(Figs. 36, 68, 69, 70, 134, 135, 136)

Mesogramma polygraphica Hull, 1940a: 249 (descr.); 1943b: 10, 30 (key & ill.).

Mesograptapolygraphica Fluke, 1956: 228 (cat.).

Toxomerus polygraphicus Thompson et al., 1976: 54 (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, black pilose; vertical triangle black, bronze pollinose, black pilose; occiput black, silver pollinose, with thick white pile, with a short row of brownish pile superiorly; antenna yellow to brownish, white pilose, arista brown.

Thorax: postpronotum yellow; proepisternum black, white pollinose; proepimeron black; scutum black except broadly yellow laterally, bronze pollinose except for bluish-white pollinose medial vitta, yellow pilose; scutellum yellow or brownish with yellow margins, yellow and black pilose; anterior anepisternum black, sparsely yellow pilose; posterior anepisternum black on anterior 1/2, bare, posterior ½ yellow, yellow pilose; katepisternum black except dorsal 1/3 yellow, dull, yellow pilose; anepimeron black; plumula yellow, calypter yellowish with yellowish fringe; posterior mesothoracic pleuron (katepimeron, meron, katatergum, anatergum and postscutellum) black, anatergum brownish posterodorsally; methatoracic pleuron brownish to black; 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; metafemur yellow except for black annulus on apical 1/3, yellow and black pilose; pro- and mesotibiae yellow, yellow pilose; metatibia yellow, slightly brownish on basal 1/2, yellow pilose; pro- and mesotarsi yellow to brownish, yellow pilose; metatarsus brown black, 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 interrupt medially, sometimes with brownish-orange fascia anteriorly and posteriorly; 3 rd to 4 th terga black with a lateral trapezoid yellow vittae on anterior 1/3, two sub-lateral yellow macullae and medial yellow vitta extending to posterior margin; 5 th tergum black with arcuate lateral yellow vittae and medial yellow maculae (Fig. 36). Male genitalia: surstylus slightly pointed at apex, with scattered short setae, some long on dorsal surface; postanal process 1/2 as long as surstylus; aedeagus proeminent dorsally and with some projections ventrally; superior lobe somewhat rounded ventrally with short dorsal extension, slightly forked distad, with setae along ventral margin, with small lobe posteriorly with hairs (Figs. 68–70).

Female. Similar to male except for the frons black, bronze pollinose, yellow pilose. Anterior anepisternum with rare short piles.

Female genitalia: 9 th tergum with two stick black macula; epiproct somewhat semielliptical; cercus slender; hypoproct somewhat triangular; 9 th sternum as in Fig. 135; three oval spermatecae similar in size (Figs. 134–136).

Length. Body 7.5–8.5 mm, wing 6.5–7.5 mm.

Type material examined. Holotype. BRAZIL. São Paulo: Batea, Mesogramma polygraphica, female, IX–37, J. Lane (CNC).

Other material examined. BRAZIL. Paraná: Curitiba, ♂, 12/II/1976, H. S. Telford (UFPR); ♂, IV/ 1976, H. S. Telford (UFPR); Santa Catarina: Nova Teutônia, ♂, 5 ♀, 6/VII/1936, 15/III/1937, 30/III/1960, 1/ IV/1960, I/1970, F. Plaumann (CNC); 9 ♂ & 6 ♀, V/1970, XI/1970, F. Plaumann (MZSP).

Geographical record. Peru to southern Brazil.