中国优食蚜蝇属六新种记述(双翅目:食蚜蝇科)

SIX NEW SPECIES OF THE GENUS EUPEODES OSTEN SACKEN (DIPTERA: SYRPHIDAE) FROM CHINA

本文记述我国优食蚜蝇属Eupeodes(syn.Metasyrphus)6新种。属下分类采取Vockeroth(1969,1986)的分亚属概念。文中记述的新种全部属于优食蚜蝇亚属Eupeodes(s.str.),并将本亚属内其他5种食蚜蝇重新组合,同时对有些种的中名也作了相应修改。新种模式标本保存于上海农学院。 新组合种:1.硕翅优食蚜蝇Eupeodes(Eupeodes)macropterus(Thomson)。

In this paper six new species of the genus Eupeodes Osten Sacken, 1877 are described from China. For subdivision of the genus Eupeodes I have adopted the concept of Vockeroth (1969, 1986). All the described species in this paper belong to the subgenus Eupeodes (s. str.). Five new combinations are proposed in Eupeodes (s. str.), i. e. Eupeodes macropterus (Thomson, 1869), Eupeodes pseudonitens (Dusek et Laska, 1980), Eupeodes flavofasciatus (Ho, 1987), Eupeodes sinuatus (Ho, 1987), Eupeodes taeniatus (Ho, 1987). All type specimens are deposited in the insect collection of the Shanghai Agricultural College.1.Eupeodes (Eupeodes) epicharus He, sp. nov.Male. Length 11.5mm. Angle of frons at approximation of eyes 100 degrees. Face (Fig. 1A) occupying 49% of head width. Postocular orbits near vertical triangle narrow (Fig.1C). The abdominal pattern can be seen in Fig 1F. This species is similar to E. (E.) flavcfasciatus (Ho) and E. (E.) sinuatus (Ho), but differs from them in: angle of frons at approximation of eyes rather broad; postocular orbits rather narrow; genitalia (Figs. 1F-H) different.Holotype , Manas,Xingjinag 12-Ⅶ-1986, Li Qingxi.2.Eupeodes (Eupeodes) eosus He, sp. nov.Male. Length 12mm. Angle of frons at approximation of eyes 90 degrees. Face (Fig.2A) occupying 45% of head width. Postocular orbits near vertical triangle medium width (Fig.2C). The abdominal pattern can be seen in Fig.2E. This species is similar to E. (E.)flavofasciatus (Ho), but differs from it in: all yellow abdominal markings (spots and bands) extending over the lateral margin of tergite with their upper corners; discal cell and cubital cell of wing with narrow bare areas (Fig.2D); head of pyxis broader than high (Fig.2G).Holotype , Nanjing, Jiangsu, IX-1984, Chu Siping; paratypes 2, as above, X-1984. 3.Eupeodes (Eupeodes) erasmus He, sp. nov.Male. Length 9-10mm. Angle of frons at approximation of eyes 85 degrees. Face (Fig.3A) occupying 46% of head width. Postocular orbits near vertical triangle medium width (Fig.3C). The abdominal pattern can be seen in Fig.3E. This new species' is rather similar to E. (E.) sinuatus (Ho), but differs from it in the following characters: long hairs on apical 2 / 3 of front femur black; hind tibiae with a faint black submedian annulation; yellow band on 3rd abdominal tergite rather broader than black band separating yellow bands from each other (Fig. 3E).Holotype , Nanjing, Jiangsu, XI-1984, Chu Siping; paratypes 2 , same as the holotype, X-1984.4.Eupeodes (Eupeodes) chengi He, sp. nov.Male. Length 10mm. Angle of frons at approximation of eyes 85 degrees. Face Fig.4A) occupying 45% of head width. Postocular orbits near vertical triangle narrow (Fig.4C). The abdominal pattern can be seen in Fig.4E. This species is rather similar to E. (E.) nitens (Zetterstedt), but different from it in the following characteristics: hairs of face all pale; long hairs on the basal part of front femur yellow; lateral margin of tergite 5 yellow; genitalia (Figs.4 F-H) different.Holotype , Longwang Shan, Anji, Zhejiang, 28-V-1987, He Jilong.5.Eupeodes (Eupeodes) angustus He, sp. nov.Female. Length 10mm. Dusted spots on frons along eye margin elliptical, but dustiness not intensive. Dark color on frons extending beyond 2 / 3 of distance between front ocellus and base of antennae (Fig. 5A). The abdominal pattern can be seen in Fig.5E. The new species is very similar to E. (E.). pseudonitens Dusek et Laska and E. (E.) taeniatus (Ho), but differs from the latter two species in: postocular orbits very broad (Fig. 5C); black band on tergite 5 reaching lateral margin of tergite; scutellumpredominately pale haired.Holotype , Nanchang, Jiangxi, 17- I -1980.6.Eupeodes (Eupeodes) harbinensis He, sp. nov.Female. Length 11mm. Dusted spost on front elliptical, occupying 9 / 10 of the width of frons. Dark color of frons reaching 2 / 3 of distance between front ocellus and base of antennae (Fig.6A). The abdominal pattern can be seen in Fig.6E. This species is rather similar to E. (E.) taeniatus (Ho), but may be easily distinguished by the following c