Pityocera (Pseudelaphella) gorayebi

Krolow, Tiago Kütter, Henriques, Augusto Loureiro, Gorayeb, Inocêncio De Sousa, Limeira-De-Oliveira, Francisco & Buestán, Jaime, 2015, Taxonomic revision of the Neotropical genus Pityocera Giglio-Tos, 1896 (Diptera: Tabanidae: Scionini), Zootaxa 3904 (3), pp. 301-333 : 320

Pityocera (Pseudelaphella) gorayebi Limeira-de-Oliveira & Krolow sp. nov.

(figures 11A–F)

Type locality. Brazil, Bahia, Santa Rita.

Diagnosis. small to medium sized (8.6–11.1 mm); frons parallel sides; face, gena and parafacial pruinose, only clypeus smooth and shiny; beard white; antennal flagellum orange; first flagellomere higher than long.

Description, Holotype ♀: body length 11.1 mm (fig. 11A); wing length 10.7 mm; wing width 3.4 mm.

Head (fig. 11B): eyes without color pattern when dry, densely pilose. Occiput with yellow hair. Frons parallel, D.I. 1.0, F.I. 2.9; with yellowish brown pruinosity and brown pilosity. Subcallus glabrous, with pruinosity identical to frons. Parafacial and face with pruinosity as on the frons, sparse light-brown hair. Gena with yellowish brown pruinosity and white beard. Clypeus smooth and shiny. Antenna (fig. 11C), scape and pedicel with yellowish brown pruinosity and black hairs; flagellum orange, without pruinosity; first flagellomere taller than long, with tuft of dorsal hairs; flagellomeres 1–3 fused, 4–7 free; apical flagellomere with black hairs. Palpus with first segment tubular and smaller than half the length of the second; second segment enlarged occupying more than half of the length and hair only on external margins; central area yellow and bare; distal half narrow and completely pilose. Proboscis slender and very long, over twice the length of the head.

Thorax: scutum dark-brown with black and yellow hairs, and three very distinct longitudinal bands of yellowish brown pruinosity. Post-pronotal lobe, notopleura, post-alar callus and scutellum apex with pruinosity slightly lighter. Notopleura with tuft of black hair (dorso-lateral view). Pleura with greyish white pruinosity and predominantly white hair. Legs slender; coxae with pruinosity and pilosity similar to pleura; trochanters, tibiae, femora and tarsi dark yellow with yellow pilosity, with some sparse black hairs; tibiae with black hairs in dorsal view. Wing fumose; r5 cell closed with very long petiole; appendix of R4 absent; venation yellowish brown.

Abdomen: yellowish brown darkened on distal tergites; tergites 1–2 yellow with black hairs; tergites 3–4 darker yellow with black hairs; tergites 5–7 dark yellow with predominantly white hairs; Sternites 1–2 yellow, covered with white pruinosity and white hairs; sternite 3 onward darker, but with same pruinosity and pilosity patterns.

Terminalia (paratype). Tergites IX and X, cercus and hypoproct as in figure (fig. 11D). Tergite IX fused, narrowed in the center. Tergite X divided into two pieces with internal lateral margins widened, creating a membranous space between the contact area of the internal lateral margins and tergite IX. Cercus with margins rounded and apex rounded; Hypoproct rounded, reaching half of the cercus length. Hypogynium + hypogynial valve (fig. 11E). Hypogynium subtriangular with lateral margins almost straight from middle to apex and middle to base, both meeting in the middle of the structure; apex with a v-shaped slit reaching the hypogynial valve. Genital fork (fig. 11F) with slender arms widely separated; anterior margin straight with slight median indentation; lateral extremities slightly acuminate; spermathecal ducts long and sclerotized; Spermatheca (fig. 11F) heavily pigmented, elongated with apex slightly narrowed.

Paratypes variations. Body length 8.6–11.0 mm; wing length 9.4–10.0 mm; wing width 3.0– 3.7 mm; I.F. 2.7–2.9; I.D. 1.0.

Male: unknown.

Distribution. Brazil (Maranhão, Tocantins, Bahia).

Type material. Holotype ♀. “[ BRAZIL] BAHIA \ Santa Rita\ E. Dente IV.[19]58” ( MZUSP). Paratypes 61 ♀. “ BAHIA \ Santa Rita\ E. Dente IV.58 ” (2♀ INPA, 2♀ MPEG, 2♀ CEUFT, 2♀ MZUSP); “ BRASIL, TO, Peixe\ V.2011, malaise\ M. A. Bragança leg. ” (♀ CEUFT); “ Brasil (MA), Carolina\ Fazenda Santa Rita\ Isca eqüina , 19–21.iv. \2004, J.T. Câmara, col.” (2♀ INPA, 2♀ CZMA); “ Brasil (MA), Mirador\ Parque Est. Mirador\ Base da Geraldina” “Armadilha Malaise\ 23.iv – 04.v.2007, F.\ Limeira-de-Oliveira.” (4♀ CZMA); “ Brasil (MA), Mirador\ Parque Est. Mirador\ Base da Geraldina” “Armadilha Suspensa\ 01–06.v.2007, F.\ Limeira-de-Oliveira.” (4♀ CZMA); “ Brasil (MA), Mirador\ Parque Est. Mirador\ Base da Geraldina” “Armadilha Malaise\ 06–20.v.2007, F.\ Limeira-de-Oliveira.” (8♀ CZMA); “ Brasil (MA), Mirador\ Parque Est. Mirador\ Base da Geraldina” “Armadilha Malaise\ 20.v–02.vi.2007, F.\ Limeira-de-Oliveira.” (6♀ CZMA); “ Brasil (MA), Mirador\ Parque Est. Mirador\ Base da Geraldina” “Isca Equina \ 19–23.iv.2007, F.\ Limeira-de-Oliveira.” (♀ CZMA); “ Brasil (MA), Mirador\ Parque Est. Mirador\ Base da Geraldina\ 06°37’25”S /45°52’08”\Armadilha Malaise\ 10–16.v.2013, F. Limei\ra-de- Oliveira; L. L. M.\ Santos & L. S. Santos.” (25♀ CZMA).

Etymology. the specific epithet honor the dipterist Dr. Inocêncio de Sousa Gorayeb, specialist in Tabanidae .

Discussion. easily differentiated from other species by the first flagellomere clearly wider than long.