Sycophila hunanensis Xiao & Gao, 2021

Xiao, Hui, Zhang, Rui & Gao, Mengqing, 2021, Three new species of the genus Sycophila (Hymenoptera, Chalcidoidea, Eurytomidae) from China, ZooKeys 1029, pp. 123-137 : 123

Sycophila hunanensis Xiao & Gao sp. nov. Figs 6-13

Material examined.

Holotype. ♀, China: Hunan: Yanling Xian: Shidu , 1.III.2017, ex. galls of Plagiotrochus glaucus Melika & Tang ( Cynipini ), leg. Gaozhi Zhao. Paratype. 4♀ 1♂, same data as holotype ; 2♂, China: Hainan: Wuzhi Shan , 708-1206M, 9.IV.2010, leg. Tianyang Jiao.

Diagnosis.

Body length 1.8-2.0 mm, mainly black except lateral shoulder and lateral panel of pronotum yellow-brown; antenna slightly thick, Fu1 1.23 × as long as broad, Fu2-Fu5 subequal to Fu1; pedicel and flagellum combined slightly longer than head width (1.1 ×); marginal vein enlarged, maculae not extending backward to disc of fore wing.

Description.

Female (holotype). Body (Fig. 6 ) length 2.0 mm, body black except eyes red-brown, middle part of lower face yellowish, shoulder of pronotum and lateral panel of pronotum yellow-brown. Antennae brown except scape yellowish and pedicel yellow-brown. Legs yellowish except coax dark brown, femur and tibia brown on middle part. Wings hyaline, venation yellow-brown except marginal vein enlarged with black spot. Head and thorax with densely umbilicate puncturation.

Head hairy, 1.25 × as wide as high in frontal view (Fig. 7 ), eyes separated by 1.52 × their height, malar space 0.81 × eyes height. Antennal insertion on lower ocular line; scrobes deep and smooth, not reaching anterior ocellus, interantennal crest absent. Umbilicate puncturation shallow on lower face. Lower margin of clypeus with incision separating a single tooth on both sides; mandible three teethed. Head in dorsal view 1.67 × as wide as long, occipital carina inconspicuous; temple length 0.3 × eyes length; POL 2.16 × OOL, OOL 2.0 × ocellus diameter. Antennal formula 11153; scape reaching anterior ocellus, equal to or slightly shorter than eyes height, 6.25 × as long as broad, 2.36 × pedicel length; pedicel and flagellum combined 1.1 × head width; pedicel in lateral view 2.0 × as long as broad, longer than Fu1; anellus 0.5 × as long as broad; Fu1 1.23 × as long as broad, Fu2-Fu5 as long as Fu1; clava length 3.0 × width, shorter than the following three funiculars combined; each funicular with a single row of sensilla; ventral surface of clava without micropilose area.

Mesosoma 1.58 × as long as broad. Pronotum 0.51 × as long as broad. Mesoscutum 0.67 × as long as broad, notauli shallow and complete. Scutellum slightly longer than broad (1.11 ×). Propodeum rugosity (Fig. 8 ), shorter than mesoscutum (0.73 ×); basal sculpture of median furrow with one row of areoles; median carina and plica absent. Fore wing (Fig. 9 ) 2.3 × as long as broad, with marginal fringe, speculum and basal hairline; maculae dark brown, confining on marginal vein and stigmal vein, not extending backward; marginal vein triangular broadened; ratio of marginal vein: postmarginal vein: stigmal vein as 12:2:10. Hind coxa stout, 2.0 × as long as broad; hind femur enlarged in middle part, 3.33 × as long as broad; hind tibia with 2 ventral spurs.

Metasoma 1.22 × as long as mesosoma. Gaster with petiole longer than broad, reticulate; gaster 2.0 × as long as broad, laterally compressed. Gaster arched in lateral view, gastral tergum smooth; Gt4 longest, 1.36 × as long as Gt3. Ovipositor not exposed.

Male. Length 2.0 mm, body (Figs 10 , 11 ) black except tegula, anterior corner of pronotum yellowish, apex of femur, apex of tibia and tarsus yellowish. Head and thorax with densely umbilicate puncturation. Antenna dark brown, formula 11143 (Fig. 12 ), Fu1 1.83 × as long as broad, Fu2-Fu4 equal to Fu1. Petiole (Fig. 13 ) 4.0 × as long as broad, shorter than gaster; gaster 1.55 × as long as petioles, Gt4 longer than other tergites.

Etymology.

Named after the location of the type material.

Remarks.

The species is similar to S. biguttata (Swederus, 1795) from Sweden ( Lotfalizadeh and Gharali 2007), but different by the maculae on fore wing not extending backward to disc, hind tibia pale yellowish except mid part brown.

Host.

The wasps were reared from the galls of Plagiotrochus glaucus Tang & Melika, 2011 (Hym., Cynipidae ) (Tang and Melika 2011) in China.

Distribution.

China (Hunan, Hainan).

Figures

Figures 6 - 13. Sycophila hunanensis sp. nov. 6 - 9 female holotype 6 body in lateral view 7 head in frontal view 8 propodeum in dorsal view 9 fore wing in dorsal view 10 - 13 male 10 body in dorsal view 11 body in lateral view 12 antenna 13 propodeum, petiole and gaster in dorsal view.