Toxomerus intermedius (Hull)

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 : 38

Toxomerus intermedius (Hull)

( Figs. 29, 104, 105, 106)

Mesogramma intermedia Hull, 1949a: 77 (descr.).

Mesograpta intermedia Fluke, 1956: 224 (cat.).

Toxomerus intermedius Thompson et al., 1976: 51 (cat. & n.comb.); Metz & Thompson, 2001: 228, 236 (key & redescr.).

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 brown except basal 1/3 yellow; pro- and mesotibiae yellow; metatibia brownish. Wing extensively bare; alula broader than cell BM appically, microtrichose. Abdomen with yellow maculae on 3 rd and 4 th terga broadly extending to lateral margin ( Fig. 29). Surstylus with pointed apex; postanal process not distinct; aedeagus enlarged, proeminent dorsally; superior lobe somewhat rounded ventrally with short dorsal extension, with scattered hairs and long setae along anteroventral margin, with small lobe posteriorly with hairs. Female genitalia: 9 th tergum with a semicircle black macula with a discret concavity anteriorly; epiproct as kidney form; cercus slender; hypoproct rounded, triangular posteriorly; 9 th sternum as in Fig. 105; three rounded spermatecae similar in size ( Figs. 104–106).

Length. Body 9.6–10.4 mm, wing 8.4–9.7 mm.

Type material examined. Holotype. PERU. Mesogramma intermedia , female ( CNC).

Other material examined. PERU. Madre de Dios: Manu , ♀, Wayne N. Mathis ( USNM) ; Cuzco: Quiencemil , ♀, 13–31/VIII/1962, L. Pena ( USNM) . BRAZIL. Rio de Janeiro: Itatiaia , ♀, Barreto ( USNM) . São Paulo: Juquia , ♀, I/43, J. Lane ( CNC) .

Geographical record. Tropical South America.