Relictanum fiametta (Hull, 1943) Hull, 1943

Miranda, Gil Felipe Gonçalves, Marshall, Stephen A. & Skevington, Jeffrey H., 2014, Revision of the genus Pelecinobaccha Shannon, description of Relictanum gen. nov., and redescription of Atylobaccha flukiella (Curran, 1941) (Diptera: Syrphidae), Zootaxa 3819 (1), pp. 1-154 : 92-93

Relictanum fiametta (Hull, 1943) comb. nov.

Map 1.

Baccha fiametta Hull, 1943 . Hull, 1943a: 75, 82 (fig.13, male abdomen). Type locality: Panama, Canal Zone, Barro Colorado. Holotype male CNC. Hull, 1949a: 153 (redescription), 194 (fig. 13, male abdomen).

Ocyptamus fiametta . Thompson et al. 1976: 18 (catalog citation).

Male. Head: Dark brown. Face covered by sparse white pollen except concentrated laterally, white pilose but sparse to bare towards tubercle apex. Gena with sparse white pollinosity, with sparse short white pile anteriorly, bare posteriorly. Lunule pale dorsal to antennal insertions and pale dorsal to central macula. Frontal triangle with dull white pollen medially, and with lateral silver white pollen continuous from face, black pilose; frontal prominence protuberant. Vertical triangle with a median row of black pile ending dorsal to anterior ocellus; ocellar triangle ~1.5 times its length from posterior eye margin. Eye contiguity as long as vertical triangle length. Eye posterior sub-triangular indentation at level of antennal insertion. Antennal insertions confluent. Basoflagellomere oval with ventral ½ pale. Dorsal ⅓ of occiput with dull black pollen, ventral ⅔ with silver white pollen; dorsal ⅓ with a row of simple black pile; ventral ⅔ with 2–3 rows of scale-like white pile, anterior rows shorter.

Thorax: Scutum dark brown, mainly dull brown-pollinose, except white on notopleuron, pollen concentrated anterior to scutellum; scutum black pilose, except white and slightly longer on notopleuron, some white pile intermixed anterior to scutellum, and with anterior row of longer shining white pile. Scutellum dark brown, subscutellar fringe normal and white. Pleuron dark brown, microtrichia longer on anterior ½ of katatergite; pleuron white pilose, very few pile on the katepimeron. Plumula short and white. Calypter white. Halter stem yellow, capitulum orange.

Wing: Hyaline, light brown on sc cell, entirely microtrichose; alula hyaline, basally 1.7 times to apically 3.3 times as broad as c cell, entirely microtrichose.

Legs: Brown, apex of femora and base of tibiae pale. Second to 5th metatarsomeres light brown; pile mainly black, white on lateral row of longer pile on mesofemur and on metacoxa; with black setae ventrally on apex of mesotibia and on mesobasitarsomere.

Abdomen: Dark brown; around 3.4 times as long as thorax. First tergite pile white, pile longer laterally. Second tergite narrow and very long, length 8 times minimum width, with median long narrow rectangular macula of dull black pollen extending to lateral margin subapically; 2nd tergite mainly with short, appressed and black pile, except pile slightly longer, erect and white on baso-lateral ⅔. Third tergite trapezoidal and long, length 3.7 times minimum width, pale on baso-lateral corners; 3rd tergite with central triangular macula of dull black pollen, and with short, appressed and black pile. Fourth tergite rectangular and wide, with pale baso-lateral corners, with pair of median oval spots of dull black pollen; remaining characteristics as on 3rd. Fifth tergite short, rectangular and wide, with a central small dull pollinose spot; remaining characteristics as on 3rd. Genitalia: Not dissected.

Female: Female unknown.

Length. 10mm; wing 7mm.

Distribution. Panama (Canal Zone).

Material examined. PANAMA. Canal Zone, Barro Colorado, Holotype Baccha fiametta Hull CNC nº19272, Frank M. Hull collection C.N.C. 1973 (1 ♂, Holotype Baccha fiametta , CNC Diptera 229098).