ×, additionally pronotum with two pars of macrosetae: one seta near each hind corner (in Fig. 3 visible on the right side only) and a pair in front of scutellum.

Elytra together oval, broadest slightly in front of middle; EL 0.45 mm, EW 0.43 mm, EI 1.06; humeral calli small but distinct; subhumeral lines not marked, humeral area delimited from mesal region by rounded, diffuse step-wise ridge; elytral apices separately rounded. Elytra virtually impunctate and asetose, except for two pairs of lateral macrosetae: one just behind humeral denticle and one slightly behind middle (in Fig. 3 visible on the left side only).

Legs moderately long and slender, unmodified.

Aedeagus ( Figs 15–18 ) moderately stout; AeL 0.15 mm; median lobe in ventral view drop-shaped with sub- trapezoidal apical portion, endophallus symmetrical, with long median tubular component broadened at base, in its distal region flanked by several elongate sclerites directed distolaterad; parameres slender, each with two conspicu- ously short apical setae.

Female. Unknown.

Distribution. West Malaysia: southern Selangor.

Etymology. Locotypical, after the state of Selangor.

Remarks. The aedeagus of C. selangorensis is most similar to that of the Australian C. mediorugosus Jałoszyński, 2018 (in distal endophallic structures), and to the West Malaysian C. gentingensis Jałoszyński, 2015 (in general shape of median lobe). However, the endophallic sclerites in both these species are clearly different from those in C. selangorensis .

The label reads "Univ. Kerbangsan via Bangi", which is a misspelling of the Malay name "Universiti Kebang- saan Malaysia ", i.e., the National University of Malaysia, located in the Bandar Baru Bangi township, SE of Kuala Lumpur.

Figures

FIGURES 1–6. Dorsal habitus of holotypes (1–4), head in dorsofrontal view (5), head and pronotum in dorsal view (6). Ce- phennococcus penangensis sp. n. (1); Cephennomicrus matangensis sp. n. (2, 5–6); Cephennomicrus selangorensis sp. n. (3); Trurlia nova sp. n. (4). Abbreviations: abg, antebasal groove; abp, antebasal pit.

FIGURES 15–22. Aedeagus in ventral (15, 17, 19, 21) and lateral (16, 18, 20, 22) views. Cephennomicrus selangorensis sp. n. (15–18); Trurlia nova sp. n. (19–22).