A taxonomic revision of the genus Xylota Meigen (Diptera: Syrphidae) in Korea Author Jeong, Soo-Hyun Author Han, Ho-Yeon text Zootaxa 2019 2019-08-29 4661 3 457 493 journal article 25863 10.11646/zootaxa.4661.3.3 81a32fc3-9362-4ec2-b507-54859001f1e0 1175-5326 3446340 28EFDB26-4C37-4DA9-ABBB-122083EE396B Xylota spurivulgaris Yang & Cheng (Korean name: jag-eun-ru-ri-heo-ri-kkot-deung-e) Figs 1M, N , 2M, N , 6 J–N, 11I–L, 13M Species new to Korea Xylota spurivulgaris Yang & Cheng, 1998: 215 (type locality: China . Jilin , Mt. Changbai; holotype ♂ , BAUC). Diagnosis. Among Korean Xylota species, X. spurivulgaris looks almost identical to X. coquilletti and X. fo in many characters including their slightly constricted medial portion of abdomen in dorsal view and irregular rows of short and stout black setulae on baso-ventral 1/3 of metatibia ( Fig. 4C ). Males of X. spurivulgaris could be further distinguished by the short calcar on metatrochanter (subequal to basal width) ( Fig. 6K ) while X. fo males do have much longer calcar ( Fig. 4Q ). Unfortunately, we were not able to separate females of these two species ( Figs 1N , 2N ). See also Diagnosis of X. fo . Description of Korean material. MALE . Body length 9.1–10.6mm ; wing length 6.6–7.4mm ; brown to dark brown species. Head black; face with heavily yellowish white pollinosity; frons anterior to eye contiguity with dense yellow pollinosity ( Fig. 1M ); area anterior to ocellar triangle (vertical triangle anterior to ocellar triangle) bare but posterior area covered with yellow pile ( Fig. 1M ). Thorax entirely black; scutum subshiny black with short appressed short yellow pile but posterior half sparsely with longer erect yellow pile mixed with short pile; anterior anepisternum covered with yellowish pollinosity; posterior anepisternum with dense white pollinosity and white pile (upper 1/3 mixed with yellowish pile); katepisternum moderately covered with white pollinosity, dorsal posterior area with white pile; notopleuron with yellow pile; scutal area anterior to wing base with black pile; postalar callus with long yellow pile; metasternum bare with yellowish white pollinosity. Wing hyaline except for pale brown pterostigma ( Fig. 6L ); halter whitish yellow. Legs: femora black; pro- and mesotibiae yellow with subapico-ventral half dark brown area; pro- and mesotarsomeres 1–3 yellow, tarsomeres 4 and 5 brown; metatrochanter ventrally with short calcar (subequal to basal width) ( Fig. 6K ); apico-ventral 1/3 of metafemur with two carinae covered with spinose setulae, remaining ventral area with two rows of spinose setae except for basal 1/5 (anterior row cover whole length but posterior row reach to middle); antero-dorsally and postero-ventrally with long yellowish white pile, apico-dorsal 1/3 area with short brown pile; metatibia dark brown with basal 1/3 yellow, baso-ventral 1/3 with irregular rows of short and stout black setulae; metatarsomeres 1–3 brown, tarsomeres 4 and 5 black ( Fig. 6K ). Abdomen about 3.5x longer than wide, terga 2 posterior slightly constricted ( Figs 2M , 6J ); terga 2 and 3 each laterally with pair of lateral facing triangular areas covered by yellow erect pile other areas of terga 2 and 3 black with appressed short black pile ( Fig. 2M ). Male genitalia ( Figs 11 I–L, 13M): surstylus with dorsal lobe, twice as long as ventral lobe, long finger shaped and slightly bent downward in lateral view, bulged out in middle, densly covered with spinose setulae ( Fig. 11 I–K); ventral lobe of surstylus blunt but distinctly projected with apex setulose ( Fig. 11 I–K); cercus cordated in profile with long pale pile ( Fig. 11 I–K); lingula indistinct ( Fig. 13M ); fenestra large and subtriangular in outline ( Fig. 11J, K ); spur of superior lobe reduced ( Fig. 13M ); superior lobe almost symmetrical ( Fig. 11J, K ); lateral arm of theca dorsally rounded with strong to short club-shaped setae ( Fig. 11J, K ), apico-ventral apex with two small denticles; aedeagus with ejaculatory hood medially with furrow in postero-ventral view, dorsally round ( Fig. 11L ); ejaculatory process short ( Fig. 11L ); ejaculatory apodeme apically enlarged and bowl shaped. FEMALE. See “female description” of X. fo . Material examined. (Males only; for examined female specimens, see relevant portion for X. fo , which has indistinguishable females from X. spurivulgaris ). SOUTH KOREA : Gangwon-do: 1♂ , Hoengseong-gun , Anheungmyeon , Mt. Chiaksan frm Gangrim 4-ri to Cheonjibong , 8. VI .2003 , SW Suk and HS Lee ; 1♂ , Hongcheon-gun , Nae-myeon , Mt. Gyebangsan from unduryeong to 1577m peak, 11.VII.1999 , DS Choi , SK Kim and CH Park ; 1♂ , ditto, 12.VIII.2003 , DS Choi and JS Soh ; 1♂ , Hongcheon-gun , Nae-myeon , Mt. Gachilbong from Sambong- yaksu to 1240m peak, 27.VII.2009 , JM Jung and YB Lee ; Hwacheon-gun , Sanae-myeon , Mt. Gwangdeoksan from Gwangdeok-ri to 1046.3m peak, 29.VIII.2000 , CH Park and DW Kim ; 1♂ , Inje-gun , Mt. Bangtaesan , Sangnam-my- eon, Bangdong-ri, N. of Guryongduck-bong , 1.VIII.1996 , HY Han and HW Byun ; 1♂ , Inje-gun , Girin-myeon , Mt. Jeombongsan from Jindong-ri to 1424m peak, 10.VIII.2001 , Han et al .; 1♂ , ditto, 16. VI .2004 , HW Byun et al .; 1♂ , ditto, 24. VI .2009 , SW Suk et al .; 1♂ , Jeongseon-gun , Gohan-eup , Mt. Hambaeksan from Manhang-jae to 1573m peak, 27.IX.2011 , SW Suk and YB Lee ; 2♂ , Jeongseon-gun , Nam-myeon , Mt. Mindungsan from Yupyeong-ri to 1119m peak N37°16’10” , E128°46’49” , 22.VIII.2011 , YB Lee , DH Kim and HS Lee ; 1♂ , Samcheok-si , Dogye-eup , from Gwangmyeongsa to Sangdeok-ri , b. VI .2003 , DS Choi et al .; 1♂ , Wonju-si , Maeji-ri , Hwaechon , 12. VI .1998 , HY Han and SK Kim ; 1♂ , Wonju-si , Heungeop-myeon , Maeji-ri , Yonsei Univ. Wonju Campus , 11. VI .2000 , SK Kim and CH Park ; 2♂ , ditto, 27.V.2009 , HS Lee ; 1♂ , ditto, 30.V.2009 , DJ Cha , JM Jung and HS Lee ; 2♂ , ditto, 2. VI .2009 , HS Lee et al .; 1♂ , ditto, 18. VI .2009 , YB Lee. Gyeongsangbuk-do : 1♂ , Yeongyang-gun , Irwol-myeon , Mt. Irwolsan from Iljabong to woljabong, N36°48’20” E129°06’17” , 15.VII.2014 , YB Lee et al . Jeollabuk-do : 1♂ , Namwon-si , Sannae-myeon , Mt. Jirisan , Jeongryeongchi , 1,212m , 17.VII–29.VIII.2001 , DS Ku ; 2♂ , ditto, 11.VII–5.IX.2001 , DS Ku ; 1♂ , ditto, 5.IX–30.X.2001 , DS Ku . Distribution. Korea (new record), Japan , Russian Far East. Remarks. This species has been often misidentified as X. coquilletti in the past. Even the only paratype of the X. coquilletti turned out to be a misidentification ( Mutin & Gilbert, 1999 ). They, therefore, identified this paratype as X . amamiensis Shiraki (1968) . However, Mutin & Ichige (2014) later synonymized X. amamiensis with X. coquilletti and described a new species for the paratype of the X. coquilletti as X. danieli . However, Yang & Cheng (1998) already described this species as X. spurivulgaris based on the Chinese type series. The original descriptions and illustrations of X. spurivulgaris and X. danieli , including male genitalic characters, are almost identical for both nominal species, and we believe that such level of similarity is highly likely to indicate conspecifity. However, formal synonymization of X. danielli is pending until a more extensive taxonomic investigation including examination of the type material is conducted. Currently, females of this species are not distinguishable from those of X. fo (see Diagnosis and Specimens examined of X. fo ).