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UNITED STATES NATIONAL MUSEUM BULLETIN 2 24 



the subepistoma is small, wide, deeply concave, and 

 nearly horizonal. The front is quite short and vertical, 

 wide but flat. The ocellarium is large, wide, low with 

 3 or 4 pairs of long, slender, bristly hairs all arising 

 immediately behind the ocelli ; together with the ante- 

 rior ocellus the protuberance overhangs the front. 



Thorax : The mesonotum is short and is moderately 

 high anteriorly. It bears a row of 5 or 6 very fine, 

 long, erect, bristly acrostical hairs and also scattered, 

 sparse, long, fine, dorsocentral hairs that become 

 longer but remain slender and delicate in front of 

 the scutellum. All bristles are extremely weak and 

 slender ; consist of 2 notopleural bristles, no supraalar, 

 but a patch of 10 or 12 fine, black hairs present over the 

 wing and similar hairs on the postalar area. Scutellar 

 margin with 5 pairs of exceptionally fine, quite long, 

 stiff blackish hairs. Metanotum concealed by the 

 slightly arched abdomen and the long, convex scutel- 

 lum, which bears no discal pile. Metanotal callosity 

 pubescent only. Metapleuron with a wide, vertical 

 band of 12 to 16 quite slender, long, yellow hairs. 

 Upper sternopleuron pubescent only. Postmeso- 

 pleuron and upper mesopleuron with considerable long, 

 fine pile. Pteropleuron and hypopleuron pubescent 

 only, the latter with long pubescence. The whole 

 length of the lateral metasternum, which is greatly 

 thinned, is long, bristly pilose. Ventral metasternum 

 pubescent and without pile, except perhaps 2 or 3 mi- 

 nute hairs laterally. Postmetacoxal area broad and 

 membranous. 



Legs: The hind femur elongate, rather strongly 

 swollen distally, and spindle-shaped and slender bas- 

 ally. Anterior and middle femora stout and moder- 

 ately swollen. The hind femur densely short, 

 appressed, black setate; many of the lateral setae are 

 yellow. Apex with weak bristles dorsally. Hind 

 femur bears 1 anterior and 2 medial bristles and a 

 weak, medial row of 7 or 8 bristles on the outer half. 

 Hind tibia rather slender, not quite as long as femur ; 

 it is gradually thickened and curved near the apex. 

 This tibia is densely short, subappressed setate with 

 short, sharp, oblique, rather stout, spinous bristles 

 numbering 5 dorsal, 8 lateral, and 3 or 4 medial. Apex 

 with still longer bristles, 3 lateral, 2 dorsal, 4 or 5 ven- 

 tral, and 2 medial. Hind basitarsus very strongly 

 thickened and cylindrical ; it is at least as thick if not 

 thicker than the tibial apex. Tibia without any mat 

 of setae. Middle femur rather stout but thickened 

 chiefly through the middle; the ventral margin bears 

 about 7 quite long, stout, slightly curved, black bristles ; 

 anterodorsal surface of middle femur with double row 

 of 6 long, slightly curved, oblique, outwardly directed 

 black bristles which begin near the basal third. Middle 

 tibia with very slender, long, black bristles numbering 

 5 or 6 anterior, 5 or 6 anterodorsal, and 10 posterior 

 in a double row beginning at the basal third. Anterior 

 femur with long, fine, white pile posteriorly and 

 shorter pile ventrally and 4 or 5 quite slender, black 

 bristles posteroapically ; the tibia has long bristles con- 

 sisting of 5 posteroventral and 4 posterior bristles. 



Apex without spine; claws of moderate length, sharp, 

 strongly curved at the immediate apex ; pulvilli nearly 

 as long as claw ; empodium long, fine and bristlelike. 



Wings: The marginal cell is open widely, fourth 

 posterior cell slightly narrowed. Anal cell closed 

 and petiolate. Alula moderately developed. The am- 

 bient vein ends at the end of the anal cell. 



Abdomen: The abdomen at the base is not quite 

 as wide as the mesonotum; it is gently tapered and 

 very shallowly convex across the tergites. First 

 tergite about half as long as second. Sides of the 

 first tergite with some long pile and a few, stiff, not 

 bristly hairs. Lateral margins of second and third 

 tergites also with rather long, yellow pile, becoming 

 somewhat shorter and scantier beyond. Dorsal pile 

 abundant but fine and short and appressed. Males 

 with 7 tergites, the seventh fully three- fourths as long 

 as the sixth. Females with 8 tergites, the eighth be- 

 ing half as long as the seventh. Male terminalia con- 

 spicuous and half rotate. The superior forceps 

 have a pair of long, slender processes which turn at 

 right angles and extend obliquely upward and are 

 met by divergent, ventral processes. Female terminalia 

 minute, barely protruding beyond the eighth tergite. 



Distribution: Ethiopian: Lasiodamalis capensis 

 Wiedemann (1828); heterocerus Wiedemann (1821) 

 [=ano?nalus Wiedemann (1821)]. 



Wiedemann (1828) lists as synonyms of Damalis 

 capensis the two species Dasypogon anomalus Wiede- 

 mann (1821) and Dioctria heterocera Wiedemann 

 (1821). Hermann (1926) designates Damalis capensis 

 as type of genus of Lasiodamalis Hermann. If Wiede- 

 mann was correct, one of these last two names must 

 take precedence over Lasiodamalis capensis Wiede- 

 mann. Kertesz (1909) placed Lasiodamalis capensis 

 Wiedemann as synonym of Lasiodamalis heterocerus 

 Wiedemann. Without having studied types of both 

 species, I cannot change Hermann's allocation. 



Genus Lophurodamalis Hermann 



Figures 25, 409, 824, 833 



Lophurodamalis Hermann, Verh. zool.-bot. Ges. Wien, vols. 

 74-75, p. 188, 1926. Type of genus: Damalis hirtiventris 

 Maequart, 1846, by original designation. 



Flies with broad wings, sometimes robust abdomen, 

 exceptionally high arched mesonotum and minute third 

 antennal segment with long style. The midtibia has 

 a terminal stubby process or protuberance; the middle 

 tarsal segments may also have ventral processes. 

 Length 1 to 15 mm. 



Head, lateral aspect : The head is short and high, the 

 occiput is nowhere prominent, but is a little better 

 developed ventrally because of the gradual recession 

 of the eye. The face is only moderately produced be- 

 yond the eye, gently rounded and still shorter beneath 

 the antenna. Pile of the occiput fine and scanty, 

 changing to slender bristles along the middle of the 

 eye, the upper elements scarcely thicker than those 



