Pelecinobaccha oviphora (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 : 60-61

Pelecinobaccha oviphora (Hull, 1943) comb. nov.

Map 6. Figure 12 (d–h).

Baccha oviphora Hull, 1943 — Hull, 1943a: 73. Type locality: Colombia, Muzo. Holotype female CNC. Hull, 1949a: 232 (fig. 191, female abdomen).

Ocyptamus oviphorus . Thompson et al., 1976: 24 (catalog citation).

Male. Male unknown.

Female. Head: Shining black. Face with sparse white pollen, concentrated laterally, pollen oriented dorsoventrally except for a small pollen patch oriented differently ventral to frontal prominence, entirely white pilose, tubercle large and without pollen. Lunule narrowly pale above antennal insertions, central black macula distinct with small dorsal pale spot, otherwise color confluent with frons. Frons dull white pollinose, with median oval macula of dull dark pollen, pollen absent on dorsal ⅓ and ventro-lateral ⅓, with shining white pollen in small latero-medial spots, mainly black pilose. Antenna pale, scape with thicker pile, basoflagellomere oval long, entirely pale or with dorsal ½ dark brown. Antennal insertions confluent to distinctly separated. Vertex protuberant, without pollen, with a single median row of black pile ending dorsal to posterior ocelli; ocellar triangle ~2 times its length from posterior eye margin, and ~3 occelli-width from lateral eye margin. Occiput mostly with white pollen, pollen concentrated close to eye margin, dorsal ¼ with brown pollen oriented ventro-dorsally; dorsal ⅓ of occiput with posterior row of long simple black pile and an anterior row with shorter pile, middle 2/4 with posterior row of long scale-like white pile and 2–3 anterior rows of shorter simple black pile; ventral ¼ with 2–3 rows of scale-like white pile, anterior rows shorter and some of sometimes black.

Thorax: Black. Scutum dull brown-pollinose with a pair of sub-median vittae of dull blue pollen; scutum black pilose, except for anterior row of inconspicuous shining white pile that is largely interrupted in the middle. Scutellum black, black pilose, subscutellar fringe pile black. Pleuron mostly black, except posterior anepimeron pale; pleuron mostly white pilose except black pilose on anterior anepisternum, dorso-posterior of the posterior anepisternum and a few black pile dorsally on the anterior anepimeron. Calypter yellow, dorsal lobe darker, fringe and pile black. Plumula dark brown. Halter dark yellow, capitulum brown.

Wing: Basal ½ dark brown (dark on cells bc, c, basal ⅔ of sc, r, basal ⅓ of r1, base of r2+3, bm, most of cu p, base of cua1 and basal ⅔ of the anal lobe), entirely microtrichose; alula large, basally 3 times to apically 4.75 times as broad as c cell, dark, entirely microtrichose.

Legs: Proleg light brown, protibia to apical tarsomere dark brown to black. Mesoleg dark brown, mesotarsus black. Metaleg black, sometimes metacoxa, metatrochanter and basal ½ of metafemur light brown, metabasitarsomere swollen; pile on dorsal and ventral margin of metatibia slightly longer and thicker.

Abdomen: Dark brown; 4 times as long as thorax. First tergite pale on apical margin, black pilose with a few white pile baso-laterally. Second tergite rectangular, slightly inflated on apical ½, length 1.7 times minimum width, with subapical fascia of dull light brown pollen, and mainly with appressed black pile except white on baso-lateral ½. Third tergite rectangular and long, slightly narrowing towards apex, length 1.3 times minimum width, and with inconspicuous short pair of vittae medially; 3rd tergite with central triangular region of dull light brown pollen, except sub-shining on the pair of pale vittae, and with appressed black pile. Fourth tergite rectangular and long, length 2 times minimum width, dark brown with medial short pale vittae, and densely covered with minute white pile. Fifth tergite rectangular and long, length 1.4 times minimum width, dark brown; remaining characteristics as on 4th. Sixth segment conical short, 1.8 times shorter than 5th, dark brown. Genitalia: 7th tergite rectangular, wide and short; 7th segment lateral sclerite rectangular narrow, connected basodorsally to 7th tergite by sclerotized stripe, without baso-ventral extensions. Eighth tergite unsclerotized medially but with narrow sub-basal sclerotized bridge, basal crest weak; 8th sternite reduce to lateral pair of rectangular sclerites. Tenth tergite reduced to a narrow transverse strip, fused to cercus by apico-lateral extensions. Cercus with 1 row of pile on apical margin.

Length. 8.5 mm; wing 6.5 mm.

Distribution. Colombia (Boyaca), Peru (Junín), Suriname.

Material examined. COLOMBIA. Boyaca, Muzo, 900m, Holotype oviphora [red label], Holotype Baccha oviphora Hull CNC no.28522 [red label], 1936, J. Bequaert (1 ♀, holotype Baccha oviphora , CNC Diptera 188780). PERU. Junín, Chanchamayo, San Ramón, Sector Quebrada Santa Rosa, “Fundo Génova”, 11°05'44.4''S 75°21'19.6''W, 1080m., 07–09 Jul 2008. Col. X. Mengual (1 ♀, ZFMK). SURINAME. Para , Colakreek (nr. Zanderij), 5° 27'58''N- 55° 13'47''W, 23 Mar 2006, M. Reemer (1 ♀, RMNH).

Comments. The 4th abdominal segment is completely yellow on the type specimen, but this colouration seems to be caused by the high concentration of fat and/or eggs in that segment (that can be seen through the body wall). Colouration of abdominal tergites is sometimes hard to determine since it is easily affected by internal organ decomposition, which creates smear patterns on the internal wall.

Figures

FIGURE 12. A – C. Pelecinobaccha menguali sp. nov.: a – b. Female genitalia: a. Dorsal. b. Apex, lateral. c. Holotype, habitus, dorsal. d – g. Pelecinobaccha oviphora (Hull, 1943), female genitalia: d. Apex, lateral. e. 7 th tergite, dorsal. f. 7 th segment, lateral. g. Apex, dorsal. h. Holotype, habitus, dorsal. 7 tg: 7 th tergite, 8 tg: 8 th tergite, 10 tg: 10 th tergite, cerc: cercus, sp: spermatheca.