ROBBEK FLIES OF THE WORLD 



529 



and tufted on the surface of the scutelluni. Humerus 

 pilose. Stout, long, lateral bristles are present and con- 

 sist of 3 notopleural, 3 postsupraalar, 1 -weak supra- 

 postalar, 3 postalar, and 3 pairs of closely set, medially 

 remote, stout, exceptionally long scutellar bristles. 

 Propleuron with abundant, long, fine pile and weak 

 bristles on the pronotmn. Mesopleuron with only scat- 

 tered, long, fine hairs dorsally and centrally. Upper 

 sternojjleuron with 20 or more long, fine, hairs. Upper 

 pteropleuron with a similar niunber ; posthypopleuron 

 with 6 to 8 long, slender bristles and with a patch of 

 pubescence; metapleuron with about 20 moderately 

 stout, long bristles. Slopes of the metanotum strongly 

 buUose, pubescent only. Lateral and ventral metaster- 

 num with long pile; postmetacoxal area membranous 

 and pubescent; posterior basalare with 2 or 3 long, 

 crinkled hairs ; tegula with 6 or 7 minute setae ; squama 

 with a multiple fringe. 



Legs: All the femora are stout, pubescent or poUi- 

 nose, with unusually nimierous, stout spines. The mid- 

 dle femur and tibia have unusually heavy mats of 

 dense, long pile posteroventrally. Hind femur bears 

 short, appressed setae above, long scattered pile lateral- 

 ly and ventrally ; dorsally a subapical circlet of 4 stout, 

 long bristles; 1 single bristle dorsomedially at apex; 

 and a lateral row containing 6 elements, tlie sixth form- 

 ing part of the subapical circlet. Ventrolaterally there 

 are 5 or 6 bristles. The hind tibia contains a double 

 dorsal row of 6 or 7 elements, 5 or 6 somewhat more 

 slender, lateral bristles, and 3 especially stout, ventro- 

 lateral bristles. Medial surface with appressed brush 

 of setae continued on to the first two tarsal segments; 

 apex with 2 medial, 1 dorsal, 2 lateral, and 3 or 4 

 ventral bristles. Middle femur with 1 stout, anterior 

 subapical, 1 posterior at outer third, 1 anterior at basal 

 third, and 3 or 4 anteroventral bristles. This tibia 

 bears 4 dorsal, 1 posterior near the apex, 2 or 3 ventral 

 on the outer half, and a dense fringe posteriorly and 

 anteriorly of very long, slender bristles or bristly hairs. 

 Anterior femur without bristles but with a dense, 

 posteroventral fringe of long, bristly hairs continued 

 posteriorly on their tibia. This tibia has 6 dorsal 

 bristles, beginning at the basal third, and 2 or 3 long, 

 posteroventral bristles. All tarsi end in large, truncate 

 pulvilli, a stout, long empodium, and moderately sharp 

 claws. 



Wings : The wings are slender and subhyaline. The 

 marginal cell is closed and stalked ; the anterior branch 

 of the third vein ends shortly above the apex; first 

 posterior cell narrowed by the basal expansion of the 

 second posterior cell. Fourth posterior cell closed and 

 stalked, its closing vein convex; anal cell closed ; second 

 basal cell ends in 2 veins with a short fusion of veins 

 beyond ; lower end vein of the discal cell pulled back- 

 ward imtil nearly parallel with the anterior margin of 

 the cell. Alula large, ambient vein complete. 



Abdomen: The abdomen is subcylindrical and at- 

 tenuate, longer than the wings in the female. The first 

 tergite is laterally swollen and ridged. Pile of abdomen 



535914—62 — pt. 2 S 



scanty, short down the middle of the tergites, appressed 

 and setate and considerably longer on the lateral third, 

 but also more or less appressed. All the tergites bear 

 weak bristles near their posterior margin and restricted 

 to the lateral third. Fii-st tergite laterally with 3 or 

 4 stout bristles and long delicate pile. Postmargin of 

 second tergite with 4 to 6 slender bristles, a like number 

 on third to sixth tergites. Eight tergites present in the 

 male. Six tergites present in the female, the seventh 

 at least partly incorporated in the ovipositor, as well 

 as the eighth. Both of these are greatly compressed 

 laterally and the eighth is more than twice as long as 

 the seventh. In the male the superior forceps are very 

 long, relatively narrow from lateral aspect, obtusely 

 rounded at apex with long, obliquely protruding 

 proctiger. Gonopod exceptionally small and greatly 

 reduced. Eighth stemite quite large, posteriorly pro- 

 duced, with conspicuous posteroventral, matted brush 

 of long, coarse pile. Hypandrium hidden, if present. 

 Distribution: Ethiopian: Neodasophrys androclea 

 Walker (1849) ; hirsutus Eicardo (1920) ; natalensis 

 Kicardo (1920). 



Genus Dysclytus Loew 



FiouBES 320, 726, 1458, 1468, 1605, 2221, 2237, 2292 



Dysclytus Loew, Ofvers. Svenska Vet.-Akad. Forhandl., voL 14, 

 pp. 361, 363, 1858. Type of genus: Asiliis firmatus Walker, 

 1857, as Dysclytus spvrcus Loew, 1858, by monotypy. 



Kather large flies with stout, well developed bristles 

 but reduced pile. The face is moderately produced 

 throughout its length and gently convex as in Neolo- 

 phonotus Engel, with bristles begiiming beneath the 

 antenna. Bristles of legs are emphasized with an espe- 

 cially numerous, doubled or trebled row on the ventral 

 surfaces of the middle and hind femora. Numerous, 

 long, dorsocentral bristles present on the posterior half 

 of the mesonotum ; the occipital bristles are not procli- 

 nate but very stout; the third antennal segment is un- 

 usually slender. Length 24 to 28 mm. 



Head, lateral aspect: The face is moderately pro- 

 duced throughout and gently convex, the eye of mod- 

 erate length, strongly convex anteriorly, nearly plane 

 through the middle and rising above the occiput dorsal- 

 ly ; it is strongly recessive antero ventrally on the lower 

 fourth. The occiput is moderately thick tliroughout, 

 the pile on the ventral half quite dense, long and fine, 

 replaced by bristles at the middle ; the first 4 or 5 ele- 

 ments are pale, with also 10 or more short, stout, rather 

 straight, dorsal bristles on each side which are usually 

 black. The proboscis is rather short, subcylindrical, 

 very slightly tapered from the dorsal aspect, with a 

 low, medial ridge; it bears numerous, dorsal, lateral 

 and ventral stiff hairs at the apex. The proboscis is 

 directed chiefly downward. Palpus with a crease just 

 beyond the basal third suggesting that two segments 

 may be involved; the outer portion is slightly offset, 

 the basal part elbowed but the whole seemingly fused; 

 apical piece bears numerous, lateral, dorsal and apical. 



