Myiocephalus niger Fischer, 1957,

Tan, Jiangli, Achterberg, Cornelis Van, Tian, Xiaoxia & Zhang, Ruonan, 2019, Revision of Myiocephalus Marshall (Hymenoptera: Braconidae: Euphorinae), with description of one new species, Zootaxa 4700 (1), pp. 117-131: 121-122

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Myiocephalus niger Fischer, 1957


Myiocephalus niger Fischer, 1957 

Figs 17–35View FIGURES 17–20View FIGURES 21–30View FIGURES 31–35

Myiocephalus niger Fischer, 1957: 14–16  ; Shenefelt 1969: 116; Belokobylskij 2000: 372; Lozan et al. 2011: 6 [examined]. Loxocephalus niger  ; Tobias, 1986: 247 (transl. p. 432); Bergamesco et al. 1995: 17.

Material. 3 ♀ + 1 ♂ ( NWUX, RMNH), “ NW China: Shaanxi, Liangfengya, Foping , N33.09° E107.90°, 20.vii.– 26.xi.2017, 1729 m, Y[ellow] Mal. trap, Tan JL & Tan QQ, NWUX”GoogleMaps  ; 1 ♀ ( RMNH), “ I [taly], Abruzzo, AO, Campo di Giove, Tavola Rotanda , 1400 m, [1]988, P.L. Scaramozinno ”  ; 1 ♀ ( RMNH), “ Netherlands: Gld., Nunspeet, Mal. trap, 19.vii.2003, B. v. Aartsen, RMNH’04”  ; 1 ♂ ( RMNH), “ Bulgaria, Rila Mts ”, “k. Maloviza , 23.vii.1982, A. Zaykov”; 1  1 ♂ ( RMNH), “BG: Rhodopi, Selishte ,, A. Zaykov ”  .

Short diagnosis. Length of malar space of ♀ about equal to basal width of mandible ( Fig. 28View FIGURES 21–30; of ♂ approx. 1.2 ×); occipital carina dorsally distinctly below upper level of eye and straight laterally ( Fig. 28View FIGURES 21–30); basal half of first metasomal tergite straight laterally and nearly parallel-sided in dorsal view, without laterope visible ( Fig. 24View FIGURES 21–30); hypopygium of ♀ largely membranous ventrally, unsclerotized, protruding latero-posteriorly and comparatively short bristly setae ( Fig. 25View FIGURES 21–30); only apical third of exserted ovipositor slender in lateral view ( Figs 17, 20View FIGURES 17–20); mesosoma  laterally and legs mainly dark brown ( Figs 17View FIGURES 17–20, 31View FIGURES 31–35).

Redescription. Specimen from China (Shaanxi), ♀, length of fore wing 3.8 mm, and of body 5.5 mm.

Head. Antenna with 28 segments and 1.2 × as long as fore wing, length of third segment 1.2 × fourth segment, third, fourth and penultimate segments 5.5, 4.5 and 2.1 × as long as wide, respectively ( Figs 29, 30View FIGURES 21–30); length of max- illary palp equal to height of head, segments slender ( Fig. 28View FIGURES 21–30); eye 4.1 × as long as temple in dorsal view; temples directly and linearly narrowed behind eyes ( Fig. 27View FIGURES 21–30); OOL:diameter of posterior ocellus:POL = 10:3:10; vertex and frons largely smooth and shiny, in front of ocelli and vertex medio-posteriorly partly coriaceous; in front of anterior ocellus with depression ( Figs 26, 27View FIGURES 21–30); occipital carina complete and dorsally remaining far below upper level of eyes ( Fig. 28View FIGURES 21–30); combined length of clypeus and face (measured from ventral rim of antennal socket to ventral border of clypeus) 1.1 × minimum width of face; face mainly very finely coriaceous, with some rugulae and pale yellowish setae, and with satin sheen ( Fig. 26View FIGURES 21–30); clypeus convex, medio-ventrally lobe-shaped protruding over slightly concave and thin ventral rim ( Figs 26, 28View FIGURES 21–30), medially remotely and finely punctate and laterally with some rugulae; anterior tentorial pits large ( Fig. 26View FIGURES 21–30); malar suture deep, narrow and straight; length of malar space 0.9 × basal width of man- dible, malar space concave in anterior view ( Fig. 26View FIGURES 21–30); mandible slender, strongly twisted ( Figs 26, 28View FIGURES 21–30), outer side convex and with deep basal depression ( Fig. 28View FIGURES 21–30), its second tooth medium-sized and acute ( Fig. 26View FIGURES 21–30).

Mesosoma  . Length of mesosoma  1.4 × its height; side of pronotum largely smooth, but oblique groove crenulate anteriorly, ventrally with some rugulae and posteriorly with some crenulae ( Fig. 23View FIGURES 21–30); mesopleuron antero-dorsally densely striate and partly costate ( Fig. 23View FIGURES 21–30), posteriorly partly superficially striate, remainder shiny and largely smooth; prepectal carina absent postero-laterally; precoxal sulcus absent except for shallow depression posteriorly; episternal scrobe linear, long and posteriorly deep ( Fig. 23View FIGURES 21–30); mesosternum sparsely setose, convex and shiny; mesosternal suture shallow, narrow and smooth; notauli absent except for indistinct impression and mainly smooth anteriorly ( Figs 22, 23View FIGURES 21–30), mesoscutum very sparsely setose, flattened, moderately shiny and its posterior half aciculate ( Fig. 22View FIGURES 21–30); scutellar sulcus smooth and deep ( Fig. 22View FIGURES 21–30); scutellum convex, smooth (except some aciculae antero-laterally) and shiny, medio-posteriorly convex, smooth and no depression; metapleuron coriaceous-rugulose ( Fig. 23View FIGURES 21–30); propodeum triangularly depressed medially, anteriorly smooth and shiny, remainder rugulose or finely rugose, and anterior face hardly separated from posterior face ( Fig. 22View FIGURES 21–30).

Wings. Fore wing: 2-M unsclerotized; 1-R1 1.1 × longer than pterostigma; marginal cell slender Fig. 21View FIGURES 21–30); r:3- SR+SR1:2-SR = 5:67:15; vein r issued  submedially from pterostigma; vein SR1 slightly curved basally ( Fig. 21View FIGURES 21–30); 1-CU1 hardly widened and oblique; cu-a vertical; 1-CU1:2-CU1 = 3:11; basal and subbasal cells of fore wing similarly setose as other cells. Hind wing: M+CU:1-M:1r-m = 40:3:10; basal half of M+CU unsclerotized.

Legs. Middle and hind legs very slender (tibia and tarsus about 2.5 × longer than femur, tibia approx. 4 × longer than coxa; Figs 17, 20View FIGURES 17–20); fore leg normal, tibia nearly 3 × as long as coxa; length of femur, tibia and basitarsus of hind leg 7.0, 18.8 and 15.6 × as long as their maximum width; hind tibial spurs 0.2 × as long as basitarsus.

Metasoma. First tergite 3.6 × longer than its maximum width, basal half subpetiolate, laterope invisible, slightly widened basally, flat (except minute depression near adductor) and smooth; posterior half convex, subparallelsided but gradually narrowed posteriorly ( Fig. 24View FIGURES 21–30); first tergite open ventrally ( Fig. 18View FIGURES 17–20) and laterope deep and large; following segments smooth, compressed and shiny, third–eighth tergites concave medio-apically ( Figs 17, 20View FIGURES 17–20); sternites folded medially ( Fig. 19View FIGURES 17–20), fifth sternite aciculate, medio-posteriorly with long setae and strongly protruding ( Figs 19, 20View FIGURES 17–20, 25View FIGURES 21–30) and hypopygium membranous medially, protruding posteriorly and with apical fringe of comparatively short bristly setae ( Fig. 25View FIGURES 21–30); second metasomal suture obsolescent; ovipositor sheath rather robust, parallel-sided and narrowed apically, setose part 0.15 × as long as fore wing (but dorso-basally glabrous); ovipositor compressed, widened in lateral view, except its slender apical third ( Figs 20View FIGURES 17–20, 25View FIGURES 21–30).

Colour. Black; palpi, mandible, pedicellus, ventrally scapus, fore tibia and fore basitarsus mainly pale yellowish; face, tegulae, remainder of legs and of antenna, pterostigma, most veins of fore wing, and metasoma (except first tergite and ovipositor sheath) mainly brown to dark brown ( Fig. 17View FIGURES 17–20); wing membrane weakly infuscated.

Variation. Length of fore wing 3.8–4.0 mm, and of body 5.5–5.8 mm; antenna with 28(1) or 29(1) segments; first tergite 3.6–3.9 × as long as its maximum width.

Male. Length of fore wing 3.3 mm, and of body 4.5 mm; antenna with 28 segments; length of malar space 1.2 × basal width of mandible; only sternites of basal half of metasoma folded medially and third–eighth tergites weakly concave posteriorly.

Biology. Unknown.

Distribution. West Palaearctic ( Austria, Belarus, * Bulgaria, Czech Republic, Italy, Netherlands, NW Russia), and East Palaearctic (* China (Shaanxi), Far East Russia) regions. Collected near forested peatbog at less than 100 m above sea level ( Netherlands) up to 1730 m ( China; montane forest).

Notes. The specimens from China have the first metasomal tergite slenderer (3.6–3.9 × as long as its maximum width; 3.0–3.5 × in European M. niger  ) and are partly darker (tegulae, middle and hind femora (largely), tibiae (except narrowly basally and apically) and tarsi (except darkened telotarsus) dark brown; brown or brownish yellow in European M. niger  ), but the differences are relatively minor and considered to be intraspecific.


National Museum of Natural History, Naturalis














Myiocephalus niger Fischer, 1957

Tan, Jiangli, Achterberg, Cornelis Van, Tian, Xiaoxia & Zhang, Ruonan 2019

Myiocephalus niger

Belokobylskij, S. A. 2000: 372
Bergamesco, P. & Pennacchio, F. & Scaramozzino, P. L. & Tremblay, E. 1995: 17
Tobias, V. I. 1986: 247
Shenefelt, R. D. 1969: 116