536 



UNITED STATES NATIONAL MUSEXIM BULLETIN 2 24 



subapical, dorsolateral, 1 similar dorsomedial, and at the 

 apex 2 small, short, slender bristles on each side. Hind 

 tibia compartively slender, with 4 dorsomedial, 3 dorso- 

 lateral, 2 ventrolateral on the outer half; apex with a 

 circlet of 8 bristles. Hind basitarsus longer than the 

 next 3 segments. Middle femur with 2 anterior near the 

 middle; 2 short, subbasal posterior, 1 strong postero- 

 dorsal subapical, 2 rather strong, ventral bristles near 

 the base and 2 fuie, long, bristly hairs in the middle 

 ventrally. Middle tibia with 3 anterodorsal, 2 postero- 

 dorsal beyond the middle, 4 posteroventral and 3 ventral 

 bristles, of which the outer 2 are stout. Anterior femur 

 with 2 stout, long, basal ventral elements sunilar to 

 those of the middle femur. Anterior tibia with 1 antero- 

 dorsal near the base, 2 posterodorsal beyond the middle, 

 2 quite long, stout, posteroventral bristles beyond the 

 middle together with a few, fine, bristly hairs in the 

 same row. Basitarsus only as long as the first two seg- 

 ments. Tarsi end in a sharjD claw, strongly bent at the 

 apex; long pulvilli; and a long bladelike empodium, 

 only a little thickened at the base. 



Wings: The wings are slightly narrow. The mar- 

 ginal cell is closed and stalked ; the anterior branch of 

 the third vein ends shortly before the wing apex ; pos- 

 terior branch ends a little farther behind the wing apex. 

 All of the posterior cells are widely open, excej^t the 

 fourth which has a long stalk. The lower end vein of 

 the discal cell is quite long, parallel to the wing margin, 

 the upper vein vertical to the wing margin. Fourth 

 posterior cell strongly convex anteriorly and distally; 

 second basal cell ends in two veins. The anal cell is 

 closed with a short stalk; alula large, the ambient vein 

 complete. The wing is tinged with brownish yellow, the 

 apical third and the posterior margin with sepia villi, 

 the marginal cell rippled but the costa and cells not 

 expanded. 



Abdomen : The abdomen is elongate, cylindi'oid, more 

 narrow than the mesonotum. The first tergite is a little 

 wider, bearing 2 stout, reddish bristles and numerous, 

 long, fine, bristly hairs. Pile of the abdomen rather 

 short and flat appressed. Posterolateral margins of the 

 tergites with numerous, weak bristles or bristly hairs. 

 First sternite apilose, the remaining sternal pile short 

 and stiff. Eight tergites in the male, the eighth dorsally 

 a fifth as long as the seventh but a little longer laterally. 

 Female with seven tergites ; the eighth is much smaller, 

 triangular, arched, convex and forming most of the 

 short ovipositor; ninth and tenth tergites of equal 

 length, a little shorter than the eighth, the tenth is 

 narrow and laterally compressed. Male terminalia con- 

 spicuous, not rotate; the superior forceps with a me- 

 dially directed, narrow process separated at the base. 

 Hypandrium quite short and imdivided. Aedeagus 

 tubular. In the male the eighth sternite has a trans- 

 verse band of nimierous, stiif, erect bristles, reddish and 

 black. 



Distribution : Neotropical : Lycomya germainii Bigot 

 (1857). From Chilean subregion. 



Genus Antilophonotus Lindner 



Antiloplionotus Lindner, Jhft. Ver. vaterl. Naturk. Wiirtemberg, 

 Stuttgart, vol. 110, p. 33, 1955. Type of genus: Antilo- 

 phonotus macuUpennis Lindner, 1955, by original 

 designation. 



The following description is from Lindner. 



A new genus which, with its two strong up-curved scutellar 

 marginal bristles (according to Engel's definition, 1925), belongs 

 in the relationship of Neolophonotus Engel but cannot be united 

 with it. Morphologically it extensively agrees with it ; how- 

 ever the lateral tubercle of the metanotum is bare, the pleura 

 are not strongly fascieularly pubescent. (The pubescence has 

 obviously not only disappeared.) The "mane" of the thorax 

 is only a little developed on the preseutellar area, which runs 

 out like a wedge cephalad. Surface of scutellum with sparse 

 erect hairs ; but instead, in addition to the marginal bristles, 

 there are numerous long snow-white, cephalad-bent hairs on 

 the margin of the scutellum. Body and p with white appressed 

 pubescence, and the tergites and sternites with stiff patulose dis- 

 cal bristles, acr on the preseutellar surface with only a few 

 bristles in two rows, quite far forward on the mesonotum with 

 a few bristles in one row. Genital apparatus of the $ short, 

 only as long as the next-to-the-last pregenital tergite. 



Distribution : Ethiopian. Antilophonotus macuU- 

 pennis Lindner ( 1955 ) . From East Africa. 



AU t ventrally with a brown longitudinal stripe which is 

 darkest on t-3 and goes over into the em-browned apical third. 

 The tarsi on p-3 are nearly aU black, on i>-l and p-2 increas- 

 ingly blackened only toward the apex. On it-1 the setation 

 is nearly all yellow, on p-2 and p-3 predominantly black, espe- 

 cially on the dark parts. Wing bordered with gray on the apex 

 and on the posterior margin up to the place where an ends 

 (Cu-2 stalked). Abdomen yellowish gray, with lighter pos- 

 terior margins and a brown longitudinal-stripe marking. The 

 middle one of these stripes is brolcen up into oblong spots by 

 the posterior margins of the tergites. The lateral stripes are 

 also broken up into spots which do not reach the posterior 

 margins but, seen from the side, are angularly curved inward 

 in the posterior angles. Pubescence and setation whitish, on 

 the dark parts short black, on the sides long patulose whitish. 

 Hypopygium very complicated, shining black, above and below 

 with a golden yellow lock of hair. 13.5 mm. 



Distribution : Ethiopian. Hynirhynchus zebra Lind- 

 ner (1955 ) . From East Africa. 



Genus Chilesus Bromley 



FiGTTBES 210, 755, 1404, 1413, 2194, 2298, 2438 



Chilesus Bromley, Diptera of Patagonia and South Chile ... In 

 the British Museum (Natural History), pt. 5, p. 272. 1932. 

 Type of genus : Chilesus geminatus Bromley, 1932, by orig- 

 inal designation. 



Large flies with elongate, tapered abdomen, the face 

 nearly straight in profile and only slightly produced 

 below. The face lacks pile on the upper part and has 

 2 or 3 rows of stout bristles above the epistomal margin. 

 The hind femur is slender, slightly elongate and the an- 

 tenna characteristic in the presence of two rather short 

 microsegments with the style absent, imless the second 

 microsegment which carries an apical spine be regarded 

 as a style. Length 25 to 30 mm. 



Head, lateral aspect : The face is slightly produced 

 on the lower half; it begins to rise gently near the 



