PROC. ENTOMOL. SOC. WASH. 89(3), 1987, pp. 425-439 TAXONOMIC OBSERVATIONS ON UNITED STATES TEPHRITIDAE (DIPTERA), WITH DESCRIPTIONS OF NEW SPECIES F. L. Blanc and Richard H. Foote (FLB) 5309 Spilman Ave., Sacramento, California 95819; (RHF) Systematic Ento-mology Laboratory, BBII, Agricultural Research Service (Retired), present address: Box 166, Lake of the Woods, Locust Grove, Virginia 22508. Abstract. —Sewen new species of Tephritidae from the United States are described: Eutreta modocorum Blanc, E. navajorum Blanc, Gymnocarena flava Foote, Trupanea vi-ciniformis Foote, Urophora claripennis Foote, U. setosa Foote, and Valentibulla dodsoni Foote. Gymnocarena bicolor Foote is transferred to Mylogymnocarena (n. comb.), Pa-roxyna americana Hering is a new synonym of P. genalis (Thomson), and Xanthaciura chrysura (Thomson) is further described. A review of Gymnocarena and Mylogymno-carena and taxonomic observations on all included species are presented. While identifying large numbers of fruit flies in the course of preparing a handbook of the Tephritidae of North America north of Mexico, we have encountered a number of taxonomic problems and hitherto un-described species. The present paper pre-sents our solutions to some of these prob-lems and the descriptions of seven new species which need names prior to publi-cation of the handbook. Letter abbreviations representing the var-ious private and institutional collections from which specimens were borrowed for this study, and in which type material of the newly described species is deposited, are listed in our acknowledgment section. Eutreta Loew Icaria Schiner, 1868:276 (type species, Try-peta sparsa Wiedemann, 1830: 492; preocc. Saussure, 1853). Eutreta Loew, 1873: 276 (type species, Try-peta sparsa Wiedemann, 1830: 492, des. by Coquillett, 1910: 543). Stoltzfus (1977) clarified the status of this genus and its component species in his ex-cellent revision of the New World fauna. Since then, three additional species have been discovered: E. coalita Blanc (Foote and Blanc, 1979) from California, and the fol-lowing ones from California and Arizona. Eutreta modocorum Blanc, New Species Fig. 1 Diagnosis. — In profile, oral margin only slightly produced; costal margin without hyaline spots; antenna short, not attaining oral margin; wing black; pleuron pinkish amber. FtmalQ.— Head: General color pink; frons pinkish gray; lunule dark gray; antenna pink to light brown, 0.4 mm long, reaching about % of way to oral margin; arista black, amber near base; face pink, turning more pale gray near median and oral margins, without spots; oral margin only slightly produced; parafacial with whitish pollinosity; palpus pink with 8-10 antero ventral setae ranging from white near base to dark brown near tip; lower fronto-orbitals, anterior upper fronto-orbitals, ocellars, and inner verticals brownish black but lighter near base; genal
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