Pelecinobaccha waynei

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 : 83-84

Pelecinobaccha waynei Miranda sp. nov.

Map 7. Figure 15 (a–d).

Type locality. Peru, Madre de Dios, Pakitza, Rio Manu, 250m, 12°7'S 70°58'W. Holotype male USNM.

Male. Head: Black. Lunule with small pale area above antennal insertions. Frontal triangle black pilose, with pair of median oval spots of silvery-white pollen laterally. Vertical triangle with 3 rows of pile, but most pile concentrated in a single median row; ocellar triangle ~1.5 times its length from posterior eye margin. Eye contiguity slightly longer than vertical triangle length. Eye indentation at level of antenna insertion. Antennal insertions confluent, ventral margin with short dorsal extension. Dorsal ¼ of occiput with 1 row of simple black pile ventrally and 2 rows dorsally, anterior row shorter; middle ½ with 2–3 rows of scale-like white pile, posterior row much longer, sometimes with some black pile dorsally; ventral ¼ with 2 rows of scale-like white pile.

Thorax: Scutum black, brown-pollinose, pollen differently oriented on a pair of antero-posterior sub-median vittae; scutum mostly with black erect pile, except for anterior row of thin white pile widely interrupted in the middle. Scutellum black, with short black pile, sub-scutellar fringe short and black. Pleuron black and with sparse and white pile. Plumula short, white. Calypter white. Halter light yellow to light orange.

Wing: Infuscated, stigma darker, entirely microtrichose; alula infuscated, basally 1.75 times to apically 2.8 times as broad as c cell, entirely microtrichose.

Legs: Proleg dark brown, base and apex of profemur pale, base to basal 1/5 and apex of protibia pale. Mesoleg dark brown, base and apex of mesofemur and at most basal ⅓ of mesotibia pale. Metaleg dark brown, base and apex of metafemur and basal ¼ of metatibia pale; metacoxa pile white.

Abdomen: Black; ~4 times as long as thorax. First tergite mainly with long black pile, white baso-ventrally. Second tergite slightly constricted medially, length ~4 times minimum width, with a pair of pale fasciate spots submedially; 2nd tergite with rectangular black dull pollinose region medially that expands latero-subapically, and entirely black pilose, with pile erect laterally and appressed dorsally. Third tergite rectangular and long, length ~3 times minimum width, slightly widening apically, with one pair of sub-median lateral pale spots and one pair of sub-median pale short vittae; 3rd tergite with large central triangular region of dull black pollen, and with appressed black pile. Fourth tergite rectangular and long; remaining characteristics as on 3rd. Fifth tergite rectangular and wide, without maculae; remaining characteristics as on 4th. Genitalia: Cercus with 2 rows of pile on medial margin, 3 irregular rows of pile on lateral margin. Surstylus teardrop-shaped in lateral view, oriented ventrally, with strong setulae (around 25) mostly concentrated on ventro-anterior and apical margins, with thin sclerotized layer dorsally on apical ⅔, sparse pilose dorsally. Subepandrial sclerite rectangular with a pair of short posteriorly directed processes, lateral margin darker. Hypandrium with ventral notch extending to anterior ½, posterior margin with a second short notch. Distiphallus smooth and anterior surface slightly sinuous. Postgonite sparsely pilose, ventral and dorsal surfaces straight; postgonite apex convex anteriorly, convex on ventral extremity and acute on dorsal extremity.

Female: Female unknown.

Length. 8–8.5mm; wing 5.5–6mm.

Distribution. Peru (Madre de Dios), Venezuela (Zulia).

Primary type. Holotype: Male in good condition, with genitalia dissected and placed in plastic tube pinned with the specimen. Holotype labels: ‘ Peru.Madre de Dios: // Manu,Rio Manu, 250 m // Pakitza, 12°7'S, 70° // 58'W, 9–23 Sep 1988 // Wayne N. Mathis’ ‘Malaise // trap’ ‘USNM ENT 00257663’ ‘ Holotype // Pelecinobaccha // waynei // Miranda’ [red label].

Paratypes. PERU. Madre de Dios, Manu, Erika (near Salvacion), 550m, 5–6 Sep 1988, A. Freidberg (1 ♂, USNM ENT 00257666); ..., Manu Wildlife Center, Resaca near canopy tower, CNC DIPTERA #4142 [white label with blue border], 28 Oct 2006, J. H. Skevington (1 ♂, CNC Diptera 4142); ..., Rio Manu, Pakitza, 250m, 12°7'S 70°58'W, 9–23 Sep 1988, W. N. Mathis (1 ♂, USNM ENT 00257661). VENEZUELA. Zulia, El Tucuco (45 km SW of Machiques), 5–6 Jun 1976, A. S. Menke & D. Vincent (1 ♂, USNM ENT 00257714).

Etymology. The specific epithet is a patronym honouring Dr. Wayne N. Mathis, whom collected several of the specimens used in this study. It is to be treated as a noun in the genitive case.

Figures

FIGURE 15. a – d. Pelecinobaccha waynei sp. nov., holotype, male: a – c. Genitalia: a. Epandrium, dorsal. b. Hypandrium, lateral. c. Hypandrium, ventral. d. Habitus, dorsal. e – i. Pelecinobaccha alucard sp. nov.: e – h. Male genitalia: e. Epandrium, lateral. f. Epandrium, ventral. g. Hypandrium, lateral. h. Hypandrium, ventral. i. Holotype, habitus, dorsal. s scl: subepandrial sclerite.