Campyloneurus stigmosus, Li & Achterberg & Chen, 2020

Li, Yang, Achterberg, Cornelis Van & Chen, Xue-Xin, 2020, Two genera Campyloneurus Szépligeti and Iphiaulax Foerster in China, with the descriptions of fourteen new species (Hymenoptera, Braconidae, Braconinae), Zootaxa 4884 (1), pp. 1-67 : 37-40

Campyloneurus stigmosus sp. nov.

Figs 25–26

Type material. Holotype. CHINA • ♀; Guangdong Province, Guangzhou ; 1 Nov. 1989; J.H. He leg.; ZJUH 896611 . Paratype. CHINA • 1♀; Fujian Province, Chong’an Tongmu ; 790–1155m; 10 Apr. 1960; G. T. Jin & Y.M. Lin leg.; SHEM 34023744 .

Diagnosis. This new species is very similar to C. gibbiventris Enderlein, 1920 , but can be separated from the latter by the following characters: head and mesosoma mainly black, with ivory spots (head and mesosoma entirely black in C. gibbiventris ); fifth tergite coarsely sculptured (smooth); ovipositor shorter, 0.2 × as long as body (0.4 ×); metasomal tergites mainly black, with whitish yellow spots (entirely black); wing membrane smoky grey, pterostigma and veins dark brown (wing membrane, pterostigma and veins blackish brown).

Description. Holotype, ♀, length of body 4.5 mm, of fore wing 4.8 mm, of ovipositor sheath 0.8 mm.

Head. Antenna with 40 antennomeres; apical flagellomere acute and weakly protruding apically, 2.4 × longer than its maximum width ( Fig. 26l ); first flagellomere 1.4 × longer than its maximum width, 1.2 and 1.3 × longer than second and third, respectively, the latter 1.3 × longer than wide; malar suture weakly sculptured and sparsely short setose ( Fig. 26i ); clypeus height: inter-tentorial distance: tentorio-ocular distance = 3: 13: 6; clypeus sparsely short setose; eye weakly emarginated ( Fig. 26g ); width of hypoclypeal depression 1.5 × its height; face 0.8 × longer than wide, coarsely punctate and with a few weak striae near eyes, sparsely setose laterally ( Fig. 26g ); eye height: shortest distance between eyes: head width = 15: 13: 30; frons smooth, weakly concave behind antennal sockets, with a strong median groove ( Fig. 26h ); vertex smooth, with sparse short setae; minimum distance between posterior ocelli: minimum diameter of elliptical posterior ocellus: minimum distance between posterior ocellus and eye = 7: 7: 10; in dorsal view length of eye twice temple; temples linearly narrowed behind eyes ( Fig. 26h ).

Mesosoma. Length of mesosoma 1.4 × its height ( Fig. 26c ); notauli only impressed anteriorly ( Fig. 26d ); mesoscutum with dense short setae ( Fig. 26d ); scutellar sulcus narrow and deep, with sparse crenulae ( Fig. 26d ); scutellum sparsely short setose; metanotum strongly convex medially ( Fig. 26d ); propodeum smooth, without medio-longitudinal carina or groove, sparsely setose medially, and densely long setose laterally ( Fig. 26d ).

Wings. Fore wing ( Fig. 26a ): pterostigma 3.7 × longer than wide; SR1: 3-SR: r = 31: 22: 5; 1-SR+M rather weakly curved subbasally; 2-SR: 3-SR: r-m = 11: 22: 10; angle between 1-SR and C+SC+R about 75°; cu-a interstitial, vertical. Hind wing ( Fig. 26b ): SC+R1: 2-SC+R: 1r-m = 6: 2: 3.

Legs. Length of fore femur: tibia: tarsus = 19: 22: 30; length of hind femur: tibia: basitarsus = 26: 37: 15; length of femur, tibia and basitarsus of hind leg 3.3, 6.7 and 4.9 × their maximum width, respectively; hind tibial spurs 0.4 and 0.5 × as long as hind basitarsus.

Metasoma. Length of first metasomal tergite 0.9 × its apical width, median area convex and coarsely sculptured, without medio-longitudinal carina posteriorly, lateral grooves sparsely crenulate ( Fig. 26j ); second tergite largely coarsely sculptured, triangular medio-basal area smooth (but with some crenulae at outer margin), attached to medio-longitudinal carina apically, the latter not reaching posterior margin of second tergite ( Fig. 26e ); apical width of second tergite 2.4 × its median length, antero-lateral areas of second tergite rather small and smooth, anterior grooves wide and with weak sparse crenulae apically ( Fig. 26e ); second suture wide and deep, crenulate, nearly straight medially ( Fig. 26e ); apical width of third tergite 3.6 × its median length; third–fifth tergites coarsely sculptured, with antero-lateral areas (fifth tergite weak) and subposterior groove ( Fig. 26e ); sixth and seventh tergites largely smooth; ovipositor sheath 0.2 × as long as fore wing.

Colour. Largely black ( Fig. 25 ); frons laterally (up to eyes), face laterally, area surrounding malar suture, posterior half of middle lobe of mesoscutum, mesopleuron anteriorly and scutellum white or ivory ( Figs 26c, 26d, 26g, 26h ); first metasomal tergite (except for median area), second tergite laterally (except posteriorly), third tergite antero-laterally and posteriorly, fourth–seventh tergites posteriorly whitish yellow ( Fig. 26e ); wing membrane smoky grey, pterostigma and veins dark brown ( Figs 26a, 26b ).

Variation. Length of body of female 4.5–6.0 mm, of fore wing of female 4.8–6.2 mm, and of ovipositor sheath 0.8–1.0 mm; length of mesosoma 1.5 × its height; spots of head pale yellow in paratype; pronotum laterally and lateral lobes of mesoscutum anteriorly whitish yellow or black.

Biology. Unknown.

Distribution. China (Fujian, Guangdong).

Etymology. Named after the multiple spots of the head: “stigmosus” is Latin for “full of marks”.

Figures

FIGURE 25. Campyloneurus stigmosus sp. nov., ♀, holotype, habitus lateral.

FIGURE 26. Campyloneurus stigmosus sp. nov., ♀, holotype. a. fore wing; b. hind wing; c. mesosoma, lateral view; d. meso- soma, dorsal view; e. metasoma, dorsal view; f. hind leg, lateral view; g. head, front view; h. head, dorsal view; i. head, lateral view; j. first metasomal tergite, dorsal view; k. scapus outer side, lateral view; l. apex of antenna; m. apex of ovipositor, lateral view.