New records of Micropezidae (Diptera, Acalyptratae) from South Korea, with description of a new species of Rainieria Rondani Author Kim, Wonwoong 0000-0001-5837-1048 College of Literature, Science, and the Arts, University of Michigan-Ann Arbor, Michigan, United States of America. wonwoong @ umich. edu; https: // orcid. org / 0000 - 0001 - 5837 - 1048 wonwoong@umich.edu Author Weele, Ruud Van Der Kloosterlaan 6, NL 4111 LG Zoelmond, the Netherlands Author Lee, Seunghwan Insect Biosystematics Laboratory, Department of Agricultural Biotechnology, Seoul National University, Seoul 151 - 921, Republic of Korea. & Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul 151 - 921, Republic of Korea text Zootaxa 2022 2022-08-24 5178 1 26 40 journal article 129661 10.11646/zootaxa.5178.1.2 66ceb082-2ee4-4e5f-bec4-950a35c67451 1175-5326 7021824 7EB6ABDB-A942-4DB9-8E2B-B29844FFDB2A Compsobata dentigera ( Loew, 1854 ) ( Figs 4A–B , 7A, 7C , 8B ) Calobata dentigera Loew, 1854: 24 (sp. nov.) Compsobata dentigera Ozerov, 1987: 553 (key) Compsobata (Compsobata) dentigera Hirashima, 1989: 796 (cat.) Neria dentigera Ozervov, 1999: 506 (key.); Ichige, 2018: 39 (diag.) Diagnosis. Body length 8.1–8.4 mm in males, 8.2–10.6 mm in females; overall coloration black and orange; head glubose, dark brown with exception of cream white parafacial; head chaetotaxy : 1 frontal, 1 orbital, 1 postocellar, 1 outer vertical bristles present; thorax dark brown dorsally, transitioning to brighter brown in lateral side; dorsal area with sparse, short yellow setae; katepisternum covered with short pale silvery setae, plus dense long weak yellow bristles posteroventrally; legs uniformly yellow with dark brown ring in posterial apices of hind femora, hind tibia without dorsal spines; wings uniformly light brown with no conspicuous markings, halter light brown; tergites dark brown with orange posterior corner, yellow suberect setae present; epandrium yellowish brown; male S5 heartshaped, with characteristic indentation in inner margins of each arm ( Figs 7C ). Material examined. South Korea : Gangwon-do : 3♂ , 2♀ , Jeongseon-gun , Nam-myeon , Yupyeong-ri , Mt. Mindungsan , 17.vi.2011 , coll: Ho-Yeon Han et al. ( NIBR ) ; Jeollanam-do : 1♀ , Gurye-gun , Mt. Jirisan , Nogodan , 29.vii.1999 , coll: So-Yoon Won ( SNUM ) ; 1♂ , Gurye-gun , Mt. Jirisan , Nogodan , 23.v.1999 , coll. K. S. Woo ( SNUM ) ; 1♂ , 1♀ (in copula) Gurye-gun , Mt. Jirisan , Nogodan , 16–20.vi.2009 , coll: K.K.Kim & O.S.Kim ( NIBR ) ; 1♀ , Gurye-gun , Mt. Jirisan , Piagol , 28.vii.1999 , coll: Hyun-mi Lee ( SNUM ) ; Jeollabuk-do : 1♀ , Gochang-gun , Simwon-myeon , 24.vi.1993 , coll: O.Y. Kwon ( SNUM ) . FIGURE 7. Male genitalic structures of Korean Micropezidae species. A, Compsobata dentigera , male terminalia; B, Micropeza soosi , male terminalia; C, Compsobata dentigera , male sternite V; D, Micropeza soosi , male sternite V. FIGURE 8. Wings of Korean Micropezidae species. A, Micropeza soosi ; B, Compsobata dentigera ; C, Rainieria triseta ; D, Rainieria tenebrosa ; E, Mimegralla suzukiana . Distribution. South Korea * (Gangwon-do, Jeollanam-do , Jeollabuk-do ), Japan ( Hokkaido ), Russia (Far East), Mongolia Biology. Korean specimens were usually collected at mountainous environments above 1000m altitude.A group of this species was observed at a mountaintop flat with short Poaceae plants at Hadong-gun, Jeollanam-do (Sangsu Kim, personal observation ). Remarks In East Asia , Compsobata huashanica Li, Liu & Yang, 2012 is similar, but can be distinguished from this species by the apical incision of the surstylus, difference in the shape of S5, and absence of a small indentation in the inner margin of the arms of S5 ( Fig. 7B ).