Zaglyptogastra tricolor, 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 tricolor sp. nov. Figures 39 , 40

Material examined.

Holotype: ♀, China, Yunnan Prov., near Jingdong , 1300 m, 17.III.1957, Bangfeiluofu, No. IOZ(E)1964532 (IZCAS).

Diagnosis.

This new species is very similar to Zaglyptogastra plumiseta (Enderlein, 1920) [Indonesia; Malaysia; Singapore], but can be separated from the latter by the following characters: fore wing vein SR1 relatively long, 1.6 × as long as vein 3-SR (at most 1.1 × in Z. plumiseta ); hind leg yellow, tibia apically and tarsus black brown (entirely black); T I-II yellow, T III yellowish brown, T IV-VII black (uniformly black).

Description.

Holotype, ♀, length of body 13.2 mm, of fore wing 11.3 mm, of ovipositor sheath 12.8 mm.

Head. Antenna incomplete, 55 antennomeres remaining; third antennomere 1.3 and 1.4 × longer than fourth and fifth, respectively, the latter as long as wide; malar suture with dense short setae (Fig. 40i ); inter-tentorial distance: tentorio-ocular distance = 12: 7; clypeus largely smooth; eye rather emarginate (Fig. 40g ); face coarsely sculptured, with some sparse and long setae (Fig. 40g ); shortest distance between eyes: head width = 18: 37; frons smooth, moderately depressed behind antennal sockets, with a median groove (Fig. 40h ); vertex smooth, but with some sparse 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, weakly narrowed immediately behind eyes (Fig. 40h ).

Mesosoma. Length of mesosoma 1.9 × its height (Fig. 40c ); notauli impressed in anterior half of mesoscutum (Fig. 40d ); scutellar sulcus moderately wide and deep, with crenulae (Fig. 40d ); scutellum with some short setae posteriorly; propodeum smooth, with sparse setae medially, and with dense long setae laterally (Fig. 40d ).

Wings. Fore wing (Fig. 40a ): pterostigma 3.5 × longer than wide; SR1: 3-SR: r = 39: 24: 5; 1-SR+M more or less straight, and 1.5 × longer than 1-M; 2-SR: 3-SR: r-m = 13: 24: 11; 3-CU1 distinctly thickened posteriorly; cu-a interstitial. Hind wing (Fig. 40b ): 1r-m 1.2 × longer than SC+R1; apex of C+SC+R with six thickened basal bristles; base with a small glabrous area distal to vein cu-a.

Legs. Length of fore femur: tibia: tarsus = 42: 49: 64; length of fore basitarsus 5.6 × its maximally width; length of hind femur: tibia: basitarsus = 40: 64: 23 (Fig. 40f ); length of hind basitarsus 6.6 × its maximum width.

Metasoma. Length of T I 1.4 × its apical width, median area convex and longitudinally rugose (Fig. 40e ); lateral grooves of T I strongly crenulate (Fig. 40e ); apical width of T II 1.4 × as long as its median length; T II strongly longitudinally rugose but antero-lateral areas smooth (Fig. 40e ); T II with large but weakly raised medio-basal area nearly reaching antero-lateral areas; antero-lateral areas of T II narrow and smooth, anterior grooves narrow, with a few sparse crenulae (Fig. 40e ); second suture deep and wide, with crenulae, straight medially (Fig. 40e ); T III-V with strong antero-lateral areas and grooves, and with strong crenulate transverse subposterior grooves; T III and T IV strongly longitudinally rugose but antero-lateral areas smooth (Fig. 40e ); T V weakly rugose antero-medially, smooth laterally and posteriorly; T VI and T VII largely smooth; ovipositor sheath 1.1 × longer than fore wing.

Colour. Head and mesosoma largely yellow (Fig. 39 ); antenna, eye, surroundings of stemmaticum, stemmaticum and mandible apically black (Fig. 40g, h ); legs largely yellow, fore and middle tarsi apically, hind tibia apically, hind tarsus, and claws black (Fig. 40f ); ovipositor sheath black, with blackish brown setae (Fig. 39 ); T I and T II yellow, T III yellowish brown, T IV-VII black (but posterior margins of T VI and T VII yellow; Fig. 40e ); basal half of wing membrane yellow and apical half blackish brown; stigmal spot blackish brown and reaching vein 2-1A, surroundings of vein 2-SR+M and besides vein r-m subhyaline; basal 3/5 of pterostigma yellow (narrowly brown basally) and apically 2/5 blackish brown; fore wing veins M+CU1, 1-1A, cu-a, 1-M apically, 2-CU1 basally and 2-1A basally yellow, remaining fore wing veins blackish brown, hind wing veins SC+R1 anteriorly, SR (except for external basally blackish brown), 2-M medially and apically blackish brown, remaining hind wing veins yellow (Fig. 40a, b ).

Biology.

Unknown.

Distribution.

China (Yunnan).

Etymology.

Named after the tri-coloured metasoma: tricolor is Latin for "with three colours".

Figures

Figure 39. Zaglyptogastra tricolor sp. nov., ♀, holotype, habitus, lateral view.

Figure 40. Zaglyptogastra tricolor 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.