Stenomesius harbinensis, 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 harbinensis sp. nov.

Figures 13-18

Type material.

Holotype, ♀ [NEFU; on card], China, Heilongjiang Province, Harbin City, Northeast Forestry University, 20-21.IX.2018, Ming-Rui Li, Wen-Jian Li, Jun-Jie Fan, Yu-Ting Jiang, Guang-Xin Wang and Jun Wu, by yellow pan trapping.

Paratypes: 1♀ [on slides], same data as holotype; 1♀ [on card], China, Heilongjiang Province, Shangzhi City, Maoershan, 18-19.V.2018, Ming-Rui Li, Guang-Xin Wang and Ye Sai, by yellow pan trapping.

Diagnosis.

Vertex black; occiput mostly black with two small, yellow spots near eyes margins; lower face yellow; upper face black; antenna inserted in above the lower eye margins; scape mostly yellow with about apical half of dorsal surface pale brown; pronotum with dorsal surface black and lateral sides yellowish; mesoscutum dark brown; midlobe of mesoscutum with 3 pairs of long setae; scutellar-axillar complex, metanotum, and propodeum black.

Description.

Female. Length 1.8-1.5 mm. Head black with area below antennal toruli and two small spots on vertex yellow; scape mostly yellow with about 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 dark brown; scutellar-axillar complex, metanotum, and propodeum black; wings hyaline, with veins pale brownish yellow; legs yellow with claws brown; gaster mainly black, with apex brown, anterior half with a median, large, yellowish-brown spot; ovipositor black.

Head (Fig. 15 ) 1.3 × as wide as high in frontal view and about 2.0 × as wide as long in dorsal view; face smooth, shiny, with fine setae around eye margins; vertex with scattered setae; POL 1.3 × OOL; eye with sparse short pubescence; malar sulcus present, shallow; malar space 0.36 × eye height; mandible curve inwards and well developed; occiput with dense setae. Antenna (Fig. 16 ) inserted at above lower eye margins. Relative measurements (length: width): scape = 54: 9; pedicel = 14: 9; F1 = 22: 10; F2 = 23: 10; F3 = 22: 10; F4 = 22: 12; clava = 32: 11 (excluding terminal spine).

Mesosoma (Fig. 13 ). Pronotum with a row of setae along anterior margin and 2 long, pale yellow setae on posterior median margin; mesoscutum, axillae, and scutellum distinctly reticulate; midlobe of mesoscutum with 3 pairs of long setae; notauli curved in posterior part; axillae well separated from each other; scutellum with 2 pairs of long setae; sublateral grooves meeting each other medially on posterior margin; propodeum smooth, with plicae and H-shaped carina; each propodeal callus with 10 long setae; forewing (Fig. 17 ) 2.6 × as long as wide; speculum absent; hind wing (Fig. 18 ) about 5.8 × as long as wide; metatibial spur shorter than corresponding basitarsomere. Relative measurements (length): SMV = 36; MV = 41; PMV = 16; STV = 9.

Metasoma (Fig. 13 ). Petiole short, transverse, about 1.2 × as long as wide in dorsal view; gaster ovate, 1.9 × as long as wide, and 1.1 × as long as mesosoma; ovipositor exserted at apex of gaster.

Male. Unknown.

Host.

Unknown.

Distribution.

China (Heilongjiang).

Etymology.

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

Figures

Figures 13 - 18. S. harbinensis, sp. nov. 13 - 15 female, holotype 13 habitus in dorsal view 14 habitus in lateral view 15 head in frontal view 16 - 18 female, paratype 16 antenna 17 forewing 18 hind wing. Scale bars: 100 μm.