Microdon dentigiganteum sp. nov. and other Microdontinae species (Diptera: Syrphidae) from Northeast China Author Tian, Jing Author Huo, Ke-Ke Author Zhang, Chun-Tian Author Ren, Bing-Zhong text Zootaxa 2019 2019-12-18 4712 1 65 76 journal article 24556 10.11646/zootaxa.4712.1.4 d9af17ec-891f-41c3-bd11-8067fc2ef6eb 1175-5326 3586838 FA66BC29-1260-486A-B1AD-0E840DFCEF91 Key to the Microdontinae species of Northeast China 1 Propleuron only with microtrichia..................................................... Metadon spuribifasciatus - Propleuron with microtrichia and pile..................................................................... 2 2 Scutellum without calcars ( Figs 6C, D ).................................................................... 3 - Scutellum with calcars ( Figs 3E , 6A )...................................................................... 4 3 Legs brownish black to black, mostly black pilose; abdomen black with cupreous metallic hues ( Fig. 8C ) Microdon auricomus - Legs brownish black to black, basal 1/2 brownish yellow, yellow pilose; abdomen black ( Fig. 8D )........ Microdon ignotus 4 Calcars of scutellum huge, conspicuously longer than 1/2 of the scutellum length ( Fig. 3E ) Microdon dentigiganteum sp. nov. - Calcars of scutellum relatively small, shorter than 1/5 of the scutellum length ( Figs 6B, 6E ).......................... 5 5 Antennal ratio approximately 4.1: 1: 3.6 ( Fig. 5B ); vertex and frons black, yellow pilose; abdomen black ( Fig. 8B )................................................................................................ Microdon analis - Antennal ratio approximately 2.9: 1: 2.2 ( Fig. 5F ); vertex and frons black, mostly black pilose; abdomen black with cupreous metallic hues ( Fig. 8E ).................................................................... Microdon oitanus