Revision of the Oriental species of the genus Sphegina Meigen, 1822 (Diptera: Syrphidae) Author Steenis, Jeroen Van C7F0D01C-B182-4B93-AF73-E4154367B535 Research Associate, Naturalis Biodiversity Center, Leiden; Hof der Toekomst 48, 3823 HX Amersfoort, the Netherlands. jvansteenis@syrphidaeintrees.com Author Hippa, Heikki 546524AD-3BD1-4830-842F-EEEE7DF4799B Zoological Museum, Biodiversity Unit, FI- 20014 University of Turku, Finland. heikki.hippa@gmail.com Author Mutin, Valeri A. 625E0F27-4538-417D-9155-6141947F04EA Amur State University of Humanities and Pedagogy, Komsomolsk-na-Amure, 681000, Russia. valerimutin@mail.ru text European Journal of Taxonomy 2018 2018-12-20 489 1 198 journal article 22082 10.5852/ejt.2018.489 79a76a5f-97b3-47cc-9bff-086a712cf3e2 3830537 B234C53F-BB56-4F3D-B400-F214E19DCF90 Sphegina ( Asiosphegina ) amamiensis Shiraki, 1968 Sphegina amamiensis Shiraki, 1968: 193 . Type locality: Amami, Japan ( holotype , ♂ , NIAES). Differential diagnosis Sphegina (Asiosphegina) amamiensis is strikingly different from all other species studied here due to the wide bifid lobe on the male sternum IV which is situated on the right side, in all other species having a similar lobe it is situated on the left. Furthermore, it is characterized by the following: frontal prominence short; face black; mouth edge dark brown; basoflagellomere oval, arista short pilose; scutum with pollinose pattern; scutellum with setae rather long and closely set; vein dm-cu slightly oblique; pro- and mesotarsus with tarsomeres 4 and 5 black; metafemur black and yellow biannulate; tergum I with an oblique row of light yellow setae at lateral margin; tergum III with red-brown fascia on anterior ½; sternum IV posteriorly on the right side with a large subtriangular lobe having a widely bilobed apex. Material examined JAPAN • ♂ ; “ Amami / Oshima / Mt Yuwan ”; “ V–3 –1953 / Ryukyu Is. / T . Shiraki ”; “ Sphegina holotype / amamiensis ♂ n.sp. / Det T . Shiraki ”; “ holotype ” [red label]; photos of holotype in lateral, dorsal and ventral view studied; NIAES .