Pelecinobaccha telescopica ( Curran, 1930 )

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: 73-75

publication ID

publication LSID

persistent identifier

treatment provided by


scientific name

Pelecinobaccha telescopica ( Curran, 1930 )

comb. nov.

Pelecinobaccha telescopica ( Curran, 1930)  comb. nov.

Map 10. Figure 39View FIGURE 39.

Baccha telescopica Curran, 1930  — Curran, 1930: 74. Type locality: Colombia. Holotype female AMNHAbout AMNH. Hull, 1943 a: 44 (fig. 1, alula); Hull, 1949 a: 205 (fig. 60, abdomen), 207 (fig. 71, abdomen), 276 (fig. 369, wing)

Ocyptamus telescopicus  . Thompson et al., 1976: 28 (catalog citation).

Baccha salpa Hull, 1944  .— Hull, 1944 c: 40. Type locality: Peru. Holotype male CUICAbout CUIC. Hull, 1949 a: 169 (redescription), 224 (fig. 154, male abdomen). n. syn.

Ocyptamus salpa  . Thompson et al., 1976: 26 (catalog citation).

Baccha arethusa Hull, 1949  . Hull, 1949 a: 181. Type locality: Peru, Ucayali, Pucallpa  . Holotype female unknown. n. syn.

Ocyptamus arethusa  . Thompson et al., 1976: 13 (catalog citation).

Baccha stipa Hull, 1949  . Hull, 1949 a: 110. Type locality: Colombia. Holotype female CNCAbout CNC. Hull, 1949 a: 207 (fig. 71, female abdomen). n. syn.

Ocyptamus stipa  . Thompson et al., 1976: 28 (catalog citation).

Male. Head: Shining black. Face with pale lateral 1 / 5 to 1 / 6, usually restricted to ventro-lateral ½. Lunule inconspicuously pale above antennal insertion. Frontal triangle black pilose, pair of oval spots of silvery-white pollen centro-laterally visible from dorsal view, connected to pollen from face by narrow differently oriented pollen. Vertical triangle with some dull pollen, with most black pile forming a central single row ending dorsal to anterior ocellus; ocellar triangle separated by its length from posterior eye margin. Eye contiguity slightly longer than vertical triangle length. Eye with sub-triangular indentation on posterior margin dorsal to or at level of antenna insertion. Antennal insertions confluent, antennal dark red, pedicel shorter dorsally, basoflagellomere oval short (~ 1.2 times as long as wide), sometimes slightly lightened baso-ventrally on the medial surface, black pilose, arista reddish black. Occiput with dull dark pollen on dorsal ⅓ and white pollen on ventral ⅔; dorsal ⅓ of occiput with 2 regular rows of simple black pile, anterior row shorter, middle with 1–2 regular anterior rows of simple long black or white pile and 1 regular posterior row of very long scale-like white pile, ventral ⅓ with 2 irregular rows of scalelike white pile.

Thorax: Prothorax black, dull pollinose. Scutum black, mostly with dull brown pollen, except white on notopleuron, and no distinct pollinose maculae; scutum with erect black pile, longer and sometimes also white laterally, anterior to transverse suture, and with anterior row of shining white pile interrupted in the middle. Scutellum black, with sparse dull brown pollen, black pilose, pile longer than on scutum, subscutellar fringe with normal black pile. Pleuron shining black, covered with white pollen, and with longer white microtrichia on anterior ½ of katatergite; pleuron white pilose, except black pile might occur on anterior anepisternum and dorsally on anterior anepimeron. Plumula normal, golden. Calypter yellow, pile sometimes darker. Halter yellow, capitulum sometimes darker basally.

Wing: Mostly dark except for apical 1 / 5 (dark on basal 5 / 6 of r 1, basal ⅔ of r 2 + 3 and basal 4 / 5 of dm), posterior margin sometimes also hyaline, entirely microtrichose; alula brown, basally 2 times to apically 4 times as broad as c cell, entirely microtrichose.

Legs: Proleg dark brown. Mesoleg dark brown, apex of profemur pale. Metaleg dark brown, apex to apical ¼ of metabasitarsomere to the 4 th metatarsomere white, pile white dorso-laterally on metacoxa and on white regions.

Abdomen: ~ 3.5 times as long as scutum, dark brown. First tergite black pilose dorsally and white ventrally, with a row of white pile dorso-medially and bare medially. Second tergite long and slightly constricted medially, ~ 3.5 times minimum width, with subapical dull black-pollinose triangular region; 2 nd tergite basal ½ with white erect pile laterally and dorsally, apical ½ with erect and black pile, except appressed dorsally. Third tergite trapezoidal and long, ~ 2.5 times as long as basal width, with large central triangle of dull black pollen, and with appressed black pile. Fourth tergite rectangular and long, remaining characteristics as on 3 rd. Fifth tergite rectangular and wide, remaining characteristics as on 3 rd. Genitalia: Epandrium not notched posteriorly. Cercus with 1 row of pile on medial margin and 2 rows on lateral margin. Surstylus long, rectangular with sub-triangular apex, directed apically, mostly with long pile on basal ½, ventrally and dorsally, with 3 rows of setulae ventroapically, very slightly concave on ventral side, without dorsal thin layer of sclerotization. Subepandrial sclerite long, slightly concave ventrally, mostly rectangular, basal margin concave and articulated with base of dorsal arc of hypandrium, apical margin with 3 small extensions. Hypandrium narrow and long, dorsal arc with long surface, base and apex very distanced from each other, with ventral notch extending to anterior ¾. Basiphallus with posterior extremity wide, distiphallus with anterior surface smooth and slightly concave, membranous region with thick microtrichia; ejaculatory apodeme long, apex convex. Phallapodeme long, mostly weakly sclerotized but strongly sclerotized at base and on a narrow central region extending towards the apex. Postgonite narrow and long, with ventral pile on basal ⅔, ventral surface gently curving dorsally at apical ⅓ until the dorsal acute extremity, dorsal surface slightly concave.

Female: Like male except: Frons with dull pollen dorso-laterally and with white pollen on maculae, vertex shiny, pile restricted to a single row, ocellar triangle ~ 2.5 times its length from posterior eye margin and ~ 1 ocelluswidth from lateral eye margin, anterior row on dorsal ⅓ of occiput sometimes very short, basoflagellomere oval long (~ 1.5 times as long as wide), notopleuron sometimes with a few white pile anterior to transverse suture, wing with basal ⅔ dark (dark on basal ¾ of r 1, basal ½ r 2 + 3, basal 1 / 5 of r 4 + 5, basal ½ of dm), profemur paler than male, mesofemur and basal ½ of metafemur sometimes paler, abdomen slightly widening at apex of 2 nd tergite and slightly narrowing at apex of 4 th tergite, all pile black, short and appressed. Second abdominal tergite shorter than male, rectangular and long, 2.3 times as long as wide; 2 nd tergite as long as 3 rd; 4 th tergite as long as 5 th; 2 nd and 3 rd tergites longer than 4 th and 5 th; 3 rd and 4 th tergites rectangular and long. Fifth tergite slightly conical and longer than basal width, with tergite and sternite fused at apex, 1.7 times as long as wide. Sixth segment very long, 5.8 times as long as wide. Genitalia: strongly sclerotized, 7 th tergite short, with a pair of lateral, weakly sclerotized, very long (as long as the 6 th segment), thin, basal extensions into the 6 th segment, 7 th segment lateral sclerite triangular wide, dorsally extended anteriorly to the 7 th tergite, with very long pair of baso-ventral extensions, very weakly sclerotized and flexible, 7 th segment with central longitudinal area bare dorsally and ventrally, extensive intersegmental membranous region between 7 th and 8 th segments, 8 th tergite with basal crest undulate on inner margin, apex rounded, 8 th sternite rectangular and wide.

Length. 12–12.5mm; wing 7.5–8.5mm.

Distribution. Bolivia (La Paz), Colombia (Boyaca), Peru (Amazonas, Junín, Madre de Dios).

Material examined. BOLIVIA. La Paz, Heath River Wildlife Center, ~ 21 km SSW Puerto Heath, 12 ° 40 'S 68 ° 42 'W, 29 Apr– 12 May 2007, J. H. Kits (1 ♀, DEBUAbout DEBU 00282419). COLOMBIA. Boyaca, Muzo, 900m, Frank M. Hull Collection C.N.C. 1973, 1936, J. Bequaert (1 ♀, holotype Baccha stipa  , CNCAbout CNC Diptera  160829). PERU. Amazonas, Montenegro, Bagua, 350m, 29 Sep– 2 Oct 1963, Wygodzinsky (1 ♀, AMNHAbout AMNH); [Junín], El Campamiento, Col. Perene, Holotype Cornell U. no 2200 [red label], Holotype salpa Hull  [red label], 19 Jun 1920, Cornell Univ. Exp. (1 ♂, holotype Baccha salpa  , CUICAbout CUIC); Madre de Dios, Manu, Rio Manu, nr. Pakitza, 250m, 12 ° 7 'S 70 ° 57 'W, 9 Sep 1988, W. N. Mathis (2 ♂, USNMAbout USNM ENTAbout ENT 0 0 257694 & ... 711); ..., Pakitza, 250m, Malaise trap, 12 ° 7 'S 70 ° 58 'W, 9–23 Sep 1988, W. N. Mathis & A. Freidberg (1 ♂, USNMAbout USNM ENTAbout ENT 0 0 257702, 1 ♀, USNMAbout USNM ENTAbout ENT 00257690); ..., Rio Tambopata Reserve, 30 km SW Puerto Maldonado, 290m, 12 ° 12 'S 69 ° 16 'W, tropical- MoistFor., 19 Sep– 10 Oct 1984, D. A. Grimaldi (1 ♂ & 2 ♀, AMNHAbout AMNH).

Comments. We are unable to locate the holotype of B. arethusa  , but Hull’s (1949 a) description, the observations regarding a dark brown calypter and a long 6 th abdominal segment, and the fact that Hull didn’t even add this species to his key, leave little doubt that it is a junior synonym of B. telescopica  .

In Hull’s (1949 a) key B. stipa  ( Fig. 39View FIGURE 39 h) keys out as a separate species from B. telescopica  , leading one to believe that Hull intended on keeping B. stipa  as a separate species and not a variation from B. telescopica  (as his drawings point out on fig. 71 of the same work). In couplet 78 of Hull’s (1949 a) key it is noted that ‘ stipa’ is present in Colombia. Among miscellaneous material from the Frank M. Hull collection at the CNCAbout CNC, there was a specimen from Colombia marked as ‘ Baccha telescopica  var.’ in Hull’s handwriting ( CNCAbout CNC Diptera  # 160829). There is little doubt that this specimen was the intended type for Hull’s species. The specimen was fixed as the holotype by monotypy ( ICZN 73.1.2.), and labeled accordingly, to guarantee an universal interpretation of the name. The specimen agrees with the above redescription, therefore B. stipa  is hereby considered a junior synonym of B. telescopica  .


American Museum of Natural History


Cornell University Insect Collection


Canadian National Collection of Insects, Arachnids, and Nematodes


Ontario Insect Collection, University of Guelph


Smithsonian Institution, National Museum of Natural History


Ministry of Natural Resources














Pelecinobaccha telescopica ( Curran, 1930 )

Miranda, Gil Felipe Gonçalves, Marshall, Stephen A. & Skevington, Jeffrey H. 2014


Ocyptamus telescopicus

Thompson 1976: 28


Ocyptamus salpa

Thompson 1976: 26


Ocyptamus arethusa

Thompson 1976: 13


Ocyptamus stipa

Thompson 1976: 28


Baccha arethusa

Hull 1949: 181


Baccha stipa

Hull 1949: 110Hull 1949: 207


Baccha salpa

Hull 1949: 169
Hull 1944: 40


Baccha telescopica

Hull 1949: 205
Hull 1943: 44
Curran 1930: 74