Pelecinobaccha capesorum

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 : 30-31

Pelecinobaccha capesorum Miranda sp. nov.

Map 8. Figure 21 (a–e).

Type locality. Peru, Cuzco, Paucartambo, Puente San Pedro, 50 km NW Pilcopata, 1600m, 12°41'S 72°16'W. Holotype female USNM.

Male. Male unknown.

Female. Head: Black. Face pale on lateral ⅓. Lunule pale above antennal insertion, central macula narrowly connecting to frons color. Frons with white-silver pollen continuous from face and restricted to lateral margin, dull gray pollinose medially. Vertex with black pile in 3 rows of pile, but most pile concentrated in median row; ocellar triangle ~2 times its length from posterior eye margin and ~1 ocellus-width from lateral eye margin. Eye with posterior indentation at level of antennal insertion. Antennal insertions separated. Occiput with dull dark pollen on dorsal ¼, otherwise occiput with white pollen; dorsal ¼ of occiput with 2 rows of simple black pile, anterior row very short; middle ½ with 2–3 rows scale-like white pile, anterior rows shorter, some pile black and simple dorsally; ventral ¼ with 2–3 irregular rows of scale-like white pile

Thorax: Scutum black, mostly black dull pollinose, except white on notopleuron and laterally slightly posterior to transverse suture, and with a pair of sub-median vittae and one median complete vittae of pale gray pollen; scutum with short white pile, longer on notopleuron, and with anterior row of longer shining white pile, interrupted in the middle by shorter pile. Scutellum dark brown, with metallic-shining pollen, with short white pile, subscutellar fringe pile long and white. Pleuron black with white pile. Plumula brown. Calypter yellow. Halter brown, capitulum orange.

Wing: Mostly hyaline with anterior margin dark brown (cells bc, c, sc, r, r1, r2+3 except for postero-apical ⅔, base of r4+5 and bm), entirely microtrichose; alula hyaline, narrow expanding slightly on apical ½, basally as broad as to apically 2 times as broad as c cell, entirely microtrichose.

Legs: Proleg brown, pale on profemur apex and basal 3/5 of protibia, probasitarsomere pale apically and on lateral surface, 2nd to 4th protarsomeres enlarged and dark brown, apical protarsomere light brown. Mesoleg brown, apex of mesofemur, basal ¾ and apex of mesotibia, and mesobasitarsomere pale, 2nd to 4th mesotarsomeres enlarged and dark brown, apical mesotarsomere light brown; ventral setae on mesobasitarsomere orange. Metaleg dark brown, apex of metafemur, base of metatibia, apical ½ of the metabasitarsomere and other metatarsomeres pale, except apical metatarsomere light brown; with some white pile dorsally on metacoxa.

Abdomen: Dark brown; ~3.5 times as long as thorax. First tergite white pilose, a few black pile baso-laterally. Second tergite long, length ~4 times minimum width, pale on baso-lateral ½, with pair of latero-median small triangular pale maculae; 2nd tergite with small central triangular region of dull black pollen, and mainly with short appressed black pile, except white on baso-lateral ½. Third tergite trapezoidal and long, length ~3 times minimum width, with pair of basal sub-lateral pale vittae extending ½ the length of the tergite and pair of median pale vittae extending ¾ of the length of the tergite, latter pair of vittae waned basally; 3rd tergite with 3 central vittae of dull black pollen, and mainly with appressed black pile, except white on baso-lateral ½. Fourth tergite sub-quadrate, slightly wider than long, with pair of basal sub-lateral small triangular pale maculae and pair of median pale vittae extending 4/5 of the length of the tergite; 4th tergite with pair of large triangular maculae of dull black pollen, pollen absent on baso-lateral corners, apex and on the pale vittae, and with appressed black pile, except for some white pile on baso-lateral corners. Fifth tergite rectangular and wide, with pair of central pale vittae almost reaching the apical margin and slightly lightened on basal sub-lateral maculae; 5th tergite dull black-pollinose except laterally and on pale vittae, and with appressed black pile. Sixth segment conical, as long as 5th. Genitalia: 7th tergite triangular, basal extensions slightly shorter than 6th segment, some pile occurring on apex; 7th segment lateral sclerite sub-triangular, greatly narrowing apically, acute baso-ventral extensions short. Eighth tergite entirely sclerotized, with basal and apical median notches, pair of apices long, basal crest normal; 8th sternite unsclerotized medially, short. Tenth tergite reduced to a pair of sclerites fused to the dorsal surface of the cerci, weakly sclerotized, not projecting beyond cercus marginal pile. Cercus with sub-basal ventral extension, and with 1 row of pile on apical margin; cerci narrowly fused dorsally.

Length. 12mm; wing 9.5mm.

Distribution. Peru (Cuzco).

Primary type. Holotype: Female in good condition, left proleg and genitalia dissected and placed in individual plastic tubes pinned with the specimen. Holotype labels: ‘ PERU. Cuzco: Pau- // cartambo, Puente // SanPedro (50 km NW // Pilcopata) 3Sep1988 // 1600m,A. Freidberg’ ‘USNM ENT 00257756’ ‘ Holotype // Pelecinobaccha // capesorum // Miranda’ [red label].

Comments. This species is similar to P. nubilorum but can be distinguished by the laterally pale face and genitalic characters.

Etymology. The specific epithet refers to the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), funding agency for the senior author’s PhD program. It is to be treated as a noun in the genitive case.

Figures

FIGURE 21. a – e. Pelecinobaccha capesorum sp. nov., holotype: a – d. Female genitalia: a. 7 th tergite, dorsal. b. Apex, dorsal. c. 7 th segment, lateral. d. Apex, lateral. e. Habitus, dorsal. f – j. Pelecinobaccha humillima sp. nov.: f – i. Male genitalia: f. Epandrium, lateral. g. Epandrium, ventral. h. Holotype, lateral. i. Holotype, ventral. j. Holotype, habitus, dorsal. 8 tg: 8 th tergite, 10 tg: 10 th tergite, cerc: cercus, s scl: subepandrial sclerite.