Toxomerus norma (Curran)

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 : 43

Toxomerus norma (Curran)

( Figs. 33, 119, 120, 121)

Mesogramma norma Curran, 1930: 10 (descr.); 1934: 399 (key); Hull, 1943b: 13, 29 (key & ill.).

Mesogramma mulio Hull, 1941c: 311 (descr.); 1943b: 6, 29 (key & ill.).

Mesograpta norma Fluke, 1956: 227 (cat.).

Mesograpta mulio Fluke, 1956: 226 (cat.).

Toxomerus norma Thompson et al., 1976: 53 (cat. & n. comb.).

Toxomerus mulio Thompson et al., 1976: 52 (cat. & n. comb.); Metz & Thompson, 2001: 228, 238 (key &redescr.), syn. nov.

Diagnosis. Face 1/2 as long as eye width, yellow; frontal triangle yellow. Proepimeron yellow; scutum black except broadly yellow laterally; scutellum yellow, black pilose; anepimeron brown, yellow dorsomedially. Pro and mesofemora yellow, metafemur yellow with black annulus; pro and meso tibiae yellow, metatibia yellow to brownish. Wing extensively microtrichose; alula broader than cell BM appically, microtrichose. Abdomen with 3 rd and 4 th terga entirely yellow on basal 2/3 which sometimes contain two small medial brown to black spots ( Fig. 33). Surstylus broader apicad; postanal process 3/4 as long as surstylus; aedeagus enlarged, proeminent dorsally; superior lobe somewhat quadrangular with short posterodorsal extension, forked distad, with scattered hairs, and setae longer along ventral margin.

Female genitalia: 9 th tergum somewhat a heart shape black macula; epiproct slender; cercus slender; hypoproct as an rouded arch; 9 th sternum as in Fig. 120; three elliptical spermatecae similar in size ( Figs. 119–121).

Length. Body 8.2–10.0 mm, wing 6.3–7.6 mm.

Discussion. The synonymies were based on the examination of the male holotypes of Mesogramma mulio and Mesogramma norma .

Type material examined. Holotype. PANAMA. Corozal : Mesogramma norma , male, 16/I/1929, C. H. Curran ( AMNH).

Other material examined. MEXICO. Cordoba : ♂, 17/XII/1967, Fredk Knab ( USNM) ; ECUADOR. Napo: Santa Cecília , ♀, 17/V/1967, Ashley B. Gurney ( USNM) ; VENEZUELA. Aragua: Ocumare de La Costa , ♀, 10–11/VI/1976, A. S. Menke & D. Vincent ( USNM) ; 2 ♂, 12/VI/1976, A. S. Menke & D. Vincent ( USNM) ; Zulia: Puerto de Cata 2 ♂, 10–11/VI/1976, A. S. Menke & D. Vincent ( USNM) ; PARAGUAY. Villarrica : ♂, IX/1938, F. Shade ( USNM) ; BRAZIL. Pará: Belém , ♀, 1/VI/1967, Y. Sedman ( USNM) ; Araguaia , ♂, VII/1959, M. Alvarenga ( DZUP) . Pernambuco: Caruaru , ♀, VII/1974 ( MZSP) . São Paulo: Barueri , ♂, 23/III/1957, K. Lenko ( USNM) . Paraná: Curitiba , ♀, IV/1976, H. S. Telford ( DZUP) .

Geographical record. Widespread, from Mexico to southern South America.