Bledius hei, Zheng, 2004

Zheng, Fa-Ke, 2004, A New Species of the Bledius kosempoensis Group (Coleoptera: Staphylinidae, Oxytelinae) from China 1, The Coleopterists Bulletin 58 (3), pp. 452-455 : 452-454

Bledius hei , new species

( Figs. 1–4 )

Description. Body brownish black to black, pubescence pale to yellow; apical two segments of abdomen, maxillary and labial palpi, antennae, and legs reddish brown, tibiae and tarsi of the latter testaceous. Length: 5.5–6.5 mm.

Width of head (including eyes) 0.90 mm in male, 1.00 to 1.05 mm in female, narrower than pronotum at widest point (ratio 0.86 in male, 0.91 in female), head width / interocular width 1.6 in male, 1.5 to 1.6 in female; dorsal surface of head densely covered with finely granular microsculpture; punctation sparse, shallow; pubescence long; vertex with well developed to weak median, transverse postocular depression; labral margin entire and median incision absent; anterior margin of clypeus with small tubercle near lateral margin; mandibles bidentate. Gular sutures fused.

Pronotum convex; width 1.05 mm in male, 1.1 mm in female, length 0.95 mm in male, 1.0 mm in female, slightly transverse (ratio 1.11 in male, 1.10 in female); widest at about middle; sides nearly parallel in anterior three-fifths, arcuately narrowed in posterior two-fifths; anterior angles rectangular, posterior ones broadly rounded. Surface of pronotum with microscupture obsolete; punctures a little coarse, moderately dense; pubescence similar to that on head; midlongitudinal groove rather broad and deep. Pronotal lateral marginal bead present and complete; bead and protergosternal suture convergent anteriorly. Prosternum bearing patch of setae. Procoxal fissure closed. Scutellum impunctate, with fine microsculpture of transverse and oblique waves.

Elytra at sides 1.40 mm in male, 1.45 to 1.50 mm in female long, longer than pronotum at midline (ratio 1.47 in male, 1.45 in female); width at base 1.20 mm in male, 1.20 to 1.25 mm in

1 Project supported by National Natural Science Foundation of China (30240082) and Sichuan Department of Science and Technology (02NY029-07), this item also is a Sichuan province point developments item .

2 Former name: Sichuan Teachers College.

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Terms of Use: https://bioone.org/terms-of-use Access provided by The Coleopterists Society female, wider than pronotum at widest point (ratio 1.40 in male, 1.10 to 1.14 in female), vaguely dilated posteriad, each with smooth, somewhat narrow, elevated stripe along suture. Surface of elytra with microsculpture indistinct; punctures somewhat finer and denser than that on pronotum; pubescence shorter than that on pronotum. Elytral epipleural ridge present and complete; posterior margin bearing membranous lobe.

Tarsi four segmented. Protibia bear two rows of spinelike setae.

Abdominal tergite 7 (fifth visible) with whitish fringe on posterior margin; tergite 8 with posterior margin broadly emarginated; tergite 9 with glandular canal open dorsally, apex modified into rounded lobe; tergite 10 with struts on anterior margin and posterior margin almost truncate. Punctures and pubescence of abdominal tergites similar to that on head and pronotum, in general becoming somewhat sparser toward apex of abdomen; basal five tergites each transversely depressed along base, surface of depression with fine and dense microsculpture of meshes.

Aedeagus large, voluminous; median lobe base bulbous, apical portion broadly rounded, median surface membranous. Paramere narrowed apicad, with bluntly pointed apex apparently exceeding apex of median lobe.

Spermatheca as in Figure 4 .

Type Material. Holotype: #, P. R. CHINA: Sichuan: Doujiangyan City , 30.44– 31.22 N, 103.25– 103.47 E, July 12, 1980, He Yi-kun . Allotype: $, Paratype: 2 $$, some data as in Holotype, All types in the collection of the China West Normal University , Nanchong , Sichuan, China .

Bledius hei may only be confused with B. kosempoensis Bernhauer , but it may be distinguished from the latter, by features of the aedeagus, the microsculpture of the head, pronotal shape and color of the elytra. In B. kosempoensis , the apical portion of the median lobe is somewhat narrowed apicad with slightly narrow, membranous median surface and apex of the paramere is a little broad, the microsculpture of dorsal surface of the head is coriaceous, the pronotum is about as long as wide, and the elytra are generally brownish red, in B. hei the apical portion of the median lobe broadly rounded with widely membranous median surface and apex of the paramere bluntly pointed, the microsculpture of dorsal surface of the head finely granular, the pronotum slightly transverse, and the elytra brownish to black.

The new species was collected from under a moth-killing lamp. It is at present known only from Doujiangyan City in Sichuan Province, Southwest China.

The species was named in honor of the collector of the Holotype, Mr. He Yi-kun, Capital Normal University, Beijing, China.

Figures

Figs. 1–4. Bledius hei, new species. 1) Aedeagus, dorsal view; 2) aedeagus, lateral view; 3) abdominal segments 9 and 10, male, dorsal view; 4) spermatheca.