Spathius wuae, Tang & Belokobylskij & Chen, 2015

Spathius wuae sp. nov.

( Fig. 47 View FIGURE 47 )

Description. Female. Body length 4.0 mm; fore wing length 2.5 mm.

Head. Antennae almost filiform, more than 14-segmented (apical segments missing). Scape 1.8 × as long as its maximum width. First flagellar segment 5.8 × as long as its apical width, 1.2 × as long as second segment. Head width (dorsal view) 1.4 × median length. Head behind eyes (dorsal view) roundly narrowed; transverse diameter of eye 1.5 × length of temple. Ocelli medium-sized, arranged in triangle with base 1.2 × its sides; POL: Od: OOL = 6: 5: 12. Vertex entirely, coarsely, weakly undulately and curvedly striate. Frons entirely, coarsely and curvedly striate. Eye glabrous, 1.2 × as high as broad. Malar space 0.6 × eye height and 1.2 × basal width of mandible. Temple mostly finely striate-reticulate. Face with very dense, fine and absolutely even transverse aciculation (like surface of gramophone record or CD); its width 1.3 × eye height and 1.1 × height of face and clypeus combined. Clypeal suture mostly absent. Hypoclypeal depression rather small and round, its width 0.7 × distance from edge of depression to eye, 0.4 × width of face. Occipital carina complete dorsally, not joined with hypostomal carina being obliterated upper base of mandible.

Mesosoma. Length of mesosoma 1.8 × its height. Pronotal keel rather fine, almost absent, situated in middle of pronotum. Mesoscutum highly and perpendicularly elevated above pronotum, its median lobe weakly protruding forwards, weakly convex anteriorly, and with short and wide obtuse anterolateral corners (dorsal view). Mesoscutum mostly glabrous, with rather sparse, more or less long and almost erect pale setae arranged narrow along notauli and laterally; entirely densely granulate; with two distinct and convergent posteriorly carinae medioposteriorly. Notauli anteriorly distinct, wide and crenulate, very shallow in posterior 0.3. Prescutellar depression deep, rather short, with three carinae, finely rugulose-reticulate, 0.3 × as long as scutellum. Scutellum entirely densely and rather finely granulate, convex, with distinct lateral carinae. Mesopleuron mostly finely reticulate-coriaceous, with small and almost smooth areas. Subalar depression very shallow, wide, finely reticulate-areolate. Precoxal sulcus distinct, narrow, curved, crenulate, running along anterior half of lower part of mesopleuron. Propodeum with very short and wide lateral tubercles, with more or less distinctly delineated by carinae and granulate basolateral areas, its rest part coarsely and transversely striate with rugosity, with areola delineated by rather fine carinae.

Wings. Fore wing 3.9 × as long as wide. Vein r arising almost from middle of pterostigma. 3-SR: r: SR1: 2- SR = 21: 4: 20: 14. Second submarginal cell not narrowed distally, its length 3.8 × maximum width, 1.5 × length of first subdiscal cell. 1-SR+M vein weakly curved. Vein CU1a almost interstitial. Hind wing vein M+CU 0.5 × as long as vein 1-M. Vein m-cu distinctly antefurcal, weakly curved and strongly oblique towards base of wing.

Legs. Hind coxa dorsally distinctly transversely striate, widely and densely granulate at rest part, without basoventral tooth but with corner. Hind femur distinctly and densely granulate-coriaceous, 3.2 × as long as wide. Hind tibia apically without spines on outer side. Dorsal surface of hind tibia with rather short, dense and semi-erect setae, their length 0.7–1.0 × maximum width of tibia. Hind tarsus 0.8 × as long as hind tibia. Hind basitarsus 0.6 × as long as second-fifth segments combined. Second segment of hind tarsus 0.5 × as long as basitarsus, as longer as fifth segment (without pretarsus).

Metasoma. Petiole (lateral view) almost straight ventrally, dorsally rather strongly arched in basal third and straight in apical two-thirds, thickened in basal third; weakly widened in apical fifth (dorsal view), with distinct wide spiracular tubercles in basal third; densely and distinctly striate with dense rugulosity between striae in basal 0.4 and finely striate apically. Length of petiole 3.0 × its apical width (dorsal view), 1.5 × length of propodeum. Second and following tergites without separate laterotergites. Median length of second and third tergites combined 1.7 × basal width of second tergite, as long as their maximum width. Second suture absent. Second and third tergites almost entirely and very densely finely granulate, basally with fine and rather short striation, almost smooth narrowly apically. Fourth-sixth tergites very finely and very densely granulate in basal halves and almost smooth in apical halves. Ovipositor straight. Ovipositor sheath 2.1 × as long as petiole, 0.8 × as long as metasoma, 1.4 × as long as mesosoma, 0.7 × as long as fore wing.

Colour. Body reddish brown. Antennae yellow to pale brown, flagellar segments narrowly infuscate apically. Palpi dark brown. Legs reddish brown, middle coxa almost entirely yellow. Ovipositor sheath brownish yellow in basal 0.6 and black in apical 0.4. Fore wing distinctly and widely maculate; subbasal cell crossed by dark fascia on its narrowest part. Pterostigma dark brown, pale yellow in basal 0.4.

Male. Unknown.

Material examined. Holotype: female, China, Hainan Prov., Jianfengling , 22.XI.2008, Tan Jiangli, No. 200805314 ( ZJUH).

Comparative diagnosis. This new species belongs to the S. rusticulus Wilkinson ( S. urios Nixon ) species group. Spathius wuae sp. nov. is similar to S. prusias Nixon , but differs in having the notauli finely present in posterior 0.3 (absent in S. prusias ), scutellum not strongly convex (strongly convex in S. prusias ), propodeum with areas rather distinctly delineated by carinae (indistinctly delineated in S. prusias ), and hind coxa with basoventral corner (without corner in S. prusias ).

Etymology. The species is named in honour of Prof. Wu Yanwu, the well-known Chinese hymenopterist.

Distribution. China (Hainan).