Afroestricus sankofa, 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 : 47-49

publication ID 10.11646/zootaxa.1041.1.1

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scientific name

Afroestricus sankofa

sp. n.

Afroestricus sankofa , sp. n.

Figs. 121–130 View FIGURES 121–130 , 195

Male. Body 12.2–14.2 mm; wing 7.8–8.8 mm. Head: Tomentum and setae mostly yellowish. Head: Face with six to eight black bristles, sometimes sparse black setae dorsally; FHWR 1.0:4.5–1.0:4.8. Antenna brownish­yellow, scape blackish, longest ventral seta as long as scape; flagellum long and narrow, 1.5X as long as scape; FWLR 1.0:3.0–1.0:3.8. Frons yellowish tomentose; setae slightly longer than scape. Occiput gray tomentose with white setae; seven to 12 strong postocular bristles present dorsally, bristles short, thick, and usually black, each slightly curved forward with tip before margin of eye anteriorly.

Thorax: Pronotum with black bristles and mixed black and yellow setae. Mesonotum with two narrow median brown tomentose stripes and two lateral spots, stripes separated by brownish­yellow tomentum, tomentum otherwise yellow to yellowish­gray; setae mostly black, abundant anteriorly, laterally, and between rows of dorsocentral bristles, anterior setae slightly longer than scape; row of six to seven long dorsocentral setae and bristles extending well before transverse suture, anterior setae shorter and much thinner, about 2/3 as long as bristles; five long, thick, bristles present laterally. Scutellum gray tomentose with yellow setae, black marginal bristles, and preapical groove. Pleuron mostly gray tomentose, anepisternite yellowish; setae mostly yellow; one black or yellow anepimeral bristle present. Halter yellow with a red knob.

Wing: As Fig. 3a View FIGURES 3–4 except as follows. Crossvein r­m beyond middle of cell d, much longer than CuA 1 +M 3 when present, m­cu sometimes present. Cell m 1 WR 1.0:3.3:3.3– 1.0:3.9:1.0:4.0.

Leg: Coxae and trochanters black, former gray tomentose with abundant pale yellow vestiture. Femora yellow with stout black bristles; narrow apex of middle femur sometimes and hind femur always brown. Middle femur with one posteroventral bristle preapically. Hind femur with posteroventral row of bristles arched posteriorly; HFWLR 1.0:3.4–1.0:3.7. Tibiae yellow with mostly black bristles; apex of hind tibia brown. Tarsi yellow with mostly black bristles, apex of basal two tarsomeres of tarsi and at least apical 1/2 of apical three tarsomeres brown; fore and middle tarsi with sparse yellow bristles. Abdomen: Mostly gray tomentose, terga mostly brown tomentose; segments 7 and 8 reddish, sparse tomentose dorsally, dense laterally. Setae mostly white, sparse to abundant black setae present on apical three to four terga.

Terminalia ( Figs. 121–126 View FIGURES 121–130 ): Yellowish­brown with yellow apical margins. Cerci short, slightly longer than wide. Epandrium apically slightly wider than basally, widest medially; apex with rounded in lateral view; dorsal margin notched medially; apical margin with long, dense, yellow setae. Gonostylus distinctive. Distiphallus horizontal, weakly undulant ventrally; epiphallus narrow dorsally. Gonocoxite narrow apically, pointed apex at apical margin of epandrium. Hypandrium round apically.

Female. Differs as follows: Body 11.6–14.2 mm; wing 7.8–9.3 mm; FHWR 1.0:3.8– 1.0:3.9; FWLR 1.0:3.5–1.0:4.4; m 1 WR 1.0:2.8:3.0–1.0:4.3:4.5; HFWLR 1.0:4.7–1.0:4.9. Head: Facial vestiture less dense. Thorax: Halter entirely yellow. Leg: Femora slender. Abdomen: Apical three to four segments with two to four bristles along apical margin; bristles unusually stout, black or yellow. Terminalia ( Figs. 127–130 View FIGURES 121–130 ): Brown. Tergum 9 entirely sclerotized, about 1/2 as long as circus. Spermatheca smooth, slightly wider apically. Genital fork distinctive.

Type material. Holotype M, GHANA [=Gold Coast]: N. Territories, Yapi [Yapei? 9°09’58”N 1°09’27”W], ix–xi.1915, Dr. J.J. Simpson ( BMNH) GoogleMaps . Paratypes: 4 M, 8 F, same data as holotype ( BMNH); 1 M, Gold Coast, N. Territories, xi.1915, Dr. J.J. Simpson [male terminalia, slide 52] ( BMNH) GoogleMaps .

Etymology. Akan sankofa , noun in apposition, for a mythical bird that flies forward with its head turned posteriorly. The bird symbolizes the fact that the past serves as a guide for the future.

Distribution ( Tables 1, 2; Fig. 195). Known only from the type locality; collected from September to Novenber.

Remarks. Afroestricus sankofa is distinguished from congeners by the characters in the key and terminalia ( Figs. 121–130 View FIGURES 121–130 ). It is most similar to A. vorax but lacks the dorsoapical notch on the epandrium.