Ommatius castroi Vieira, Bravo & Rafael

Vieira, Rodrigo, Bravo, Freddy & Rafael, José Albertino, 2010, Ommatius Wiedemann, 1821, normus species-group (Diptera, Asilidae): description of two new species and comments on Brazilian species, Zootaxa 2344, pp. 39-51 : 40-42

Ommatius castroi Vieira, Bravo & Rafael sp. nov.

( Figs. 1–7 )

Male. Holotype. Head. Antenna brown; 2 ocellar setae; vertex brown, golden tomentose; face golden tomentose; face with 6 brown mystacal macrosetae; frons brown, sparsely golden tomentose; palpus yellowbrown setose; proboscis dark brown with white and yellowish ventral setae; labial setae yellow-brown; occiput gray tomentose; occipital setae whitish and yellowish; 3–4 postocular macrosetae.

Thorax. Antepronotum gray tomentose on the lateral margin and golden tomentose on dorsal margin; mesonotum dark brown, laterally golden-grayish tomentose; postpronotum brown; pleuron brown, gray tomentose. Macrosetae/setae thorax: 2 notopleural macrosetae; 1 supralar macroseta; 1 postalar macroseta; 4 pairs of dorsocentral macrosetae; 2 apical scutellar macrosetae; discal scutellar setae yellowish; metanepisternal and katatergal macrosetae yellowish.

Wing. Without costal dilation; crossvein r-m passes slightly beyond middle of cell d; R4+5 beyond apex of cell d; stem of halter yellow with yellow to brown knob.

Legs. Hind femur moderately swollen; fore and middle femora mostly yellow, except brown stripe extending from 1/2 of apical anterior to 1/3 of the dorsal; hind femur with basal 2/3 yellow and dorsoapical 1/ 3 brown; fore and middle tibiae yellowish; hind tibia yellowish on basal 1/2, and brownish on distal 1/2; fore and middle tarsi with basal 3/4 of first tarsomere yellowish, apical 1/4 brownish; hind tarsus with first tarsomere brown. Macrosetae/setae legs: fore coxa with anterior yellow setae; fore femur with 1 anterior macroseta and only yellow setae ventrally; middle femur with 3 anterior macrosetae and only yellow setae ventrally; middle femur with 2 brown preapical posterodorsal macrosetae; hind femur with 3 dark brown anterior macrosetae, 7 brownish anteroventral macrosetae, 2–3 posteroventral macrosetae (1 basal and 1–2 apical); hind tibia with apical spur-like macroseta; fore tarsus with 1 yellow macroseta.

Abdomen. Slightly clavate; tergites brown; sternites brown with apices yellow-brown; tergite 1 lateral macrosetae yellowish; tergites yellow and brown setose; sternites yellow and white setose.

Terminalia ( Figs. 1–7 ). Brown. Epandrium short with bifid apex ( Figs. 1–3 ); sclerite interepandrial wide with rounded anterior margin ( Fig. 2 ); cercus truncate ( Fig. 2 ); gonocoxite with sinuous internal margin ( Fig. 3 ), its median portion with moderately short macrosetae ( Fig. 3 ); membrane between gonocoxites pilose ( Fig. 3 ); hypandrium with triangular posterior margin ( Fig. 3 ); subepandrial sclerite with an invagination on the basal margin ( Fig. 4 ); gonostylus with basal portion wider than apex ( Fig. 5 ). Apex of gonostylus slightly acute ( Fig. 5 ). Gonostylus 3.4 times longer than its greatest width in lateral view ( Fig. 5 ); ejaculatory apodeme with basal 2/3 wide and apical 1/3 narrow ( Fig. 6 ); phallus 2.3 times longer than greatest width of ejaculatory apodeme in lateral view ( Fig. 6 ); anterior margin of phallus slightly convex in dorsal view ( Fig. 7 ).

Size. Body length 10 mm; wing length 7.8 mm.

Holotype condition. 2 left notopleural macrosetae lost.

Female. Unknown.

Variation. The following variation were observed in the paratype specimens: 3–6 brown mystacal macrosetae; 4–5 postocular macrosetae; 3 pairs of dorsocentral macrosetae; crossvein r-m at middle of cell d; knob of halter yellow; first tarsomere of middle tarsus brownish; epandrium with a slight salience below the bifid apex of 1 epandrium, but without a pointed projection; length 8–11.5 mm, wing 6.7–8.4 mm.

Etymology. The name castroi is dedicated to Ivan Farias Castro, an entomologist from Universidade Estadual de Feira de Santana, Brazil, who stimulated and helped the senior author in the Asilidae studies.

Geographical records. Brazil: Amapá State.

Type material examined. Holotype: [ BRASIL], Serra do N.[avio], [Amapá], 24.x.1957, J. Lane – leg / São Paulo Insect Collection / Ommatius neotropicus Curran dt. A. Scarbrough / Holótipo Ommatius castroi Vieira, Bravo & Rafael (3 MZUSP).

Paratypes: [ BRASIL], Serra do Navio, [Amapá], 28.ix. [19]57, J. Lane. Leg / São Paulo Insect Collection / Ommatius neotropicus Curran dt. A. Scarbrough (1 3 MZUSP); same data as holotype (2 3 MZUSP); [ BRASIL], Serra do N.[avio], [Amapá], 19.x.1957, J. Lane. Leg / São Paulo Insect Collection / Ommatius neotropicus Curran dt. A. Scarbrough (2 3 MZUSP); [ BRASIL], Serra do N.[avio], [Amapá], 15.x.1957, J. Lane. Leg / São Paulo Insect Collection / Ommatius neotropicus Curran dt. A. Scarbrough (1 3 MZUSP); Serra do Navio, Terr.[itório] [do] Amapá, BRASIL, 27.ix.1957, K. Lenko. Leg / Ommatius neotropicus Curran dt. A. Scarbrough (1 3 MZUSP); [ BRASIL], Serra do Navio, [Amapá], 29.ix.1957, J. Lane. Leg / São Paulo Insect Collection / Ommatius neotropicus Curran dt. A. Scarbrough (1 3 MZUSP); [ BRASIL], Serra do N.[avio], [Amapá], 12.x.1957, J. Lane. Leg / São Paulo Insect Collection / Ommatius neotropicus Curran dt. A. Scarbrough (1 3 MZUSP); Serra do Navio, Terr.[itório] [do] Amapá, BRASIL, 11.x.1957, J. Lane leg / Ommatius neotropicus Curran dt. A. Scarbrough (1 3 MZUSP).

Figures

FIGURES 1 – 7. Ommatius castroi sp. nov. Holotype 3: 1. Male terminalia lateral. 2. Male terminalia dorsal. 3. Male terminalia ventral. 4. Subepandrial sclerite. 5. Gonostylus. 6. Phallus and ejaculatory apodeme in lateral view. 7. Phallus and ejaculatory apodeme in dorsal view. cercus (cer); epandrium (ep); ejaculatory apodeme (ej apod); sclerite interepandrial (sc iepd); gonocoxite (gnx); gonostylus (gns); hypandrium (hyp); phallus (ph); subepandrial sclerite (sep scl).