Megischus Brulle , 1846

Ge, Si-Xun, Shi, Hong-Liang, Ren, Li-Li & Tan, Jiang-Li, 2021, Description of a new species of Megischus Brulle (Hymenoptera, Stephanidae), with a key to the species from China, ZooKeys 1022, pp. 65-77 : 65

Genus Megischus Brulle, 1846

Megischus Brullé, 1846: 537. Type species (designated by Viereck 1914): M. annulator Brullé, 1846 [= M. furcatus (Lepeletier & Serville, 1825)].

Megischus Brullé, 1846: van Achterberg 2002: 53-168; Aguiar and Johnson 2003: 469-482.

Bothriocerus Sichel, 1860: 759. Type species: Bothriocerus europaeus Sichel, 1860 (by monotypy) (= Stephanus anomalipes Foerster, 1855, according to Madl 1991).

Diagnosis.

Medium to large size. Temple without pale yellowish streak behind eye. Pronotum robust without transverse protuberance. First subdiscal cell of fore wing comparatively narrow basally, approximately as wide as first discal cell or narrower; vein 1-SR of fore wing differentiated with first discal cell present because of presence of vein 1-SR+M; vein 1-M and vein 2-SR straight or nearly so. Hind wing without trace of vein cu-a. Hind coxa without dorsal tooth; hind femur with two distinct teeth; hind tibia narrowed basally and inner side usually with wide sub-medical depression, evenly rounded ventrally and without oblique striae or rugae on the outer sides; hind tarsus with three tarsomeres. Sternite I not differentiated from tergite I. Tergite I 4.2-17.6 × as long as its apical width, cylindrical, distinctly longer than tergite II; tergite II more or less petiolate and sculptured basally. Ovipositor sheath with ivory subapical band.

Distribution.

Cosmopolitan. The distribution of Chinese species is illustrated in Fig. 20 .

Note.

Megischus specimens are still poorly collected. The known diversity in China compared with the diversity outside China is low and higher numbers of species can be expected.

Figures

Figure 20. Distribution map of Megischus species from China (map of China from: http: // bzdt. ch. mnr. gov. cn /).