Pelecinobaccha portachueloi

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 : 67-68

Pelecinobaccha portachueloi Miranda sp. nov.

Map 4. Figure 8 (a–e).

Type locality. Venezuela, Carabobo, Henri Pittier National Park, Portachuelo Pass, 1143m, 10°20'51''N 67°41'16''W. Holotype male CNC.

Male. Head: Black. Face mainly pale, dark brown restricted medially above tubercle. Lunule pale above antennal insertion, central macula broadly fused to frontal triangle color. Frontal triangle pale laterally except around eye contiguity, with silvery-white pollen restricted laterally, visible from an antero-ventral view, frontal prominence slightly protuberant, almost same level as frontal triangle. Vertical triangle with 1 row of pile; 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 positioned at level of antenna insertion. Antennal insertions confluent, ventral sclerotized margin extended dorsally, antennal black. Dorsal ⅓ of occiput with 2 rows of simple black pile, anterior row with shorter pile, reduced to 1 row ventrally; ventral ⅔ with 2–3 rows of white, scale-like pile, anterior row slightly shorter and with black pile dorsally until posterior eye indentation.

Thorax: Scutum black, dull brown-pollinose, with inconspicuous vittae of postero-anteriorly oriented pollen sub-medially; scutum mostly black pilose except white pilose anteriorly to scutellum and on anterior ½ of the notopleuron, with anterior irregular row of shining white pile; with longer pile anterior to transverse suture on notopleuron. Scutellum black, mainly black pilose with some pale pile basally, subscutellar fringe pile longe and white. Pleuron dark brown, pale on posterior ½ of posterior anepisternum and dorso-posterior portion of katepisternum; pleuron mostly white pilose, except anterior anepimeron mostly black pilose ventrally. Plumula short and white. Calypter light yellow. Halter white.

Wing: Entirely dark, lighter on posterior margin, entirely microtrichose; alula very reduced, apex at most ½ the width of the c cell.

Legs: Proleg light brown, pale on apex of profemur, base of protibia and 3rd protarsomeres. Mesoleg dark brown, pale on apex of mesofemur and basal ⅔ of mesotibia. Metaleg dark brown, pale on apex of metafemur, base of metatibia and apical 1/5 of metabasitarsomere and other metatarsomeres.

Abdomen: Black; 2.7 times as long as thorax. First tergite black; black pilose except white baso-ventrally. Second tergite long, length 5.4 times minimum width, with pair of sub-lateral pale maculae; with subapical central long triangular region dull black-pollinose; pile black, long and erect laterally, but short and appressed dorsally. Third tergite trapezoidal and long, length 4.6 times minimum width, with short pale vittate maculae on baso-lateral corners and central pair of pale vittate maculae; 3rd tergite with large central triangular region of dull black pollen, and short, appressed and black pile. Third sternite narrow and long. Fourth tergite rectangular and long, 1.4 times as long as wide, with pale baso-lateral corners and a central pair of pale vittate maculae that fade basally and reappear on the base; remaining characteristics as on 3rd. Fifth tergite rectangular and wide, with pair of short central pale vittae on basal ½; remaining characteristics as on 3rd. Genitalia: Cercus with 1 regular row of pile on medial margin and 2 regular rows on lateral margin. Surstylus directed ventrally, rectangular with rounded apex, with strong setulae on ventral surface, 6 short ones basally, 1 medially and 23 on apical ⅓ until apical margin, sparse pilose on basal ⅔ of the dorsal surface, pile shorter posteriorly. Subepandrial sclerite crescent-shaped with a pair of short apical extensions. Hypandrium with ventral notch extending to anterior ⅔ with a rectangular posterior margin. Distiphallus smooth and anterior surface straight. Phallapodeme normal, tapering on basal ⅓. Postgonite with ventral and dorsal surfaces straight; apex convex anteriorly, with acute dorsal extremity and slightly convex ventral extremity; postgonite curving laterally on apical ⅔.

Female: Female unknown.

Length. 10.5mm; wing 7.5mm.

Distribution. Venezuela (Carabobo).

Primary type. Holotype: Male in good condition (except wings bent downward at mid point), doublemounted. Specimen originally in 100% EtOH with DNA extracted (by immersion in heated solution for 24h) prior to mounting. Genitalia dissected and placed in a plastic tube pinned with specimen. Left proleg dissected and kept in 100% EtOH at the CNC under accession number JSS25140. Holotype labels: ‘VEN: Carabobo, Henri Pitier // Natl. Park, Portachuelo // pass, 10°20'51''N // 67°41'16''W, 1143m., // 13.IX.2008, col. Jeff // Skevington’ ‘J. Skevington Specimen # 25140’ ‘ Holotype // Pelecinobaccha // portachueloi // Miranda’ [red label].

Etymology. The specific epithet is a reference to the pass where the specimen was collected. It is to be treated as a noun in apposition.

Figures

FIGURE 8. a – e. Pelecinobaccha portachueloi sp. nov., holotype: a – d. Male genitalia: a. Epandrium, lateral. b. Epandrium, ventral. c. Hypandrium, lateral. d. Hypandrium, ventral. e. Habitus, dorsal. f – j. Pelecinobaccha duopuncta sp. nov., holotype: f – i. Male genitalia: f. Epandrium, lateral. g. Surstylus, oblique ventral. h. Hypandrium, lateral. i. Hypandrium, ventral. j. Habitus, dorsal. s scl: subepandrial sclerite.