Cephennodes (Cephennodes) elevatus, Jałoszyński, Paweł, 2015

Jałoszyński, Paweł, 2015, The Cephenniini of China. VI. New species and new records of Cephennodes Reitter from Hainan, Guangxi and Guangdong (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 3990 (2), pp. 221-234 : 230-231

Cephennodes (Cephennodes) elevatus sp. n.

( Figs 4 , 9 , 16–17)

Type material. Holotype: CHINA (Guangxi Prov.): ♂, two labels: " China: Guangxi, Xingan County / Gaozhai Village, 25º37'N / 110º25'E, 217 m, mixed litter, / sifted, 10.viii.2004, J.-H. Huang" [white, printed]; " CEPHENNODES (s. str.) / elevatus m. / det. P. Jałoszyński, '15 / HOLOTYPUS' [red, printed] ( SNUC). Paratype: 1 ♂, same data as holotype (cPJ).

Diagnosis. Head with longitudinal median elevation extending from thickened clypeus to level of posterior margins of eyes, elevation broadest anteriorly and narrowing caudad, covered with fine and dense punctures and setae, areas flanking elevation distinctly impressed and with sparse punctures and setae; median lobe of aedeagus in ventral view oval and with broadly subtriangular and blunt apex.

Description. Body of male ( Fig. 4 ) strongly convex, oval with feebly marked constriction between pronotum and elytra, dark brown with slightly lighter legs and distinctly lighter palps, covered with light brown vestiture. BL 1.65–1.68 mm.

Head ( Fig. 9 ) broadest at moderately large but strongly convex and coarsely faceted eyes, HL 0.25 mm, HW 0.43 mm; vertex weakly and evenly convex and anteriorly confluent with frons; frons with median longitudinal elevation extending from clypeus to level of posterior margins of eyes, broadest anteriorly and narrowing caudad, areas at each side of elevation distinctly concave; supraantennal tubercles distinct but feebly raised; clypeus thickened. Punctures on vertex and sides of frons near eyes large and distinct, sharply marked and separated by spaces 1–1.5× diameters of punctures, median frontal elevation finely and densely punctate, lateral frontal impressions with punctures slightly smaller and distinctly sparser than those on vertex; setae long, sparse and suberect, denser on vertex and sides of frons near eyes, sparser on lateral frontal impressions, those on median frontal elevation short and dense. Antennae moderately long, four terminal antennomeres distinctly and gradually broadening, AnL 0.83 mm, antennomere I about as long as broad, II 1.6× as long as broad, III distinctly transverse, IV–VI each about as long as broad, VII slightly longer than broad, VIII–X each slightly to distinctly transverse, XI about as long as IX–X together, 1.2× as long as broad, distinctly broader than X and with pointed apex.

Pronotum semi-oval, strongly convex at middle and distinctly flattened near hind corners, broadest slightly behind middle; PL 0.53–0.55 mm, PW 0.75–0.78 mm. Anterior margin in strictly dorsal view nearly straight; lateral margins strongly and evenly rounded in anterior half and feebly rounded in posterior third, sides posteriorly slightly convergent toward sharp-angled and acute posterior pronotal corners; posterior margin deeply bisinuate; lateral marginal carinae in posterior half distinctly demarcated from disc, broad at pronotal base and distinctly narrowing anteriorly, lateral ante-basal pits shallow but distinct, each nearly equally distant from posterior and lateral pronotal margin. Punctures on median part of pronotal disc moderately large but distinct, deep and with sharp margins, separated by spaces subequal to diameters of punctures; punctures toward anterior and posterior pronotal margins reducing in size and depth and becoming sparser, laterally punctures becoming gradually larger, denser and slightly deeper, so that large area adjacent to each anterior corner is covered with large but not coarse punctures separated by spaces shorter than their diameters. Setae on pronotal disc long and moderately dense, suberect to erect.

Elytra about as convex as pronotum, oval, broadest near anterior third; EL 0.88 mm, EW 0.80–0.83 mm, EI 1.06–1.09; subhumeral lines carinate, sharply marked, as long as 0.43× EL and distinctly divergent caudad; basal elytral fovea on each elytron located at middle between lateral margin of mesoscutellum and subhumeral line; elytral apices unmodified, separately rounded. Punctures on elytra much smaller, shallower and slightly sparser than those on pronotal disc; setae distinctly longer than those on pronotum, sparse and erect. Hind wings not studied.

Metaventrite without lateral impressions, convex.

Legs moderately long and slender; all tibiae nearly straight.

Aedeagus (Figs. 16–17) simonis form, AeL 0.44 mm; median lobe in ventral view with broad, subtriangular and blunt apical region; apical projections short, in lateral view with weakly curved apical hook; parameres slender, each with one apical and two subapical setae.

Female. Unknown.

Distribution. SE China: Guangxi Province.

Etymology. The specific epithet elevatus refers to a pair of elevated structures on the frons.

Remarks. This species differs from all other members of the Cephennodes impressifrons group in the frons with two shallow lateral impressions indistinctly demarcated from surrounding areas and separated at middle by longitudinal elevation, and the uniquely thickened clypeus (see also Table 3 ).

Figures

FIGURES 1 – 5. Dorsal habitus of holotype males. Cephennodes bicavatus sp. n. (1); Cephennodes pseudobos sp. n. (2); Cephennodes huapingensis sp. n. (3); Cephennodes elevatus sp. n. (4); Cephennodes gaozhaianus sp. n. (5).

FIGURES 6 – 9. Head of holotype males in anterodorsal view. Cephennodes bicavatus sp. n. (6); Cephennodes pseudobos sp. n. (7); Cephennodes huapingensis sp. n. (8); Cephennodes elevatus sp. n. (9).