Oropezella spathula, Ale-Rocha, Rosaly & Freitas-Silva, Rafael Augusto Pinheiro De, 2014

Ale-Rocha, Rosaly & Freitas-Silva, Rafael Augusto Pinheiro De, 2014, New species of Oropezella Collin (Diptera, Hybotidae, Ocydromiinae) from Brazil and Costa Rica, with comments on the relationships among species-groups, Zootaxa 3852 (5), pp. 501-539 : 526-527

Oropezella spathula sp. nov.

( Figs 85–92 , 122)

Diagnosis. Frons long and holoptic, almost as long as face; scutum brown, paler on anterior margin, entirely and densely covered with golden pruinescence, legs yellow, mid and hind tarsi somewhat darkened.

Etymology. From the Latin “ spatha ” (spoon), in reference to the spatula-like right surstylus.

Description. Holotype male. Body: 2.7 mm. Wing: 3.3 mm. Head: antenna brown, located above middle of head; scape as long as pedicel; postpedicel conical, flattened, as long as scape and pedicel combined, 2.5 times longer than wide; stylus bare, apical. Ocellar triangle protuberant, two pairs of proclinate ocellar setae, anterior pair elongate, posterior pair short. Holoptic, frons as long as two-thirds length of face. Proboscis and palpus pale brown, palpus bearing 1 long median and 1 shorter lateral bristle. Postcranium brown with golden pruinescence; postoculars elongated, scattered, upper setae longest. Thorax: entirely covered with dense golden pruinescence; scutum brown, paler on anterior margin, scutellum yellow to brown, with apical blackish mark, mediotergite brown, mesopleuron, postpronotal lobe and postalar callus yellow. Bristles thin, short and scattered; acr and dc uniserial. Differentiated bristles: 1 strong npl; posterior dc longer than anterior dc; 1 short pal; 1 long and strong apical sctl and 1 lateral bristle half length of apical. Wing (Fig. 122): hyaline, not infuscate; R1 reaching C at midlle of wing; cell dm emitting 2 veins; cell cu p present. Legs: yellow, mid and hind tarsi somewhat darkened, coxae and trochanters with yellow pruinescence. Hind tibia slightly clavate near apex. Differentiated bristles: fore tibia with 2PV near middle; mid femur with 1A sub-apical; mid tibia with 2A before middle and 2A after middle, 1A subapical, 1PD near base and 1V at distal third; hind femur bearing 1A sub-apical, 2AV at basal half and 1AV at apical half; hind tibia with 2A, 1D and 1V near middle and 1D sub-apical. Abdomen: tergites 1–4 and all sternites pale brown, tergites 5–8 shiny dark brown; golden pruinescence on tergite 8 and sternites 6–8. Bristles brown, thin, short and scattered. Terminalia: hypandrium about as long as wide, apex concave ( Fig. 85 ); epandrium short, not deeply cleft dorsally, epandrial lamellae broadly fused basally ( Fig. 86 ); left epandrial lamella shorter than right, with stout dorsoapical process, wider near apex ( Figs 86, 88 ); right surstylus about as long as left, wide in basal half ( Fig. 89 ); left surstylus simple, slightly concave on inner surface ( Fig. 88 ); articulated distal portion of phallus simple, slightly more than half lenght of basal portion, basal process more than half length of articulated distal portion of phallus, pilose near base ( Fig. 87 ). Female. Similar to male. Ovipositor ( Figs 90–92 ): eighth segment elongated; tergite 8 divided in two lateral sclerotized plates, membranous medially; sternite 8 very narrow, six times longer than wide.

Type material. HOLOTYPE ♂, labelled: BRASIL, Minas Gerais / Divinópolis, 16.i.2004 / R. C. Oliveira, Arm[adilha] Malaise ( INPA) (Abdomen collapsed; left postpedicel and stylus lost, as well as three right legs; not dissected). Paratypes: BRAZIL, Minas Gerais: 1♀, Divinópolis, 01.xi.2003, R.C. Oliveira, Malaise ( INPA); 1?, idem, 01.vii.2004; 2♂, 3♀, idem, Pedra do Indaiá, 26.ii.2004; 1♂, 1♀, idem, 01.iv.2004; 1?, idem, 16.v.2004 ( INPA); 2♀, idem, 01.vii.2004; 3♀, idem, 16.ix.2004 (all housed at INPA).

Geographical distribution. Brazil (Minas Gerais).

Figures

FIGURES 85 – 92. Oropezella spathula. Hypopygium: 85, ventral aspect; 86, dorsal aspect; 87, phallus, lateral aspect (hypandrium spotted); 88, 89, left and right epandrial lamella and surstylus, respectively, lateral aspect. Female terminalia: 90, dorsal aspect; 91, ventral aspect; 92, lateral aspect. Scale bar: hypopygium = 0.1 mm; female terminalia = 0.3 mm.