Naddia hainanensis Yang & Zhou, 2010

3. Naddia hainanensis Yang & Zhou View in CoL , sp. n.

( Figs. 3A–I View FIGURES 3 )

Type material. Holotype: CHINA: Hainan: ♂, Wuzhi Mountain [ N24.95187°, E112.93079°], 785 m, 10.VII.2004, Jie Wu and Yongjie Chen collected ( IZCAS). GoogleMaps

Description. Body length: 11.7 mm.

Male measurements (n = 1): HL: 1.81; HW: 2.18; CL: 0.67; PO: 0.88; PL: 2.06; PW: 2.25; EL: 2.74; EW: 2.84; ELS: 1.67.

Male. Body small, black, almost dull, elytra brown-black, mouthparts and posterior margin of abdominal segments reddish brown, tibiae yellow and tarsi brown.

Head ( Fig. 3C View FIGURES 3 ) nearly quadrate, wider than long, sides almost straight and not widened backward, a little narrower than pronotum; eyes small, oval, moderately protruding from lateral outline of head, longitudinal diameter somewhat shorter than postocular area; base deeply and broadly emarginate, posterior angles obviously protruding backward with apices rounded; surface densely covered with umbilicate punctures, with short black pubescence. Antennae ( Fig. 3F View FIGURES 3 ) 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: 40:20:18:21:21:19:21:21:18:31:21:46.

Pronotum nearly horseshoe-shaped and convex, wider than long, wider than head, widest at about anterior two-fifths, anterior margin obliquely emarginate on each side, sides narrowed anteriorly before the widest part; anterior angles obtuse, posterior angles widely rounded; surface densely covered with umbilicate punctures, forming irregular rugae anteriorly, with impunctate, posteriorly broader midline; pubescence similar to that on head. Scutellum triangular, densely covered with black velvety pubescence.

Elytra subquadrate, not dilated posteriad, wider than long, longer and wider than pronotum; sides straight, posterior margin slightly emarginate medially; surface densely covered with umbilicate punctures, covered with dense brownish pubescence.

Abdomen elongate and gradually narrowed posteriad; surface finely and densely punctate, 3–7 th tergites with patches of yellow pubescence laterally, patches gradually decreasing in size towards apex; 8 th tergite ( Fig. 3A View FIGURES 3 ) with symmetrical pubescence towards middle, posterior margin of 8 th sternite ( Fig. 3B View FIGURES 3 ) slightly and shallowly excised medially, with pubescence towards middle, apex of 9 th sternite ( Fig. 3E View FIGURES 3 ) slightly emarginate medially; surface bearing moderately long yellow pubescence. 10 th tergite ( Fig. 3D View FIGURES 3 ) triangular, with long golden pubescence along midline.

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

Aedeagus ( Figs. 3G–I View FIGURES 3 ) symmetrical; with weakly sclerotized middle part and globular basal part, in ventral view, median lobe narrowed in middle, posterior part dilated towards apex; paramere slender, gradually narrowed apicad, almost half as long as median lobe; in lateral view also slightly curved ventrad, paramere large and elongate, apex with two pairs of fine setae.

Female. Unknown.

Distribution. China ( Hainan).

Notes. The species differs from all other known Chinese species by the remarkably small size.

Etymology. The species is named after the type locality, Hainan Province, China.