Pseudocyanopterus raddeivorus Cao, van Achterberg & Yang, 2020

5. Pseudocyanopterus raddeivorus Cao, van Achterberg & Yang , sp. nov.

Figs 7 View FIGURE 7 , 8 View FIGURE 8

Material examined. Holotype: ♀, NE China, Liaoning Province, Kuandian County, Daxicha Forest, coll. 14.VI.2009 attached to larva of Massicus raddei , pupa: 17.VI.2009; emerged: 27.VI.2009, Yang Zhong-Qi . Paratypes: 1♂, id., but coll. 2. VI.2009, emerged 10. VI.2009; 1♀, id., but coll. 18. VI.2009, emerged 2.VII.2009, Yang Zhong-Qi & Tang Yan-Long ; 1♀, id., but coll. 24. VI.2009, emerged 4.VII.2009, Tang Yan-Long & Wang Xiao-Yi; 1♀, id., but coll. 20. VI.2009, emerged 5.VII.2009, Yang Zhong-Qi.

Description. Body length of ♀ / ♂ 2.8–5.0/ 4.1 mm. Fore wing length of ♀ / ♂ 2.8–4.6/ 3.4 mm.

Colour. (Female). Head yellow; stemmaticum yellow, ocelli black ( Fig. 7C View FIGURE 7 ); antenna black ( Fig. 7E View FIGURE 7 ); apical 1/2 of mandible black; labial and maxillary palpi pale yellow ( Fig. 7D View FIGURE 7 ). Dorsal part of pronotum and mesoscutum medially yellow to orange, mesoscutum bilaterally black ( Fig. 7G View FIGURE 7 ); side of pronotum, propleuron, fore leg yellow ( Fig. 7B View FIGURE 7 ); scutellum, metanotum, propodeum, mesopleuron, metapleuron, middle leg, and hind leg entirely black ( Fig. 7G View FIGURE 7 ). First metasomal tergite including epipleuron yellow (but posterior area between postero-lateral grooves brown), basal 2 nd tergite and 6 th, 7 th tergites more or less yellow; other parts of metasoma black in dorsal view ( Fig. 7H View FIGURE 7 ); ovipositor sheath yellow to brown ( Fig. 7B View FIGURE 7 ).

Head. In dorsal view, head width 1.65 × median length, 1.2 × width of mesoscutum; frons and vertex smooth, with few fine setae; median length of vertex 1.7 × median length of frons; ocellar triangle regular triangular, slightly higher than vertex; OOL: OD: POL = 11: 4: 3; length of eye: length of temple = 5: 3 ( Figs 7C, 7G View FIGURE 7 ). In anterior view, median width of head 1.5 × height of head (excluding mandible); minimum distance between eyes subequal to height of eye; face smooth, covered with more setae than frons and vertex; height of clypeus 0.2 × its width, exterior margin of clypeus arcuate; mandible robust, apical 1/2 acute; malar space 0.2 × height of eye ( Fig. 7D View FIGURE 7 ). In lateral view, maximum height of head (including mandible) 1.15 × maximum length of head ( Fig. 7F View FIGURE 7 ). Antenna with 36 antennomeres, scape subequal to 1 st flagellomere, 1.4 × longer than its maximum width; 1 st flagellomere 2.7 × its maximum width, 1.3 × 2 nd flagellomere; last flagellomere acute apically ( Fig. 7E View FIGURE 7 ).

Mesosoma. In dorsal view, mesosoma smooth with sparse long setae; median length of mesoscutum 0.9 × its width; middle lobe of mesoscutum evenly rounded in front; notauli weak, nearly absent; scutellar sulcus 0.45 × maximum width of mesoscutum and its length 1/10 of median scutellar length, with 7 longitudinal carinae; scutellum smooth with sparse long setae, apical scutellum and axilla with dense setae; metanotum 0.3 × median length of scutellum, smooth; propodeum smooth with dense long white setae, without any carina ( Fig. 7G View FIGURE 7 ). In lateral view, length of mesosoma 1.6 × its height; mesoscutum evenly elevated above pronotum; mesopleuron smooth, with sparse long setae anteriorly, subalar depression weakly developed, posterior mesopleuron, metapleuron with dense fine long setae ( Fig. 7B View FIGURE 7 ).

Wings ( Fig. 8D View FIGURE 8 ). Subhyaline; length of fore wing 3.0 × its maximum width; pterostigma 3.0 × as long as its maximum width; vein 1-R1 1.9 × length of pterostigma; vein r originates at basal 2/5 of pterostigma; vein SR1 3.0 × as long as vein 3-SR; vein 3-SR 2.1 × as long as vein r; vein r 0.5 × as long as vein 2-SR; meeting point of veins 2-SR, 2-M and 2-SR+M less sclerotized, veins interrupted; vein 1-SR+M straight; vein 1-SR 0.4 × length of vein 1-M; vein r-m interrupted both ends, less sclerotised; veins 3-M and CU1a extending to wing margin. Length of hind wing 4.7 × its maximum width; vein M+CU 0.4 × length of vein 1-M; vein 1r-m of hind wing twice as long as vein 2-SC+R.

Legs. Fore femur 0.9 × as long as fore tibia and 4.2 × as long as its width, fore tibia 8.0 × its width, spur 0.6 × as long as basitarsus of fore leg, ratio of fore tarsomeres I–V = 60: 40: 21: 17: 25 ( Fig. 8A View FIGURE 8 ); middle femur 0.8 × middle tibia, spur 0.3 × as long as basitarsus of middle leg, ratio of middle tarsomeres I–V = 65: 37: 26: 15: 25 ( Fig. 8B View FIGURE 8 ); hind femur 3.3 × its width, 0.7 × as long as hind tibia, ratio of hind tarsomeres I–V = 55: 30: 20: 12: 18 ( Fig. 8C View FIGURE 8 ).

Metasoma ( Fig. 7H View FIGURE 7 ). First tergite 1.5 × longer than its maximum apical width in dorsal view (excluding epipleuron); epipleuron visible in dorsal view; 1 st tergite with elongate and deep basal depression, coarsely punctate medio-posteriorly and with crenulate lateral grooves, flat lateral area narrow posteriorly; 2 nd tergite smooth (except crenulate grooves and some superficial rugae anteriorly), medio-basal and baso-lateral areas rather small, mediobasal area connect to carina posteriorly; suture between 2 nd and 3 rd tergites 0.2 × as long as median length of 3 rd tergite; maximum width of 3 rd tergite 2.3 × its median length (without 2 nd metasomal suture); 3 rd tergite with large antero-lateral areas; 4 th and 5 th tergites smooth and shiny, weakly convex and without crenulate transverse basal groove or antero-lateral areas; ovipositor sheath 2.25–2.43 × longer than median length of metasoma, and 1.28–1.40 × longer than fore wing; ovipositor narrow, but apically widened and upper valve convex dorsally, with minute ventral teeth apically ( Fig. 8E View FIGURE 8 ).

Male. Similar to female, but with 1 st tergite entirely yellow.

Etymology. Named after the Latin name of its host and “voro” (Latin for “devour”).

Hosts. Parasitoid of Massicus raddei .

Distribution. Palaearctic China ( Liaoning).

Remarks. Five individuals were reared from just three host corpses in NE China, indicating that the population is likely to be small. The ratio of female to male is 4:1.