Pelecinobaccha ovipositoria (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 : 61-63

Pelecinobaccha ovipositoria (Hull, 1943) comb. nov.

Map 6. Figure 13 .

Baccha ovipositoria Hull, 1943 — Hull, 1943a: 76. Type locality: Colombia. Holotype female CNC. Hull, 1949a: 230 (fig. 178, abdomen).

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

Baccha amabilis Hull, 1943 — Hull, 1943b: 39. Type locality: Peru. Holotype male USNM. Hull, 1949a: 192 (fig. 4, abdomen), 276 (fig. 367, wing) n. syn.

Ocyptamus amabilis . Thompson et al., 1976: 14 (catalog citation).

Baccha cordelia Hull, 1949 — Hull, 1949a: 186. Type locality: Peru. Holotype female CNC. n. syn.

Ocyptamus cordelia . Thompson et al., 1976: 15 (catalog citation).

Female. Head: Shining black. Face with sparse white pollen, concentrated laterally, pollen oriented dorsoventrally except for small patch oriented differently ventral to frontal prominence, entirely white pilose; tubercle large and without pollen. Lunule mainly pale, central black macula sometimes diffuse and weakly connected to frons color. Frons white dull pollinose, with median oval macula of dark pollen, pollen absent on dorsal ⅓ and ventro-lateral ⅓, with shining white pollen in small latero-medial spots, mainly white pilose with some black pile intermixed. Frontal prominence bare and with no pollen. Vertex protuberant, without pollen, with a single median row of black pile ending dorsal to posterior ocelli; ocellar triangle ~3 times its length from posterior eye margin, and ~3 occelli-width from lateral eye margin. Antenna dark orange, scape with thicker pile, basoflagellomere oval long, with ventral ½ pale. Antennal insertions confluent, ventral margin sometimes with narrow dorsal sclerotized extension that separates insertions. Occiput homogeneously covered with white pollen; dorsal ¼ of occiput with posterior row of long scale-like white pile, or long simple black pile or the 2 types intermixed, 1–2 anterior rows with shorter, simple black 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 its dorsal pile sometimes black.

Thorax: Black. Scutum dull brown-pollinose with a pair of sub-median vittae of dull blue pollen, sometimes with a median white pollinose vita; scutum mainly black pilose, except notopleuron white pilose, but area anterior to transverse suture sometimes with black pile; scutum anterior row of shining white pile not so distinct and largely interrupted in the middle. Scutellum pale, black pilose, subscutellar fringe pile normal and black to long and white. Pleuron entirely black or pale medially (on posterior ½ of posterior anepisternum, anterior anepimeron, dorsoposterior of katepisternum, katepimeron and meron); pleuron mostly white pilose, except ventro-posterior katepisternum sometimes with a few black pile. Calypter yellow, dorsal lobe fringe darker. Plumula normal to long and yellow. Halter brown, capitulum yellow to light orange.

Wing: Basal ½ dark brown (dark on cells bc, c, basal ⅔ of sc, r, basal ⅓ of r1, basal 1/6 of r2+3, base of r4+5, bm, basal 1/7 of dm, most of cu p, basal ¼ of cua1 and the anal lobe), entirely microtrichose; alula large, basally 1.4 times to apically 4 times larger than c cell, dark, entirely microtrichose.

Legs: Proleg pale, probasitarsomere brown to black, other protarsomeres black; protarsomeres narrow from 2nd to 5th. Mesoleg pale, mesobasitarsomeres sometimes light brown, 2nd to 5th mesotarsomeres black. Metaleg black, metacoxa, metatrochanters and basal 3/5 of metafemur pale, metabasitarsomere swollen.

Abdomen: Light brown to orange, apex sometimes black; ~5 times as long as thorax. First tergite black pilose on dorsal ½, otherwise pile white. Second tergite rectangular, slightly inflated on apical ½, length 2 times minimum width, sometimes with pair of central vittate pale maculae on apical ½; second tergite mainly with appressed black pile, except white on baso-lateral ½. Third tergite rectangular and long, slightly narrowing until apex, length 1.3 times minimum width, and with appressed black pile; 3rd tergite with sub-median pair of long pale vittae, each vittae connected sub-basally to pair of sub-lateral pale vittae that are sometimes absent. Fourth tergite rectangular and long, length 1.5 times minimum width, and with sub-median pair of pale vittae, sometimes with a sub-lateral pair of pale vittae; 4th tergite densely covered with minute white pile. Fifth tergite rectangular and long, length 1.4 times minimum width, brown to black, sometimes with pair of small pale maculae basally; remaining characteristics as on 4th. Sixth segment conical short, 1.8 times shorter than 5th, brown to black. Genitalia: 7th tergite sub-triangular short, with blunt and jagged apex, weakly sclerotized but with strong sclerotized apical margin; 7th segment lateral sclerite rectangular narrow, connected basodorsally to 7th tergite by sclerotized strip, 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 an apico-lateral extension. Cercus with 1 row of pile on apical margin.

Male: Like female except: Face pile black laterally ventral to antennal insertions. Lunule central macula sometimes reduced to a small black spot. Frontal triangle with black dull pollen dorsally; entirely black pilose. Vertical triangle not so distinctly protuberant; ocellar triangle ~2 times its length from posterior eye margin. Eye contiguity slightly shorter than vertical triangle length. Sub-scutellar fringe pile normal, black laterally and white medially. Dorsal lobe of calypter darker, margin black. Wing dark markings not so distinct but more extensive (dark on cell sc, basal ⅔ of r1, basal ⅓ of r2+3, basal ¼ of r4+5, basal ¼ of dm and basal ⅓ of cua1). Abdomen 2.9 times as long as thorax. First tergite sometimes mainly black pilose, with a few white pile ventrally and on dorsal margin. Second tergite long, length 1.8 times minimum width, with central pair of weak pale spots, and with white pile on baso-lateral ⅔. Third tergite sub-quadrate, lateral vittae ½ the length of the median vittae. Fourth tergite as male’s 3rd. Fifth tergite rectangular and wide, 1.6 times wider than long, dark brown, with pair of central pale vittae connected basally to sub-lateral shorter pair; with short appressed black pile. Genitalia black, distinct from preabdomen. Genitalia: Cercus with 2 rows of pile on medial margin, 3 irregular rows of pile on lateral margin. Surstylus short and sub-oval in lateral view, but narrows apically, with strong setulae ventrally (around 25) concentrated on apical margin and sparse on anterior ⅓, pilose on apico-dorsal ½. Subepandrial sclerite rectangular and wide, slightly concave on posterior margin and slightly convex on anterior margin. Hypandrium short and rectangular, with ventral notch extending to apical 3/5. Phallapodeme well sclerotized medially on basal ½, well sclerotized dorsally on apical ½. Basiphallus pilose laterally, with short posterior extremity; Distiphallus with anterior surface straight. Postgonite short, with dorsal and ventral surface almost straight; postgonite apex slightly convex, with acute dorsal extremity and rounded ventral extremity.

Length. 9–9.5mm; wing 6–7mm.

Distribution. Bolivia (La Paz), Brazil (Amazonas, Roraima), Ecuador (Napo), Peru (Cuzco, Loreto, Ucayali), Suriname.

Material examined. BOLIVIA. La Paz, Alto Rio Beni, south of Rio Inicua, 1100m., 15–18 Jan 1976, L. E. Peña (1 ♀, USNM). BRAZIL. Amazonas, Carauari, 05°05'27''S 67°10'57''W, Jul 2005, F. Xavier–Filho (1 ♀, INPA-DT0000261); Roraima, Tepequém, Pousada SESC, 03°45.186'N 61°42.959'W, 637m, 14 Jul 2009, M.L. Oliveira, O. Mielke & M. Casagrande (1 ♀, INPA-DT0000262). COLOMBIA. Meta, Restrepo, 1936, J. Bequaert (1 ♀, holotype Baccha ovipositoria , CNC Diptera 188781). ECUADOR. Napo, Jatun Sacha Biol. Res., 6 km E Misahualli, 1°4'S 70°36'W, ~ 450m., 29 Apr–8 May 2002, T. Eles (1 ♀, DEBU). PERU. Cuzco, Quincemil, 780m., 13–31 Aug 1962, L. Pena (1 ♀, USNM); Loreto, Iquitos, Type nº 56422 U.S. N.M. [red label], Mar–Apr 1931, R.C.Shannon (1 ♂, holotype Baccha amabilis , USNM); …, Tahuato-river, Varzea, 04° 23.716S- 73° 15.677W, 1–15 Aug 2009 & 0 1 Feb 2010, T.J.A. Faasen (1 ♂ & 3 ♀, USNM); [Ucayali], Pucallpa , Frank M. Hull Collection C.N.C. 1973, 8 Dec 1947, J. Schunke (2 ♂, CNC Diptera 161282 & 203479); ..., cordelia [red typewriter letters on yellow paper], Holotype Baccha cordelia Hull 12 Dec 1947 [red label], J. Schunke (1 ♀, holotype Baccha cordelia , CNC Diptera 174347). SURINAME. Para , SE of Zanderij, road to Kraka, 5° 25'18''N- 55° 11'23''W, 16 Mar 2006, M. Reemer (1♂, RMNH)..

Comments. The description was based on female specimens, which were in better condition than the males. Reemer (2010) already alluded to the fact that B. amabilis and B. cordelia could be synonyms, but he didn’t consider B. ovipositoria . Hull may have overlooked the similarities between B. amabilis and B. ovipositoria because they were male and female, respectively, and differ slightly due to sexual dimorphism. The differences used by Hull (1949a) to distinguish B. cordelia from B. ovipositoria (“[ B. cordelia ] related to ovipositoria Hull , but without the medial vitta on the 2nd segment and with quite different proportions to the abdominal segments”) were not convincing since the medial vitta of dull pollinosity is variable among the specimens studied and the dimensions of the abdominal segments are affected by the state of preservation.

As in P. oviphora , the overall coloration of the abdomen is hard to determine.

Figures

FIGURE 13. Pelecinobaccha ovipositoria (Hull, 1943). a – d. Female genitalia: a. Dorsal. b. 7 th segment, lateral. c. Apex, lateral. d – g. Male genitalia: d. Epandrium, lateral. e. Epandrium, ventral. f. Hypandrium, lateral. g. Hypandrium, ventral. h. Female, Habitus, dorsal. 7 tg: 7 th tergite, 8 tg: 8 th tergite, 10 tg: 10 th tergite, cerc: cercus, s scl: subepandrial sclerite.