Naddia chinensis Bernhauer, 1929

Yang, Zhuo & Zhou, Hong-Zhang, 2010, Three new species of Naddia Fauvel (Coleoptera: Staphylinidae) from China, Zootaxa 2531 (1), pp. 1-14 : 11-13

5. Naddia chinensis Bernhauer, 1929

( Figs. 5A–K )

Bernhauer, 1929: 110 (Type locality: Hweisin: Kansu); Scheerpeltz, 1933: 1409 (catalog); Smetana & Davies, 2000: 38; Herman, 2001: 3353; Smetana, 2004: 674.

Type material. Holotype: CHINA: Gansu: ♂, “Hweisin Kansu, Naddia chinensis Brh. Typ. un.”, “ Naddia chinensis Brnh. Typ. un.”, “Chicago NHMus M.Bernhauer Collection ” ( FMNH).

Additional material. CHINA, Beijing: ♀, Haidian, Jiufeng [N40.0656°, E116.0888°], 25.VIII.1997, Haisheng Zhou collected [A. Solodovnikov det. 2006] ( IZCAS) ; ♀, Haidian, Jiufeng [N40.0656°, E116.0888°], 11.VIII.1997, Haisheng Zhou collected ( IZCAS) .

Redescription. Body length: 20.6–21.6 mm.

Male measurements (n = 1): HW: 4.05; HL: 3.51; CL: 1.02; PO: 1.63; PW: 4.08; PL: 4.01; EW: 5.03; EL: 4.81; ELS: 2.62.

Female measurements (mean, n = 2): HW: 3.76; HL: 3.58; CL: 1.06; PO: 1.67; PW: 3.77; PL: 3.79; EW: 4.61; EL: 4.93; ELS: 2.78.

Male. Body robust, parallel-sided. Black, dull, elytra with dark orange pubescence, maxillary palpi brown, apex of last segment slightly paler, tibiae appearing yellow due to dense yellow pubescence, tarsi brown.

Head ( Fig. 5A ) large, nearly square, moderately wider than long and slightly widened backward, sides almost straight; eyes small, oval, well protruding, but not from lateral outline of head, longitudinal diameter distinctly shorter than post-ocular area; base distinctly deeply and broadly emarginate, posterior angles obviously protruding backward with apices rounded; surface closely covered with coarse and rugose punctures, with short yellow pubescence. Antennae ( Fig. 5D ) short and stout, hardly reaching midlength of pronotum, moderately thickened, last segment distinctly longer than wide, almost oval-shaped, ratios of antennomere length (1 to 11) as follows: 26:17:18:17:18:18:19:18:19:17:28.

Pronotum nearly horseshoe-shaped and convex, slightly longer than broad, and as broad as head, widest at about anterior two-fifths; sides parallel anteriorly before widest part, gently rounded and narrowed at anterior four-fifths, gradually retracted posteriorly; anterior margin obliquely emarginate on each side, anterior angles obtuse, posterior angles widely rounded; surface closely covered with rugose punctures, less coarse than on head, with impunctate midline, becoming indistinct and almost obsolete at about midlength; pubescence similar to that on head. Scutellum triangular, densely covered with black and orange velvety pubescence.

Elytra subquadrate, a little dilated posteriad, longer than wide, longer and distinctly wider than pronotum; sides straight, posterior margin markedly emarginate medially; surface covered with coarse and dense umbilicate punctures, with orange pubescence.

Abdomen elongate and gradually narrowed posteriad; surface finely and densely punctate, 3–5 th tergites with patches of yellow pubescence laterally, patches gradually decreasing in size towards apex, 7 th tergite with transverse belt of golden yellow pubescence near anterior margin; posterior margin of 8 th sternite ( Fig. 5B ) triangularly excised medially, 10 th tergite ( Fig. 5C ) narrowly triangular, apical half with numerous long setae along margin; apex of 9 th sternite ( Fig. 5E ) slightly emarginate medially, apical margin bearing long setae.

Legs robust, with dense golden yellow pubescence, protarsus strongly dilated, with brownish yellow pubescence.

Aedeagus ( Figs. 5H–K ) almost symmetrical; median lobe elongate and middle portion weakly sclerotized, with basal part large and globular, in ventral view median lobe slightly narrowed at midlength, and widened before rounded apical margin; in lateral view distinctly curved ventrad in profile; parameres ( Fig. 5H ) degenerate and separate, very fine and slender, each with two short setae apically.

Female. Second gonocoxite ( Fig. 5G ) with minute stylus bearing two equally long apical setae, basal half of second gonocoxite with long dark setae. 10 th tergite ( Fig. 5F ) triangular, narrow, apex triangular, apical half of 10 th tergite with numerous equally long setae on surface and along margin.

Distribution. China (Beijing, Gansu).

Figures

FIGURES 5A–K. Naddia chinensis Bernhauer, male (A–E, H–K, holotype) and female (F–G). A—head; B—8th sternite; C, F—10th tergite; D—antennae; E—9th sternite; G—detail of genital segment with second gonocoxite; H— detail of paramere; I—aedeagus, ventral view; J—aedeagus, lateral view; K—aedeagus, dorsal view. Scale bar 1mm.