Dacnusa (Dacnusa) maculipes Thomson, 1895

Zheng, Min-Lin & Chen, Jia-Hua, 2017, A new species and three newly recorded species of the dacnusine genus Dacnusa Haliday (Hymenoptera: Braconidae: Alysiinae) from China, Zootaxa 4232 (4), pp. 511-522 : 516-518

Dacnusa (Dacnusa) maculipes Thomson, 1895

(Figure C)

Dacnusa (Rhizarcha) maculipes Thomson, 1895 , 20: 2321.

Dacnusa maculipes: Dall Torre, 1898 , 4: 27; Szépligeti, 1904, 22: 194; Nixon, 1937, 4: 66; Griffiths, 1967, 16(7/8)(1966): 566; Shenefelt, 1974: 1093; Belokobylskij, 2003, 53(2): 361.

Rhizarcha maculipes: Nixon, 1948 , 84: 217; Fischer, 1962, 14: 36; Tobias, 1962, 31: 132.

Dacnusa (Dacnusa) maculipes: Tobias et Jakimavicius, 1973 , 2: 23–38, 1986: 7–231; Quicke et al., 1997: 25; Tobias, 1998: 327; Ku, 2001: 1–283; Papp, 2004, 21: 145, 2007, 53(1): 10, 2009, 55(3): 237.

Material examined. 1 male, Longtan, Liupan mountain, Ningxia Province, China, 15.viii.2001, coll. Zhihui Lin ; 1 female, Jingyuan , Liupan mountain, Ningxia Province, China, 16.viii.2001, coll. Guanghong Liang ; 1 male, Jingyuan , Liupan mountain, Ningxia Province, China, 19.viii.2001, coll. Jianquan Yang ; 1 male, Wanghuanan , Liupan mountain, Ningxia Province, China, 20.viii.2001, coll. Guanghong Liang ; 5 males, Migang peak, Liupan mountain, Ningxia Province, China, 22.viii.2001, coll. Qinge Ji, Guanghong Liang, Jianquan Yang and Zhihui Lin ; 2 females and 5 males, Erlonghe , Liupan mountain, Ningxia Province, China, 23.viii.2001, coll. Jianquan Yang and Quanxiu Shi ; 1 female, Northern suburbs, Xining, Qinghai Province, China, 3.vi.2008, coll. Qiong Zhao ; 1 male, Datong , Qinghai Province, China, 20.vi.2008, coll. Qiong Zhao ; 1 male, Xinglong mountain , Gansu Province, China, 2.viii.2008, coll. Qiong Zhao ; 1 female and 1 male, Heng mountain , Datong, Shanxi Province, China, 29.viii.2010, coll. Junli Yao ; 1 female and 4 males, Mohe , Heilongjiang Province, China, 26.vii.2011, coll. Xiaohui FIGURE C (1–9) Dacnusa (Dacnusa) maculipes Thomson , rec. nov. , ♀, 1. head (frontal view); 2. head (dorsal view); 3. mandible; 4. fore wing; 5. mesosoma (lateral aspect); 6. mesosoma (dorsal aspect); 7. irst tergite (dorsal aspect); 8. antenna (scapus, pedicellus, 1st–3rd flagellomeres); 9. hind tibia and tarsus.

Dong and Minlin Zheng ; 4 females and 5 males, Zhuozi mountain , Wulanchabu, Inner Mongollia Province, China, 5.viii.2011, coll. Yingying Zhao, Xiaohui Dong, Minlin Zheng and Junli Yao ; 3 females and 6 males, Wusutu , Huhehaote, Inner Mongollia Province, China, 8.viii.2011, coll. Minlin Zheng and Junli Yao .

Description. Female. Body 1.8 mm long.

Head. Antenna with 19 flagellomeres, first and penultimate flagellomeres 4.5 and 2.8 times as long as wide, respectively; in dorsal view, head 2.1 times as broad as long; eye almost as long as temple; OOL: OD: POL= 4:1:2; face densely setose; mandible (Fig. C3) with 3 teeth, second tooth sharply pointed, other two teeth obtuse.

Mesosoma. Mesosoma 1.3 times as long as wide; sides of pronotum almost glabrous and mainly smooth except some rugosity on its posterior part; mesoscutum (Fig. C6) densely pubescent and slightly rugose; notauli restricted to declivous fore part of mesoscutum; medio-posterior depression of mesoscutum rather short, subelliptic and shallow; mesopleuron mainly smooth, densely pubescent on its anterior and posterior part; precoxal sulcus wide and long, distinctly crenulate (Fig. C5); propodeum entirely and densely pubescent; metapleuron covered with dense long pubescence mainly directed towards hind coxa (Fig. C5).

Wings. Pterostigma of fore wing long and narrow, distinctly widened towards its apex (Fig. C4); vein 1-R1 relatively short, 0.4 times as long as pterostigma; vein 3-SR+SR1 distinctly not reach to the apex of fore wing; vein m-cu distinctly antefurcal.

Legs. Hind femur 4.5 times as long as broad distally; hind tibia 1.1 times as long as hind tarsus; third tarsomere of hind tarsus and its telotarsus equal in length.

Metasoma. First tergite (Fig. C7) strongly widened towards its apex, 1.1 times as long as its apical width, densely covered with pubescence, and finely striated; remaining tergites smooth and sparsely setose; ovipositor slightly protruding behind tip of metasoma, ovipositor sheath and hind basitarsus almost equal in length.

Colour. Head mainly dark reddish-brown; antenna dark brown except first 3–4 segments distinctly lighter than posterior segments; mandible yellow except teeth yellowish-brown; clypeus brown; labrum brownish-yellow; maxillary and labial palp pale yellow. Mesosoma black; legs yellow except telotarsus brown. First tergite black, remaining tergites dark brown.

Variation. Body length 1.6–1.9 mm, antenna with 19–20 flagellomeres, body dark reddish-brown to black.

Male. Similar to female but pterostigma of fore wing darker. Body length 1.4–1.9 mm, antenna with 19–21 flagellomeres.

Biology. Known as endoparasitoids of more than 80 species in Agromyzidae , and Hydrella griseola Fallen of Ephydridae (Griffth 1967 and Yu et al. 2012).

Distribution. Austria, Azerbaijan, Belgium,,Britain, Bulgaria, China (North Palaearctic, first record), Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, Japan, Korea, Lithuania, Macedonia, Mongolia, Netherlands, Poland, Portugal, Romania, Russia, Slovakia, Spain, Sweden, Switzerland, Yugoslavia.

Remarks. Dacnusa (Dacnusa) maculipes is very similar to D. (D.) confinis Ruthe , but can be relatively easy distinguished by the difference of fore wing venation, especially the shape of pterostigma and marginal cell.