Pelecinobaccha hiantha (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: 44-46

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Pelecinobaccha hiantha (Hull, 1943)

comb. nov.

Pelecinobaccha hiantha (Hull, 1943)  comb. nov.

Map 9. Figure 29View FIGURE 29.

Baccha hiantha Hull, 1943  — Hull, 1943 a: 74. Type locality: Brazil, Santa Catarina, Nova Teutônia. Holotype female AMNHAbout AMNH. Hull, 1949 a: 154 (redescription), 212 (fig. 96, female abdomen), 272 (fig. 356, female wing).

Ocyptamus hiantha  . Thompson et al., 1976: 19 (catalog citation).

Female allotype of Baccha zerene Hull, 1949  — Hull, 1949 b: 245. Type locality: Peru, Chanchamayo. Allotype female CNCAbout CNC. n. syn.

Baccha zoe Hull. Nomen  nudum (collection name).

Male. As in P. manuelorum  except: Head: Face pale on lateral ¼, mainly white pilose except black ventral to antennal insertions. Lunule usually distinctly pale, central black macula connected by dark vitta to frontal triangle color. Vertical triangle with black pile concentrated on a medial row; ocellar triangle ~ 1.5 times its length from posterior eye margin. Antennal insertions confluent, ventral margin with dorsal extension. Dorsal ¼ of occiput with 2 rows of simple black pilosity, pile of anterior row very short; middle ½ with 3 rows of scale-like white pile, anterior rows shorter and with simple black pile dorsally; ventral ¼ with 2–3 regular rows of scale-like white pile. Thorax: Scutum mostly brown dull pollinose, pollen more concentrated on notopleuron, with inconspicuous submedian short pair of vittae of concentrated pale pollen; scutum with erect black pile, longer on notopleuron anterior to transverse suture and anterior to scutellum, and with anterior row of shining white pile interrupted medially. Anterior anepimeron usually white pilose, dorso-posterior of posterior anepisternum has only a few black pile dorsally, rarely with posterior anepisternum, anterior anepimeron and katepisternum black pilose. Plumula normal. Halter capitulum yellow. Wing: Mostly dark with posterior margin diffuse light brown (dark on cells bc, c, sc, r, r 1, r 2 + 3 and bm, other cells diffusely light brown); alula diffusely light brown with anterior margin darker. Legs: Proleg dark brown, only apex of profemur and base of protibia pale. Mesoleg dark brown, basal ¼ of mesotibia light brown. Metaleg dark brown, pale on apical ¼ of the metabasitarsomere and other metatarsomeres, apical tarsomere sometimes light brown. Abdomen: ~ 4 times as long as thorax. Second tergite usually pale on baso-lateral ½, length ~ 3 times minimum width, and with white pile baso-laterally; 2 nd sternite with sparse short black pile or bare. Third tergite pale baso-laterally. Fourth tergite rectangular and long. Genitalia: Cercus with 1 regular rows of pile on medial margin, and 2 regular rows of pile on lateral margin, densely microtrichose. Surstylus directed ventrally, ventral surface with around 12 setulae on apex and around 5 setulae sparsely distributed medially until the base, dorso-apical ¾ pilose. Subepandrial sclerite trapezoidal, slightly convex on posterior margin. Hypandrium with ventral notch straight and extending to anterior ½. Phallapodeme very weakly sclerotized on basal ⅓. Basiphallus with posterior extension long; distiphallus apical margin strongly curved anteriorly. Postgonite with dense long pile ventrally except on ventro-apical 1 / 5, ventral surface straight, dorsal surface ascending dorsally on apical ⅔, apex concave, ventral and dorsal apices acute.

Female: Like male except: Face distinctly pale on lateral ⅓. Ocellar triangle 2.5–3 times its length from posterior eye margin and ~ 1 ocellus-width from lateral eye margin. Ventral margin dorsal extension between the antennal insertions sometimes distinctly sclerotized half way to dorsal margin. Sometimes posterior anepisternum entirely white pilose. Wing with dark regions well delimited and remainder of wing hyaline (dark on cells bc, c, sc, r, r 1, r 2 + 3 except for a medial region on posterior margin, basal ⅓ of r 4 + 5, bm, basal ⅔ of dm, most of cua 1 and cu p; anal lobe light brown). Legs entirely dark brown but sometimes profemur and protibia mostly light brown. Second to 4 th protarsomeres and 3 rd and 4 th mesotarsomeres slightly swollen. Mesofemur and basal ¾ of mesotibia light brown and basal ½ of metafemur light brown. Metabasitarsomere pale on apical ⅓ or ¼; metacoxa sometimes mainly black pilose. Second abdominal tergite shorter, length 2.5–3 times minimum width, and with triangular region of dull black pollen. Third abdominal tergite shorter, length ~ 1.6 times minimum width, with baso-lateral pale triangles. Fourth and 5 th abdominal tergites rectangular and wide, remaining characteristics as on 3 rd. Sixth segment conical, 1.3 times as long as 5 th tergite. Genitalia: 7 th tergite rectangular, wide and short, apex convex and slightly extended, basal extensions slightly shorter than 6 th segment; 7 th segment lateral sclerite right triangle shaped. Eighth tergite unsclerotized medially appearing as reduced to a pair of narrow separate sclerites, basal crest short. Tenth tergite reduced to a pair of sclerites, fused to the dorsal surface of the cerci. Cercus with 1 row of marginal pile.

Length. 11–13mm; wing 9–10mm.

Distribution. Brazil (Goiás, Santa Catarina), Colombia (Boyaca), Costa Rica (Guanacaste, Puntarenas), Peru (Junín).

Material examined. BRAZIL. Goias, Campinas, 8 Jan 1934, T. Borbmeier (1 ♂, CNCAbout CNC Diptera  160776); Paraná, Rondon, 24 ° 38 'S 54 °07'W, Mar 1956, F. Plaumann (1 ♂, CNCAbout CNC Diptera  161225); Santa Catarina, Nova Teutônia, 27 ° 11 'S 52 ° 23 'W, Holotype hiantha  [red label], 10 Nov 1936, F. Plaumann (1 ♀, Holotype Baccha hiantha  , AMNHAbout AMNH). COLOMBIA. Boyaca, Muzo, 900m, Frank M. Hull Collection C.N.C. 1973, 1936, J. Bequaert (1 ♀, CNCAbout CNC Diptera  160778). COSTA RICA. Guanacaste, Nandayure, Cerro Azul, 1050m, libre, L N 214769 39700, #77663, 13– 16 Apr 2004, W. Porras (1 ♂, INB0003860405 INBIOCRI COSTA RICA); ..., Santa Rosa Nat. Park, on Piper marginatum  , # 79 -11358, 8 Aug 1979, A. Perry (1 ♀, USNMAbout USNM ENTAbout ENT 00257650); Puntarenas, Camino a las Tablas, horilla de un charral, 1200m, L_S_ 318300 _ 594400, #50799, 28 Jun 1998, E. Navarro (1 ♂, INB0003045917 INBIOCRI COSTA RICA); ..., Fca. Cafrosa, Tajo, 1 km O del Tajo, 1500m, L_S_ 319350 _ 596470, #47403, 11 Jul 1997, A. Picado (1 ♀, INBIO CRIAbout CRI 002 567582); ..., Send. al Higueron Central, 2.5 km NE del Progresso, 1450m, L_S_ 318900 _ 597300, #48066, 3 Oct 1997, A. Picado (1 ♂, INBIO CRIAbout CRI 002 576075); ..., Send. a las Juntas, 2.5 km N. de Progresso, 1500m., L_S_ 320800 _ 594500, # 48875, 0 5 Nov 1997, E. Navarro (1 ♂, INBIO CRIAbout CRI 002 409156). PERU. Junín, Chanchamayo, 1100m, Allotype Baccha zerene Hull  [red label], 17 Jul ?? 48, J. Schunke (1 ♀, allotype Baccha zerene  , CNCAbout CNC Diptera  203490); …, Holotype Baccha zoe Hull  [red label], 16 Aug [19] 48, J. Schunke (1 ♂, CNCAbout CNC Diptera  189152).

Comments. The dark regions on the wing are sometimes reduced on teneral specimens.

A single specimen from Chanchamayo ( Peru, Junín) collected by J. Schunke, from Hull’s personal collection and now in the CNCAbout CNC, has a red label written with “ Holotype Baccha zoe Hull  ”, apparently a manuscript name.

Very close to P. manuelorum  from which it can be distinguished by the anterior row of pile on the dorsal occiput, the pilosity on the 2 nd abdominal sternite and genitalic characters.


American Museum of Natural History


Canadian National Collection of Insects, Arachnids, and Nematodes


Smithsonian Institution, National Museum of Natural History


Ministry of Natural Resources


Universidade do Extremo Sul Catarinense, Bairro Universitário














Pelecinobaccha hiantha (Hull, 1943)

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

Ocyptamus hiantha

Thompson 1976: 19