Afroestricus fulaui, Scarbrough Table Of Contents, 2005

Scarbrough Table Of Contents, Aubrey G., 2005, Afroestricus, a new Afrotropical Ommatine (Diptera: Asilidae) genus with twenty species and two species groups, Zootaxa 1041 (1), pp. 1-76 : 23-25

Afroestricus fulaui , sp. n.

Figs. 35–44 , 193

Male. Body 10.7–12.1 mm; wing 6.4–7.1 mm. Head: Face mostly yellowish­gray tomentose, yellow dorsally; vestiture mostly yellow with six to seven black bristles on dorsal 2/3 and sparse, black setae dorsally; FHWR 1.0:3.8 –1.0:3.9. Antenna brown, longest ventral setae longer than scape or flagellum; flagellum as long as scape; FWLR 1.0:2.4. Frons golden yellow to slightly brownish­yellow tomentose; lateral setae as long as scape+pedicel. Occiput yellowish­gray tomentose with yellowish and white setae; seven to eight black postocular bristles present dorsally, latter short and thick, slightly arched forward with apex just above posterior margin of eye.

Thorax: Pronotum golden yellow tomentose; bristles yellow. Mesonotum with two brownish tomentose median stripes and two lateral spots, tomentum yellow to yellowishgray otherwise; setae long, mostly black, yellow on postpronotum, sides, and between dorsocentral bristles posteriorly; anterior setae about as long as scape; long dorsocentral setae and bristles extend forward to or just before transverse suture, longest setae 2/3 as long as first notopleural bristle; four lateral bristles present, one or two bristles per side yellow. Scutellum yellowish­gray tomentose with pale setae and two yellow marginal bristles. Pleuron yellow to yellowish­gray tomentose with yellow bristles and setae. Halter dull red.

Wing: As Fig. 3a except as follows. Yellow microtrichose. Vein R 4 moderately arched forward basally. Cell m 1 narrow basally, much wider beyond with sides slightly diverging; vein m 1 strongly arched forward basally; m 1 WR 1.0:3.6:3.9.

Leg: Coxae and trochanter black, latter pale yellowish­gray tomentose with yellowish to white vestiture. Fore femur entirely yellow, row of long, thin, yellow setae present ventrally; anterior preapical bristle yellow. Middle and hind femora yellow, narrow apex black. Middle femur anteriorly with black bristles on basal 2/3, yellow on apical 1/3; preapical, posteroventral bristle absent, long thin seta present. Hind femur with yellow bristles, one apical posteroventral and two anterior apical bristles sometimes black; HFWLR 1.0:4.1–1.0:4.3. Tibiae yellow with apex brown to black and mostly yellow bristles. Hind tibia without an apical tubercle. Tarsi mostly yellow, at least narrow apex brown; basal tarsomere yellow, narrow apex brown; all tarsi with two to four yellow bristles.

Abdomen: Mostly gray tomentose with white setae, terga 4 to 8 yellow to brownishyellow with sparse to abundant black setae medially. Apical corners of terga 3 to 7 with one stout pale yellow bristle.

Terminalia ( Figs. 35–40 ): Reddish. Epandrium narrow apically, apex digitate in lateral view; narrowly notched dorsoapically. Gonostylus distinctive. Distiphallus horizontal, apex narrow, flared vertically; epiphallus unusually narrow apically, prominent earlike process present laterally, apex truncate; ejaculatory apodeme slightly thickened medially. Gonocoxite much longer, wider, and thicker than epandrium in lateral view, curved below epandrium apically, apex truncate. Hypandrium triangular, apex wide, W­shaped.

Female. Differs as follows: Body 9.7–10.3 mm; wing 6.0– 6.1 mm; FHWR 1.0:4.1– 1.0:4.6; FWLR 1.0:2.1; HFWLR 1.0:4.5. Head: Face mostly golden tomentose with eight brown bristles, vestiture otherwise yellow. Flagellum slightly longer than scape. Frons brownish­yellow. Thorax: Mesonotum with only two stout dorsocentral bristles posteriorly. Wing: Crossvein r­m at or just beyond middle of cell d. Leg: Tarsi with most tarsomeres yellow basally; hind tarsus with only brown bristles. Abdomen: Apical segments with stout, yellow, and/or black bristles; Terminalia ( Figs. 41–44 ): Reddish. Tergum 9 membranous dorsally, sclerotized laterally and ventrally. Sternum 8 with two bristles laterally. Spermatheca wide apically and basally, surface smooth. Genital fork distinctive.

Type material. Holotype M, GAMBIA: Keneba cattle meadow, 20.viii.57 ( BMNH) . Paratypes: 2 F, Keneba cattle meadow by sweeping, 31.vi.57 ( BMNH) ; 1 F, Keneba , 20.ix.1969, J. Hamon, ( MNHN) . SENEGAL: 1 M, Kouypenntoun , 27.viii.67, J. G. Pointel, ( MNHN) ; 2 F, Senegal , 3 km SSE Brin, 11 km SW Ziguinchor 1977, Loc. No. 22 UTM 28PCJ­53­83­ ~ Lund Univ. Syst. Dept, Sweden­Gambia / Senegal, Nov. 1977 Cederholm­Danielsson­Hammarstedt­Hedqvist­Sammulsson ( MZLU) .

Etymology. The species name fulaui , a noun in apposition, refers to those people living along the Gambia River that raise cattle.

Distribution ( Tables 1, 2; Fig. 193). Known from a few localities in Gambia and Senegal; collected in June, August, and November.

Remarks. Afroestricus fulaui is distinguished from congeners by the characters in the key, the yellow bristles of the thorax dorsum and legs, and the terminalia ( Figs. 35–44 ).

Figures

FIGURES 35–44. Afroestricus fulaui, sp. n. Male terminalia: 35–37. Lateral, dorsal, and ventral views. 38. Gonostylus. 39–40. Aedeagus, dorsal and lateral views. Female terminalia: 41–42. Dorsal and ventral views. 43. Spermathecae. 44. Genital fork.

FIGURES 3–4. Character states of the wing and postocular bristles of the subgenus Afroestricus Scarbrough. 3a–b. Wing venation of the macroscelis and the minutus species groups. 4a–b. Short, erect and long, thin, postocular bristles bristles. Abbrevations: First radial cell=r1; fourth radial cell=r4; discal cell=d; radial­medial crossvein=r­m; first medial cell=m1; third medial cell=m3.