Eumenes ferruapiculus Qin, Chen & Li sp. nov.

Figs 1-10

Material examined.

Holotype, ♀, China, Yunnan Province, Diqing Tibetan Autonomous Prefecture, Deqin County, Benzilan Town, 29°34'08"N, 106°33'28"E, 3400 m, 2011.vii.21, Ting-Jing Li (CNU) ; Paratype, 2♀ 1♂, same data as holotype .

Diagnosis.

This species is similar to E. labiatus by the following character combination: T1 with pear-shaped, two lateral margins of postpetiole substraight and parallel from basal third to apex (Fig. 9). It is easily distinguished from the related species and other members of the genus by the combination of following characters: head and antennal scape with dense setae about as long as scape width (Fig. 3), basal angle of metasomal segment 2 acute, T1 and T2 black, other metasomal segments almost ferruginous (Fig. 7), and apex of penis valves convex in genitalia (Fig. 10) (depressed in E. labiatus).

Description.

Female (Fig. 1): body length 14.2-15.6 mm. Body black, with dense and short setae, with following parts ferruginous: clypeus (Fig. 3), mandible except base, antenna except small spots of A1 and A2, lower margin of ocular sinus, inter-antennal spot reaching clypeus, a band on upper gena (Fig. 5), pronotum (Fig. 5), tegula, apex of parategula, tibiae and tarsi (Fig. 1), apical thin and interrupted band on T2, and visible parts of metasomal segments 3-6 (Figs 12, 14); wing mostly ferruginous brown.

Head. Head (Fig. 3) wider than long in frontal view, maximum width of head 1.12 × its length; clypeus with punctures denser at base than other part, clypeal maximum width 1.10 × its length, slightly convex, apex emarginate forming two wide lateral teeth, apical width 1.57 × distance between antennal sockets; inter-antennal area with longitudinal carina; scape with dense setae shorter than scape width; frons coarsely punctate and distinctly reticulated, punctures on vertex and gena similar to those of frons; POL 0.91 × OOL; distance between anterior and posterior ocelli 1.1 × diameter of anterior ocellus (Fig. 5).

Mesosoma. Mesosoma (Fig. 5) with short and dense setae as long as those on head, wholly with coarse and dense punctures similar to or denser than those on vertex, those on mesoscutum and mesopleuron a little denser and reticulate; median length of mesoscutum 1.02 × its maximum width; propodeum with median longitudinal groove.

Metasoma. (Figs 7-9). Metasoma with sparse setae shorter than those on mesosoma; T1 densely punctate, punctures similar to those on mesoscutum, length of T1 less than 4 × its apical width and abruptly swollen from one-third near base, then lateral margin parallel at apex, and not constrict near apical margin (Fig. 9); T2 densely punctate, punctures obviously smaller than those of T1, apical lamella of T2 not reflex and not depressed in the middle (Fig. 7); basal angle of segment 2 acute in lateral view (Fig. 8); T2 not strongly swollen in the middle, weakly depressed in its preapical part; visible parts of other metasomal segments normal, with sparse short setae (Fig. 8).

Male. Body length 11.1 mm (Fig. 2). Sculpture, setae, and coloration similar to female except as follows: clypeus entirely yellow (Fig. 4), apex of A13 reaching basal fourth of A11 (Fig. 6), apex of penis valves convex in genitalia (Fig. 10).

Distribution.

China (Yunnan).

Etymology.

The specific name ferruapiculus is derived from two Latin words: ferrugineus (= ferruginous) and apex, referring to ferruginous apex of metasoma.