Zaglyptogastra exilis, Li & Achterberg & Chen, 2020

Li, Yang, Achterberg, Cornelis van & Chen, Xue-xin, 2020, A new genus and eight newly recorded genera of Braconinae Nees (Hymenoptera, Braconidae) from China, with descriptions of fourteen new species, ZooKeys 1038, pp. 105-178 : 105

Zaglyptogastra exilis sp. nov. Figures 37 , 38

Material examined.

Holotype: ♀, China, Hainan Prov., Jianfengling , 1.IV.1984, Gu Maobin, No. IOZ(E)1964587 (IZCAS).

Diagnosis.

This new species is very similar to Zaglyptogastra abbotti Ashmead, 1900 [Indonesia; Malaysia; Thailand], but can be separated from the latter by the following characters: scape blackish brown (brown or yellowish brown dorsally in Z. abbotti ); wing membrane yellow, greyish brown apically, stigmal spot rather large, enclosing entire vein CU1b (greyish brown area of membrane narrower, and stigmal spot small); T V with striae medio-basally (smooth, only with few punctures, without striae).

Description.

Holotype, ♀, length of body 18.6 mm, of fore wing 17.2 mm, of ovipositor sheath 17.0 mm.

Head. Antenna incomplete, with 63 antennomeres remaining; third antennomere 1.4 and 1.6 × longer than fourth and fifth, respectively, the latter 0.8 × longer than wide; malar suture with dense short setae (Fig. 38i ); inter-tentorial distance: tentorio-ocular distance = 7: 5; clypeus largely smooth; eye rather emarginated (Fig. 38g ); face coarsely rugose, with some long setae (Fig. 38g ); shortest distance between eyes: head width = 24: 42; frons smooth, moderately depressed behind antennal sockets, with a median groove (Fig. 38h ); vertex smooth, but with some short setae; minimum distance between posterior ocelli: minimum diameter of elliptical posterior ocellus: minimum distance between posterior ocellus and eye = 5: 7: 12; temples largely smooth except for a few weak punctures, and with dense long setae laterally, subparallel immediately behind eyes (Fig. 38h ).

Mesosoma. Length of mesosoma 2.0 × its height (Fig. 38c ); notauli impressed in anterior half of mesoscutum (Fig. 38d ); scutellar sulcus moderately wide and deep, with crenulae (Fig. 38d ); scutellum with some short setae posteriorly; propodeum smooth, with sparse setae medially, and with dense long setae laterally (Fig. 38d ).

Wings. Fore wing (Fig. 38a ): pterostigma 3.5 × longer than wide; SR1: 3-SR: r = 39: 35: 7; 1-SR+M slightly curved subbasally, and 1.4 × longer than 1-M; 2-SR: 3-SR: r-m = 14: 35: 15; 3-CU1 distinctly thickened posteriorly; cu-a slightly postfurcal. Hind wing (Fig. 38b ): 1r-m 1.2 × longer than SC+R1; apex of C+SC+R with nine thickened basal bristles; base with a medium-sized glabrous area distal to vein cu-a.

Legs. Length of fore femur: tibia: tarsus = 34: 39: 49; length of fore basitarsus 4.7 × its maximally width; length of hind femur: tibia: basitarsus = 37: 64: 23 (Fig. 38f ); length of hind basitarsus 6.3 × its maximum width.

Metasoma. Length of T I 1.3 × its apical width, median area convex and longitudinally rugose (Fig. 38e ); lateral grooves of T I strongly crenulate (Fig. 38e ); apical width of T II 1.8 × as long as its median length; T II strongly rugose but antero-lateral areas smooth (Fig. 38e ); T II with large medio-basal area which ends near posterior margin of T II; antero-lateral areas of T II developed and smooth, anterior grooves wide, with a few crenulae (Fig. 38e ); second suture deep and wide, with crenulae, more or less straight medially (Fig. 38e ); T III-V with strong antero-lateral areas and grooves, and with strong crenulate transverse subposterior grooves; T III and T IV strongly rugose but antero-lateral areas smooth (Fig. 38e ); T V weakly rugose antero-medially, smooth laterally and posteriorly; T VI and T VII largely smooth; ovipositor sheath as long as fore wing.

Colour. Head and mesosoma largely yellow (Fig. 37 ); antenna, eye and mandible apically black (Fig. 38g ); legs largely yellow, tarsi apically and claws black (Fig. 38f ); ovipositor sheath black, with yellow setae (Fig. 37 ); T I-IV blackish brown (T II yellowish brown medio-basally), T V-VII yellowish brown (Fig. 38e ); wing membrane 2/3 basally yellow and 1/3 apically brownish (in hind wing up to posterior margin); stigmal spot yellowish brown and reaching vein 2-1A; pterostigma yellow except for extreme apex; veins largely yellow, fore wing veins 1-SR, 3-CU1, apical half of 3-SR and 2-M, SR1, 3-M, hind wing veins SR apically, 2-M medially and apically yellowish brown (Fig. 38a, b ).

Biology.

Unknown.

Distribution.

China (Hainan).

Etymology.

Named after the rather slender body: exilis is Latin for slender.

Figures

Figure 37. Zaglyptogastra exilis sp. nov., ♀, holotype, habitus, lateral view.

Figure 38. Zaglyptogastra exilis sp. nov., ♀, holotype a fore wing b hind wing c mesosoma, lateral view d mesosoma, dorsal view e metasoma, dorsal view f hind leg, lateral view g head, anterior view h head, dorsal view i head, lateral view j scapus outer side, lateral view k apex of ovipositor, lateral view.