Vol. 45 No. 3, 2006

Redescription of Sinolochmostylia sinica Yang, the First Palearctic Member of the Little-Known Family Ctenostylidae (Diptera: Acalyptratae)

Ho-Yeon Han

Department of Life Science, Yonsei University, Maeji-ri 234, Heungup-myeon, Wonju-si, Gangwon-do 220-710, Korea

Ho-Yeon Han (2006) The monotypic genus Sinolochmostylia has been known only by the female holotype of its type species, S. sinica Yang from Zhejiang Province, China. This species is a member of the little-known family Ctenostylidae, which includes 12 described species and 7 nominal genera from the Oriental, Afrotropical, and Neotropical Regions. The discovery of S. sinica in Korea as reported in the present study is the first record of the Ctenostylidae in the Palearctic Region. Male specimens were also discovered for the first time. A redescription based on both sexes with illustrations of the postabdominal structures is provided. The following characteristics were found to be useful for distinguishing S. sinica from other ctenostylids: 1) crossvein R-M situated approximately at basal 1/3 of cell dm; 2) vein R2+3 very short, ending at midlength of wing; 3) costa without an apparent subcostal break; and 4) apical 1/2 of wing entirely dark brown. The possible close relationship of Sinolochmostylia with Nepaliseta and Ramuliseta is also discussed.

Key words: Diptera, Tephritoidea, Ctenostylidae, Lochmostyliinae, Sinolochmostylia sinica.

*Correspondence: Tel: 82-33-760-2254. Fax: 82-33-763-4323. E-mail: hyhan@dragon.yonsei.ac.kr