Stenomesius guanshanensis, Fan & Li, 2021

Fan, Jun-Jie & Li, Cheng-De, 2021, Three new species of Stenomesius Westwood (Hymenoptera, Eulophidae) from China, with a key to Chinese species, ZooKeys 1062, pp. 1-10 : 1

Stenomesius guanshanensis sp. nov.

Figures 1-6

Type material.

Holotype, ♀ [NEFU; on card], China, Jiangxi Province, Yichun City, Guanshan National Nature Reserve, 2.VIII.2018, Xiang-Xiang Jin and Wang-Ming Li, by sweeping.

Paratype: 1♀ [on slide], same data as holotype.

Diagnosis.

Lower face yellow; interantennal area yellowish; upper face and vertex black with area around eye margins yellow; antenna inserted at high above the lower eye margins and on the middle of between anterior ocellus and lower margin of clypeus. Pronotum with dorsal side black and lateral sides yellowish; mesoscutum, axillae and scutellum yellow or yellowish except about posterior 1/6 of scutellum black; midlobe of mesoscutum with 4 pairs of long setae; scutellum light alutaceous; dorsellum and lateral panels black; propodeum yellowish with carina brown.

Description.

Female. Length 2.0-2.2 mm. Lower face yellow; interantennal area yellowish; upper face and vertex black with area around eye margins yellow; scape yellow except apical half of dorsal surface pale brown, pedicel and flagellum dark brown; mandibles yellow with teeth brown; gena yellow; occiput black. Pronotum with dorsal side black and lateral sides yellowish; mesoscutum, axillae, and scutellum yellow or yellowish, except about posterior 1/6 of scutellum black; dorsellum and lateral panels black; propodeum yellowish, with carina brown; wings hyaline, with veins pale brownish yellow; legs pale yellow, with claws brown; gaster mainly yellowish with apex brown, anterior 1/3 of lateral margins, two spots on median part, and spots on lateral sides of T4-7 dark brown; ovipositor black.

Head (Fig. 3 ) 1.5 × as wide as high in frontal view and 2.0 × as wide as long in dorsal view; frons and vertex smooth, shiny, with very sparsely scattered setae; POL 1.3 × OOL; eye with sparse short pubescence; malar sulcus present, shallow; malar space 0.24 × eye height; mandibles with 6 teeth; occiputal margin with dense setae. Antenna (Fig. 4 ) inserted at high above the lower eye margins and on the middle of between anterior ocellus and lower margin of clypeus; scape exceeding level of vertex and apical 2/3 with setae dorsally. Relative measurements (length: width): scape = 56: 9; pedicel = 18: 9; F1 = 28: 8; F2 = 27: 8; F3 = 29: 8; F4 = 26: 8; clava = 36: 8 (excluding terminal spine).

Mesosoma (Fig. 1 ). Pronotum with a row of setae on anterior margin and 2 long pale yellow setae on posterior median margin; mesoscutum with anterior half reticulate and posterior half almost smooth; midlobe of mesoscutum with 3 pairs of long setae on median area and 1 pair of long setae on posterior area; axillae and scutellum shiny, light alutaceous; axillae well separated from each other; scutellum with 2 pairs of long setae; sublateral grooves not meeting each other medially on posterior margin; propodeum smooth, with plicae and H-shaped carina; each propodeal callus with 6 long setae; forewing (Fig. 5 ) 2.7 × as long as wide; speculum absent; hind wing (Fig. 6 ) about 6.2 × as long as wide; metatibial spurs shorter than corresponding basitarsomere. Relative measurements (length): SMV = 22; MV = 27; PMV = 11; STV = 8.

Metasoma (Fig. 1 ). Petiole short, transverse; gaster ovate; 2.4 × as long as wide and 1.3 × as long as mesosoma; ovipositor exserted at apex of gaster.

Male. Unknown.

Host.

Unknown.

Distribution.

China (Jiangxi).

Etymology.

The specific name is derived from the name of the type locality.

Figures

Figures 1 - 6. S. guanshanensis, sp. nov. 1 - 3 female, holotype 1 habitus in dorsal view 2 habitus in lateral view 3 head in frontal view 4 - 6 female, paratype 4 antenna 5 forewing 6 hind wing. Scale bars: 100 μm.