ADAMS: DIPTERA AFRICANA. 169 



TRYPETID^. 

 Dacus. 



(Meigen, Syst. Beschr., VI. 21; 1830.) 



Dacus africanus, n. sp. 



Male: Close to D. brevis Coq. and D. sigmoides Coq., from 

 Cape Colony. Head yellow ; front reddish yellow in the mid- 

 dle, grayish pollinose along the orbits, ocellar dot, frontal lu- 

 nule, three spots on orbits, and a spot in center of front, black, 

 the three spots on orbit each bears a black, bristly hair ; a ver- 

 tical and postvertical bristle present ; face straight, sloping on 

 the sides ; cheeks yellow, and furnished with a black spot be- 

 low eyes ; occiput j^ellow and reddish yellow variegated ; antennae 

 about as long as head, yellow, tip of third joint and arista 

 largely blackish. Thorax opaque reddish, finely scrobiculate, 

 sparse pile whitish ; humeri, a stripe beginning on upper mar- 

 gin of sternopleursp, traversing the mesopleur^e, and along 

 transverse suture to near middle of mesonotum, a spot on 

 metapleurse, the scutellum except the extreme base, and hal- 

 teres yellow ; two small spots just in front of transverse suture, 

 two large ones behind it, a stripe just in front of the yellow of the 

 mesopleurt^e, the sternopleurse largely, two spots on metanotum, 

 and metapleura largely blackish ; three small black bristles be- 

 tween humeri on anterior margin of thorax, one on side just 

 behind humeri, one at base of transverse suture, one postalar, 

 one intraalar, an apical pair of scutellar bristles, and one meso- 

 pleural bristle present. Abdomen reddish, finely scrobiculate, 

 and with whitish sparse pile ; third segment laterally along 

 posterior margin with a short row of black bristles ; venter 

 yellowish. Legs light yellow ; coxae blackish at base ; femora 

 on apical fourth, tibiae wholly, and tarsi apically, reddish yel- 

 low. Wings hyaline ; a fuscous stripe along first vein, from 

 base to apex, thence along costa to tip of third vein ; and an- 

 other one along lobe of anal cell to wing margin ; auxiliary cell 

 rudimentary ; tips of third and fourth veins nearly straight ; 

 small cross-vein inclined forward. Length, 7 mm. 



One specimen ; June. 



