Mycodrosophila cornuta, Mendes & Gottschalk, 2019

Mendes, Mayara Ferreira & Gottschalk, Marco Silva, 2019, Description of a new Brazilian species of Mycodrosophila (Diptera, Drosophilidae) with emphasis on the morphology of phallic sclerites, Revista Brasileira de Entomologia (Rev. Bras. Entomol.) 63 (3), pp. 250-253 : 251-253

Mycodrosophila cornuta sp. nov.

Figs. 1–11

Type series: Holotype: ♂ labels with the information “ Mycodrosophila cornuta sp. nov. Mendes e Gottschalk. HOLÓTIPO ♂ /Eug.[ênio] Lefevre (S.[ão] Paulo) [ Brazil], Trav. Lopes et Oiticica, 1.XI.[19]37”. The information between the square brackets was added by us. The abdominal sclerites and the terminalia were stored in a microvial in glycerin and attached to the specimen. The right wing was mounted on a slide, as previously described, and stored with the holotype.

Type locality: The label with collection information was pointed out “Eug. Lefevre (S. Paulo)”. In a search, we found that Eugênio

252 M. F. Mendes, M.S. Gottschalk / Revista Brasileira de Entomologia 63 (2019) 250–253

post cerc epan preg sur 8 9 dec vl epand hypan phallus 10 phallapodeme 11

Lefévre is a locality in Campos do Jordão municipality, state of São Paulo, Brazil.

Diagnosis. Body color mainly dark brown; dark brown thorax; pleura mainly dark brown, with an irregular yellow area that extended obliquely from the base of the wing until the insertion of the first pair of legs; abdomen brown, with tergites I and II shinning; arista with 4 dorsal and 1 ventral branch; flagellomere brown, length 2× the length of the pedicel; facial carina brown, prominent; legs mainly dark brown, coxa and the base of other articles light brown; wings light brown; R 2+3 straight; two transversal dark bands at the proximal region of the wing, one at the height of the h vein, and the other at the height of the sc break of C and extending to CuA.

Description. ♂ Head. Dark brown; width = 1.02 mm. Eyes pilose, brown. Facial carina brown. Flagellomere brown. Aristae brown with 4 dorsal and 1 ventral branch plus a terminal fork. Orbital plates dark brown. Orbital bristles dark brown. Distance between or1 and or2 = 0.06 mm, between or1 and or3 = 0.10 mm, and between or2 and or3 = 0.04 mm. Front velvet gray, lateral margin slightly lighter. Ocelar triangle black, length approximately 1/3 of front length; anterior frontal width equal to frontal length, posterior frontal width slightly straighter than anterior width. Face dark brown. Gena brown, slightly whitish. Proboscide yellow, palps and labellum brown. Postocellar setae lost.

Thorax. Brown; scutum slightly glowing, with 10 irregular rows of acrostichal setae; pleura dark brown, with an irregular yellow area that extended obliquely from the base of the wing until the insertion of the first pair of legs; scutellum with basal scutellar setae convergent, apical scutellar setae lost. Legs mainly dark brown, coxa and the base of other articles light brown. Length: 1.25 mm, width: 0.9 mm.

Wings. Slightly brown. Lappet present in sc break, preeminent. R 2+3 straight in the direction of C. R 4+5 and M somewhat convergent, both slightly posteriorly curved. Two transverse dark bands at the proximal region of the wing, one at the height of the h vein, and the other at the height of the sc break of C and extending to CuA. bM-Cu present. Halteres yellow. Indices: C = 1.14; ac = 4.45; hb = 0.68; 4c = 1.59; 4v = 1.92; 5x = 1.28; M = 0.47; prox. x = 0.65. Length: 2.81 mm.

Abdomen. All tergites blackish brown, tergites I and II shining.

Terminalia. Epandrium horseshoe-shaped, equal height and width. Ventral lobes projected forward with approximately 15 prominent bristles. Surstylus with 5–6 prensisetae. Cerci free, pilose. Postgonites (gonopods sensu Bächli et al., 2004) prominent, fused with hypandrium, with a long seta and five small setulae near the connection with pregonites (paraphysis sensu Bächli et al., 2004). Pregonites fused with postgonites and two setulae in the inner margin. Hypandrium large, rounded and U-shaped, with almost the same size as the epandrium. Phallus (aedeagus sensu Bächli et al., 2004) long, apically tapered and bifurcated; dorsal surface of aedeagus membranous, with 2–3 spurs inclined ventrally. Phallapodeme (aedeagal apodeme sensu Bächli et al., 2004) slender, length about a half of the aedeagus length, with a ventral projection (ventral rod sensu Vilela, 1983) and apex touching and fused with the posteromedial margin of hypandrium.

♀. Unknown.

Distribution. Known only by type locality.

Etymology. The specific epithet derives from the Latin “cornutum”, which means horned, and it was proposed in allusion to the format of the aedeagus, with projections resembling horns.