Toxomerus tibicen (Wiedemann) (Figs. 158–160) Syrphus tibicen Wiedemann, 1830: 127 (descr.); Williston, 1886: 312 (cat.). Syrphus sinuatinervis Macquart, 1850: 455 (descr.); Williston, 1886: 311 (cat.); Kertész, 1910: 128 (cat.); Fluke, 1957: 156 (cat. & syn.). Mesogramma tibicen Schiner, 1868: 347; Curran, 1930: 2 (key); 1934: 398 (key). Toxomerus tibicen Kertész, 1910: 150 (cat. & n. comb.); Thompson et al., 1976: 55 (cat.); Metz & Thompson, 2001: 228, 248 (key & redescr.). Toxomerus ornatus Sack, 1941: 103 (1951: 99) (descr.); Metz & Thompson, 2001: 248 (syn.). Mesograpta tibicen Fluke, 1956: 231 (cat.). Toxomerus sinuatinervis Thompson et al., 1976: 55 (cat.); Metz & Thompson, 2001: 248 (syn.). Diagnosis. Face 1/3 as long as eye width, yellow; frontal triangle yellow. Proepimeron yellow; scutum black except broadly yellow laterally; scutellum brown with yellow margins, black pilose; anepimeron black. Pro and mesofemora yellow, metafemur yellow on basal 1/2 and brown on apical 1/2; pro and meso tibiae yellow, metatibia brownish. Wing extensively bare; alula broader than cell BM appically, microtrichose. Abdomen with yellow maculae on 3 rd and 4 th terga isolated from lateral margins. Surstylus pointed latero-apically; postanal process little distinct; aedeagus not so enlarged, proeminent dorsally; superior lobe somewhat rectangular, with hairs along anterior margin, with smal lobe medially with hairs. Female genitalia: 9 th tergum with somewhat oval black macula pointed posteriorly; epiproct slender; cercus slender; hypoproct somewhat triangular; 9 th sternum as in Fig. 159; three rounded spermatecae, one of them smaller (Figs. 158–160). Length. Body 9.5–12.0 mm, wing 7.0–9.6 mm. Material examined. BRAZIL. Minas Gerais: Caldas, 5 ♂, 8/I/1967, J. Becker, O. Roppa and O. Leoncini (MNRJ); Rio de Janeiro: Teresópolis, ♀, XII/1939, Freitas (MNRJ); ♂, 20/VIII/1944, Travassos (MNRJ); Petrópolis, 3 ♂, II/1956, D. Albuquerque (MNRJ); Grajaú, ♀, 27/IV/1941, Lopes & Oliveira (MNRJ); Corcovado, ♂, IV/1934, Trav. & Lopes (MNRJ); Itatiaia, ♂ & 2 ♀, I/1948, C. d’Andretta (MZSP); ♂ & 2 ♀, 8/I/1950, Travassos & Dalcy (MNRJ); 2 ♀, 6/I/1954, W. Zican (MNRJ); São Paulo: Bocaina, 2 ♂ & 5 ♀, IX/1969, Alvarenga and Seabra (MNRJ); Eug. Lefevre, 2 ♂ & 5 ♀, 1/XI/1937, Lopes (MNRJ); Cotia, ♀, 27/XII/1940, A. G. Silva (MZSP); M. das Cruzes, ♀, XI/1939, M. Carrera (MZSP); Osasco, ♂, XI/1940, J. Lane (MZSP); H. Florestal, ♀, XII/1951, E. Rabello (MZSP); Embú, ♂, 15/II/1946, F. Lane (MZSP); Campos do Jordão, M, 3 ♀, 23/I/1936, XII/1945, XII/1955, J. Lane (MZSP, MNRJ); Barueri, ♀, 8/XI/1954, K. Lenko (MZSP); S. Roque, ♂, XII/1946, J. Lane (MNRJ); Paraná: Curitiba, 7 ♂ & 5 ♀, IV/1940, Claret (USNM); P. Grossa, 3 ♂ & 2 ♀, 20/X/1986 (DZUP); S. José Pinhais, ♀, 3/XI/1986 (DZUP); Deodoro, ♂, XII/1944, Natschbach (MZSP); Rio Negro, ♂, 7/V/1929 (MNRJ); Santa Catarina: Nova Teutônia, ♂, 13/VI/1938, F. Plaumann (MNRJ); 27 ♂, 25 ♀, VI/1964, X/1964, VII/1965, X/1971, F. Plaumann (USNM). Rio das Antas, ♀, I/1953, Camargo (MZSP). Rio Grande do Sul: Derrubadas, ♀, 26/04/2003, M. N. Morales (UNISC); São Borja, 2 ♂ & 2 ♀, IX/1952, Agnelo C. Filho (MNRJ). PARAGUAY. Mboneno: 7 ♂ & 25 ♀, IX/1940, F. Schade (USNM). ARGENTINA. Misiones Dos de Mayo: 15 ♂ & 19 ♀, XII/1973, M. F. (USNM). Geographical record. South America.

Published as part of Borges, Zuleica M. & Couri, Marcia S., 2009, Revision of Toxomerus Macquart, 1855 (Diptera: Syrphidae) from Brazil with synonymic notes, identification key to the species and description of three new species 2179, pp. 1-72 in Zootaxa 2179 on page 57