Cephennula micropunctata, Jałoszyński, Paweł, 2011

Jałoszyński, Paweł, 2011, Ten new species of Cephennula Jałoszyński (Coleoptera, Staphylinidae, Scydmaeninae) from Malaysia, Zootaxa 3113, pp. 36-52 : 51-52

Cephennula micropunctata sp. n.

( Figs. 12 , 31, 32 )

Holotype: W MALAYSIA: 3, two labels: "W. Malaysia: Pahang \ Batu caves N Kuala \ Lumpur, 31.3.1993 \ Löbl & Calame, nr 24" [white, printed]; " CEPHENNULA \ micropunctata m. \ det. P. Jałoszyński, 2011 \ HOLOTY- PUS" [red, printed] ( MHNG).

Diagnosis. Body between 0.7 and 0.8 mm in length; antennal club strongly flattened and compact; head covered with small and unevenly distributed punctures, those on sides of frons and vertex separated by spaces 0.5– 2 x as wide as puncture diameter, punctures on median part of frons sparser; median part of pronotum with small punctures separated by spaces 1– 3 x as wide as puncture diameter; sublateral pronotal carinae as long as pronotum; antebasal pronotal groove with small median fovea; subhumeral carinae slightly longer than 1/ 3x EL and much longer than humeral carinae; aedeagus in ventral view approximately bottle-shaped, very slender, with strongly broadened apex and rounded apical margin with distinct median point; endophallus indistinct, bell-shaped.

Description. Body of male ( Fig. 12 ) strongly convex, elongate, with shallow but distinct constriction between pronotum and elytra, moderately glossy, light brown, covered with yellowish vestiture, legs and antennae slightly lighter. BL 0.76–0.78 mm.

Head broadest at large, coarsely faceted and strongly convex eyes, HL 0.08 mm, HW 0.20 mm; vertex and frontoclypeal area convex; supraantennal tubercles barely marked. Punctures on dorsum of head unevenly distributed, small but deep and distinct, on sides of vertex and frons dense, on median part of frons and clypeus distinctly sparser; setae short and sparse, suberect. Antennae with strongly enlarged, strongly flattened and compactly assembled antennomeres X–XI and moderately enlarged antennomere IX, so that club appears two-segmented, AnL 0.28 mm; antennomere I about 1.2x as long as broad; II 2.2x as long as broad; III 1.1x as long as broad; IV–VIII subequal in length and width, each about 1.2x as long as broad; IX slightly longer and distinctly broader than VIII, about as long as broad; X much longer and broader than IX, distinctly transverse; XI slightly narrower than X, 1.5x as long as broad.

Pronotum approximately semielliptical, broadest between middle and anterior 1/3; PL 0.25 mm, PW 0.34 mm, anterior margin weakly rounded; lateral margins distinctly microserrate, strongly rounded in anterior 1/3 and feebly rounded in posterior half, slightly convergent towards sharp and acute hind angles; posterior margin very weakly bisinuate; sublateral carinae as long as pronotum. Transverse ante-basal groove shallow but sharply marked and slightly arcuate, with shallow and small median fovea; sublateral ante-basal foveae small and shallow; lateral antebasal foveae slightly deeper and larger. Punctures on median part of pronotum slightly smaller than those on head, shallow but distinct, separated by spaces 1– 3 x as wide as puncture diameter, punctures between sublateral pronotal carinae and lateral margin of pronotum distinctly larger and denser than those in middle, nearly adjacent to each other but not coarse; setae sparse, moderately long, suberect.

Elytra strongly convex, oval, broadest in anterior 1/3; EL 0.44–0.45 mm, EW 0.35–0.38 mm, EI 1.20–1.25; base of each elytron with rudimentary basal fovea located slightly closer to scutellum than to base of humeral carina; subhumeral carinae distinct, slightly longer than 1/ 3x EL; humeral carinae less distinct, only as long as about 1/ 6x EL. Punctures on elytra much smaller than those on head and pronotum, fine and shallow but relatively distinct, sparse; setae similar as those on pronotum.

Legs moderately long and slender; pro- and mesotibiae nearly straight, metatibiae slightly curved.

Aedeagus ( Figs. 31, 32 ) in ventral view approximately bottle-shaped with broad, subtrapezoidal apex strongly expanded laterally and with rounded apical margin with clearly marked median point; AeL 0.18 mm. Endophallus lightly pigmented, with median bell-shaped structure; parameres slender and very short, each bearing two apical setae.

Female. Unknown.

Distribution. West Malaysia (Pahang).

Etymology. The specific epithet “ micropunctata ” refers to small punctures on the head and pronotum of this species.

Figures

FIGURES 8 – 12. Habitus of males. 8 ― Cephennula titiwangsana sp. n.; 9 ― Cephennula medioglabra sp. n.; 10 ― Cephennula sibugana sp. n.; 11 ― Cephennula gombakiana sp. n.; 12 ― Cephennula micropunctata sp. n. Scale bars: 0.2 mm.

FIGURES 25 – 32. Aedeagus in ventral (25, 27, 29, 31) and lateral (26, 28, 30, 32) views. 25, 26 ― Cephennula medioglabra sp. n.; 27, 28 ― Cephennula sibugana sp. n.; 29, 30 ― Cephennula gombakiana sp. n.; 31, 32 ― Cephennula micropunctata sp. n. Scale bars: 0.05 mm.