Toxomerus floralis (Fabricius)

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, Zootaxa 2179, pp. 1-72 : 35-36

Toxomerus floralis (Fabricius)

Syrphus floralis Fabricius, 1798: 563 (descr.); Wiedemann, 1830: 145 (redescr.); Kertész, 1910: 114 (cat.).

Scaeva floralis Fabricius, 1805: 253 (descr.).

Syrphus quadrifasciatus Bigot, 1857: 337 (descr.); Aldrich, 1905: 367 (cat.); Kertész, 1910: 125 (cat.); Fluke, 1957: 156 (cat.); Thompson, 1981: 90 (syn.).

Mesogramma subannulata Loew, 1866: 157 (descr.); Curran, 1930: 2 (key); 1934: 399 (key); Hull, 1943b: 8, 25, 35 (key, & ill.).

Mesogramma floralis Schiner, 1868: 347 ; Curran, 1925: 307 (syn.; 1930: 3 (key); 1934: 401 (syn.); Hull, 1943b: 9, 24, 40 (key & ill.).

Mesograpta subannulata Loew, 1872: 120 ; Osten Sacken, 1875: 49 (cat.); Miskimen & Bond, 1970: 66; Telford, 1973: 225.

Toxomerus subannulatus Kertész, 1910: 150 (cat. & n. comb.); Thompson et al., 1976: 55 (cat.).

Mesogramma flamminea Hull, 1941c: 312 (descr.); 1943b: 6 (key & var.).

Mesograpta floralis Fluke, 1956: 223 (cat.).

Toxomerus floralis Thompson et al., 1976: 50 (cat. & n.comb.).

Male. Head: face 1/3 as long as eye width, yellow, shiny except sparsely white pollinose and pilose laterally; gena black; frontal triangle yellow, white pilose; vertical triangle black, white and bronze pollinose, black pilose; occiput black, silver pollinose, with thick white pile, with a short row of brownish pile superiorly; antenna yellow, white pilose, arista brown.

Thorax: postpronotum yellow; proepisternum black, white pollinose; proepimeron yellow; scutum black except broadly yellow laterally, bronze pollinose except for bluish-white pollinose medial vitta, yellow pilose; scutellum black with yellow margins, yellow pilose; anterior anepisternum black, long yellow pilose; posterior anepisternum black on anterior 1/2, yellow pilose dorsally, posterior ½ yellow, yellow pilose; katepisternum black except dorsal 1/3 yellow, dull, yellow pilose; anepimeron black; plumula yellow, calypter yellowish with yellowish fringe except brown fringe on dorsal lobe; posterior mesothoracic pleuron (katepimeron, meron, katatergum, anatergum and postscutellum) black, anatergum brownish posterodorsally; methatoracic pleuron yellow; metasternum brown; halter yellow. Legs: pro- and mesocoxae black on basal 2/ 3, yellow apically, yellow pilose; metacoxa yellow, yellow pilose; trochanters yellow, yellow pilose; pro- and mesofemora yellow, yellow pilose, mesofemora black pilose on apical extremity; metafemur yellow except for black annulus on apical 1/3, yellow and black pilose; tibiae yellow, yellow pilose; metatibia yellow and black pilose; pro- and mesotarsi yellow, yellow pilose; mesotarsus yellow pilose, except black pilose ventrally; metatarsus brown, black pilose. Wing: hyaline, extensively microtrichose, bare only: on basal 1/2 or less of cell C, basal 1/5 of cell R1, basal 2/3 or less of cell R and basal 3/4 or less of cell BM; alula broader than cell BM appically, microtrichose.

Abdomen: terga yellow and black pilose; 1 st tergum black except yellow anteriorly and laterally; 2 nd tergum black with medial yellow fascia extended latero-anteriorly; 3 rd to 4 th terga black with sub-medial quadrangular yellow macula continuous from lateral and anterior margin with medial yellow vitta; 5 th tergum yellow with black macula medially or all yellow. Male genitalia: surstylus broad dorsally, with scattered short setae; postanal process little distinct; aedeagus slender dorsally; superior lobe somewhat trapezoid with setae medio-ventrally.

Female. Similar to male except for the frons black, white pollinose, black pilose. Anterior anepisternum bare.

Female genitalia: 9 th tergum with not distinct black macula; cercus slender; hypoproct somewhat triangular; three roundeds spermatecae similar in size.

Length. Body 6.0–7.0 mm, wing 5.0–6.0 mm.

Material examined. MEXICO. Guadalupe: Raizet Field , ♂ & 7 ♀, X/1950, N. H. L. Krauss ( USNM) ;

Quintana Roo: Felipe Carrillo Puerto , 4 ♂, 11–13/X/1986, R. J. McGinley ( USNM) ; Chiapas: Tuxtla Gutierrez , 2 ♀, P. J. Spangler ( USNM) . GUATEMALA. Tikal Ruins , 3 ♂ & ♀, G. F. & S. Hevel ( USNM) . EL SALVADOR. Santa Ana: 3 ♂, 19/VIII/1972, G. F. & S. Hevel ( USNM) . NICARAGUA. Santo Maria de Ostuma : ♂, XI/1959, N. H. L. Krauss ( USNM) . CUBA. La Palma : Pinar del Rio, ♀, XI, 1955, N. H. L. Krauss ( USNM) . JAMAICA. Worthy Park : 3 ♂ & ♀, 18–25/II/1970, R. E. Woodruff ( USNM) . VENEZUELA. Merida: Merida, ♂, 2/VI/1976, A. S. Menke & D. Vicent ( USNM) ; Zulia: El Tucuco , ♀, 5–6/VI/ 1976, A. S. Menke & D. Vicent ( USNM) ; Aragua: Puerto de Cata , ♂, 10–11/VI/1976, A. S. Menke & D. Vicent ( USNM) ; Lara: Carora , 2 ♂ & 2 ♀, A. S. Menke & D. Vicent ( USNM) . BRAZIL. Amazonas: Manaus , ♀, X– XI/1969, Exp. Perm. Amaz. ( MZSP) ; ♂, 27/XI – 8/XII/1985, T. J. Nenry ( USNM) . Pará: Belém , ♀, VII/1954, N. H. L. Krauss ( USNM) ; 19 ♂, 15 ♀, 01–29/IV/1967, 7–26/V/1967, Y. Sedman ( USNM) ; Altamira , ♂ & ♀, P. Spangler & O. Flint ( USNM) . Pernambuco: Caruaru , 4 ♂, VII/1974 ( MZSP) . Goiás: Lago Feia , 3 ♀, 25/IV/1972, L. Knutson ( USNM) ; ♀, Planaltina, 25/IV/1972, L. Knutson ( USNM) . Aragarças , ♂, 28/I/1953, Moacir Alvarenga ( MNRJ) ; Brasília: Distrito Federal , 2 ♂, 7/III/1952, A. G. Silva ( MNRJ) ; Mato Grosso: Maracaju , ♂, V/1937, Serviço Febre Amarela ( MNRJ) ; Minas Gerais: Lagoa Santa , ♂, 18/I/1977, L. Knutson ( USNM) ; Paracatu , ♀, VII/1960, Exp. Formosa ( MNRJ) . Espírito Santo: Vitória , ♂ & ♀, VII/1961, N. L. H. Krauss ( USNM) ; ♀, M. Leitão ( MNRJ) ; Linhares , 12 ♂ & 3 ♀, IX/1970, P. C. Elias ( MZSP) ; ♀, VII/1972, P. C. Elias ( MNRJ) ; Baixo Guandu , ♀, IX/1970, P. C. Elias ( MZSP) . Rio de Janeiro: Floresta da Tijuca , ♂, III/1961, N. L. H. Krauss ( USNM) . Gávea , 2 ♂, 30/IV/1936, Lacerda ( MNRJ) ; Deodoro , ♂, 15/V/1936, W. Zikán ( MNRJ) ; São Paulo-Estrada Rio, km 47, 28 ♂, 9♀, 9/I/1945, 10/I/1945, 11/ I/1945, 12/I/1945, 15/I/1945, 17/I/1945 ,, 24/I/1945, B. Ramos ( MNRJ) ; ♂, 25/VI/1948, J. Miranda ( MNRJ) ; Amaro , ♂, II/1949, J. Lane ( MZSP) ; ♀, XII/1950, J. Lane ( MNRJ) ; Bocaína , 2 ♂, III/1954, Dalcy & R. Barros ( MNRJ) ; São Paulo: ♀, 4/IV/1965, V. N. Alin ( USNM) ; Rio Claro , ♀, 14/I/1977, L. Knutson ( USNM) ; Mongagua , ♀, 24/VIII/1961, N. L. H. Krauss ( USNM) ; Santos , ♂, VI/1961, N. L. H. Krauss ( USNM) ; Salesópolis , 2 ♀, III/1969, N. Papavero ( MZSP) ; Paraná: Curitiba , ♂, ♀, III/1954 ,, VII/1961, N. L. H. Krauss ( USNM) . PARAGUAY. Villarrica : ♂, XI/1937, F. Schade ( USNM) .

Geographical record. Widespread, from United States to southern South America.