Hemiptarsenus tianshuiensis, Fan & Li, 2022

Fan, Jun-Jie & Li, Cheng-De, 2022, Two new species of Hemiptarsenus Westwood (Hymenoptera, Eulophidae) from China, with a key to Chinese species, ZooKeys 1103, pp. 45-56 : 45

Hemiptarsenus tianshuiensis sp. nov.

Figs 1-3 , 4-8

Type material.

Holotype, ♀ [NEFU; on card], China, Gansu Province, Tianshui City, Maiji District, Maijishan National Geopark, 23.VII.2020, Jun-Jie Fan, by sweeping. Paratypes: 2♀1♂; [1 ♀ on slide, 1 ♀1♂on cards], same data as holotype.

Diagnosis.

Antennae dark brown with ventral surface of scape yellow. Metascutellum mostly smooth with anterior area reticulate. Propodeum about 0.7 × as long as mesoscutellum measured medially, and strongly reticulate, median carina and plicae present. Mid and hind leg tibiae yellowish-white with apical 1/3 dark brown, metafemur yellow with apical 1/4 dark brown. Petiole yellow. Gaster dark brown with a transverse yellow patch near base.

Description.

Female. Length 1.8-2.0 mm (2.0 mm) mm, fore wing length 1.6-1.8 mm (1.8 mm) mm. Head dark metallic green. Eyes red-brown. Ocelli pale yellow. Scape yellow except dorsal surface dark brown, pedicel and flagellum dark brown. Mesosoma dark metallic green except mesoscutellum with golden-green tinge. Petiole yellow. Gaster dark brown with a transverse yellow patch near base. Fore leg mostly yellowish white with tarsomeres 1-3 brown, tarsomere 4 dark brown; mid leg with coxae and trochanters yellowish white, femur yellow with apical 1/2 brown on dorsal surface, tibiae yellowish-white with apical 1/3 dark brown, tarsomeres 1 and 2 yellowish white and tarsomeres 3 and 4 dark brown; hind leg similar to mid leg with femur apical 1/4 dark brown.

Head (Fig. 4 ) 1.2-1.3 × (1.2 ×) as wide as high in frontal view and 1.9-2.1 × (2.0 ×) as wide as long in dorsal view, micro-reticulate. POL 2.0 × OOL. Eyes with short and dense setae. Malar sulcus present, malar space 0.34 × eye height. Mandibles quadridentate. Antennae (Fig. 6 ) with scape slender and cylindrical, 4.3-4.6 × (4.6 ×) as long as wide, extending far above vertex; pedicel 1.9-2.0 × (1.9 ×) as long as wide and scape 2.4-2.6 × (2.5 ×) as long as pedicel; funicle 4-segmented, F1 2.9-3.2 × (3.0 ×) as long as wide and 1.3-1.4 × (1.4 ×) as long as pedicel, F2 2.9-3.1 × (2.9 ×) as long as wide, F3 and F4 2.6-2.8 × (2.6 ×) and 2.0-2.1 × (2.0 ×) as long as wide respectively; clava 2-segmented, 2.5-2.7 × (2.6 ×) as long as wide, the first clavomere 1.8-1.9 × (1.8 ×) as long as the second.

Mesosoma (Figs 1 , 5 ) 2.0-2.2 × (2.1 ×) as long as wide. Pronotum shorter than mesoscutum, reticulate. Notauli inconspicuous. Mesoscutum strongly reticulate, midlobe of mesoscutum with three pairs of long setae. Axillae mostly smooth and separated from each other. Mesoscutellum 1.2-1.3 × (1.2 ×) as long as wide, shorter than mesoscutum, strongly reticulate, and with two pairs of long setae. Metascutellum mostly smooth with anterior area reticulate. Propodeum about 0.7 × as long as length of mesoscutellum measured medially, strongly reticulate, median carina and plicae present; spiracle separated from metanotum by a distance longer than diameter of spiracle; each propodeal callus with 13 setae. Prepectus with coarse reticulate sculpture. Metacoxa reticulate on dorsal surface.

Wings. Fore wing (Fig. 7 ) 2.7-2.9 × (2.9 ×) as long as wide. Costal cell 13.7-14.0 × (14.0 ×) as long as wide, with a row of black setae on dorsal surface. SMV with five setae on dorsal surface. Cubital vein straight at base. Speculum small, closed posteriorly. MV 1.3-1.4 × (1.3 ×) as long as PMV. PMV 2.0-2.1 × (2.0 ×) as long as STV. Hind wing (Fig. 8 ) about 6.4-6.9 × (6.9 ×) as long as wide.

Metasoma (Fig. 1 ) 1.1-1.2 × (1.1 ×) as long as length of mesosoma. Petiole longer than wide in dorsal view. Gaster ovate, 2.2-2.4 × (2.3 ×) as long as wide. Ovipositor exserted beyond apex of gaster.

Male (Fig. 3 ). Similar to the female. Body length 1.6 mm, fore wing length 1.5 mm. Head 1.2 × as wide as high in frontal view and about 1.9 × as wide as long in dorsal view. POL 2.43 × OOL. Malar space 0.5 × eye height. Antennae dark brown with ventral surface of scape yellow, funicle with three long branches, with long setae. Relative measurements (length: width): scape = 33: 8; pedicel = 10: 7; F1 = 10: 6; F2 = 20: 4; F3 = 22: 4; F4 = 40: 7; clava = 40: 7. Fore wing 3.1 × as long as wide. Hind wing about 7.1 × as long as wide. MV 1.3 × as long as PMV. PMV 2.0 × as long as STV. Metasoma almost as long as mesosoma. Petiole 1.7 × as long as wide in dorsal view. Gaster ovate, 1.9 × as long as wide.

Host.

Unknown.

Distribution.

China (Gansu).

Etymology.

The specific epithet refers to the location of the type locality in Tianshui City.

Figures

Figures 1 - 3. Hemiptarsenus tianshuiensis sp. nov., female, holotype (1, 2), male, paratype (3) 1 habitus in dorsal view 2 habitus in lateral view 3 habitus in dorsal view. Scale bars: 100 μm.

Figures 4 - 8. Hemiptarsenus tianshuiensis sp. nov., female, holotype (4), paratype (5 - 8) 4 head in frontal view 5 mesosoma in dorsal view 6 antenna 7 fore wing 8 hind wing. Scale bars: 100 μm.