Eumenes ferruapiculus Qin, Chen & Li, 2023

Qin, Jiong, Chen, Bin & Li, Ting-Jing, 2023, Additions to the knowledge of the genus Eumenes Latreille, 1802 from China (Hymenoptera, Vespidae, Eumeninae), Journal of Hymenoptera Research 96, pp. 697-714 : 697

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.

Figures

Figures 1 - 10. Eumenes ferruapiculus sp. nov. holotype (♀) (1, 3, 5, 7 - 9) paratype (♂) (2, 4, 6, 10) 1, 2 habitus (dorsal view) 3, 4 clypeus (frontal view) 5 head and pronotum (dorsal view) 6 antenna 7 T 2 - T 6 (dorsal view) 8 metasomal segments 2 - 6 (lateral view) 9 T 1 (dorsal view) 10 genitalia.

Figures 11 - 20. Eumenes affinissimus de Saussure, 1852. ♀: 11, 13, 15, 17 - 20 ♂: 12, 14, 16. 11, 12 habitus (dorsal view) 13, 14 clypeus (frontal view) 15 head and pronotum (dorsal view) 16 antenna 17 metasomal segments 2 - 6 (lateral view) 18 T 2 (dorsal view) 19 T 1 (dorsal view) 20 lamella of T 2 apical margin (dorsal view).