LAPHIUIXAB 



ROBBER FLIES OF THE WORLD 



393 



antenna and more strongly divergent on the lower 

 third. On the minute, ventral protuberance the face 

 bears 2 long, delicate, black bristles, thrust straight 

 forward; situated a little lower down there are 2 more, 

 widely separated, long, pale, drooping hairs followed 

 by 2 or 3 short hairs laterally and even lower in posi- 

 tion. On the upper face there are 2 or 3 short hairs. 

 Vertex rather strongly excavated; the ocellar pro- 

 tuberance is high and steep with a pair of long, 

 divergent, stout, black bristles. Anterior eye facets 

 enlarged. 



Thorax: The mesonotum is rather high and abrupt 

 anteriorly but only gently convex dorsally. It is every- 

 where sparsely, subappressed pilose. The humerus is 

 pilose, the notopleuron has a single, long, slender bris- 

 tle ; there is 1 above the supraalar, postalar with 1 short, 

 small bristle. The scutellum has a single pair of very 

 stout, very long, and divergent bristles. Margin of 

 scutellum in addition with some long pile and prescutel- 

 lar region with rather longer, stiff pile. The pleuron 

 is thinly pollinose and there is a single, distinct, slender, 

 posterodorsal bristle on the mesopleuron. Hypopleu- 

 ron with 2 long hairs and long and short pubescence. 

 Metapleuron with a fanlike, vertical row of fine, long, 

 delicate, bristly hairs. The metastemum is strongly 

 and distinctly chitinized behind the postcoxa, forming 

 a rather long, arched structure. Lateral slopes of the 

 metanotum long pilose. Lateral metanotal slopes below 

 the scutellum pubescent and with a patch of 8 or 10 

 long, stiff hairs which include 2 distinct, stout, spinous 

 bristles. 



Legs : The hind femur is elongate and rather strongly 

 thickened on the distal half with a fringe of long 

 hairs on the ventral and medial margin ; it bears 2 or 

 3 quite long, slender hairs along the ventral margin and 

 a single, still longer bristle laterally at the outer third, 

 together with a shorter bristle towards the base. Dor- 

 sally near the apex is a pair of moderately long, weak, 

 curved bristles. Hind tibia with a ventral fringe of 

 long, abundant, erect pile and 1 extremely long, ventro- 

 medial bristle at the basal third, also 1 ventral bristle 

 at the middle and 1 near the apex, 1 ventrolateral 

 bristle at the apical third, 1 shorter bristle near the 

 middle, and laterally at the middle and the basal fourth 

 are placed 2 extremely long, stout, attenuate bristles 

 which are followed by a shorter bristle at the basal 

 eighth. Finally there are 2 dorsal bristles, 1 quite short 

 near the base and 1 very stout and long at the middle ; 

 the latter, if lying flat, would reach the apex of this 

 tibia. The apex of this tibia is without special bristles 

 but ventrally at the apex there is a patch of dense, ap- 

 pressed, flattened hairs. The hind basitarsus has a 

 single, very long, stout bristle laterally near the apex 

 and a short ventrolateral basal bristle. The medial sur- 

 face of the hind basitarsus, beginning near the middle, 

 and on all the remaining segments is gathered together 

 into a peculiar, crimped, low bladelike, linear structure. 

 This structure is also present on the other tarsi. Middle 

 femur slender, with 1 long, anterior bristle at the apical 

 fourth and 3 or 4 quite long, ventral hairs on the outer 



half; its tibia has 5 or 6 moderately long, slender hairs 

 ventrally and 2 extremely long, ventral bristles; the 

 anterior margin has 2 very long, stout bristles, near the 

 basal (bird and also just beyond the anterior bristles. 

 Apex with a pair of widely separated, dorsal bristles, 

 and 2 posterior bristles and 2 or 3 ventral bristles. 



Anterior femur with 1 very weak bristle at the dorsal 

 apical third and 3 long, weak bristles ventrally; anterior 

 tibia witli 2 only moderately long, fine, dorsal bristles 

 and 3 somewhat longer, ventral bristles. On this tibia 

 there are also anterior bristles beyond the middle; the 

 apex is simple, with only a circlet of bristles. Claws 

 sharp, rather short ; the pulvilli four-fifths as long as 

 the claw; empodium long, slender, without basal 

 swelling. 



"Wings : The marginal cell closed with a short stalk. 

 The vein closing the discal cell and the fourth pos- 

 terior cell form a straight line in one wing and are a 

 little offset in the other wing. The ambient vein ends 

 just beyond the first posterior cell; marginal villi long; 

 alula extremely slender, only a third as wide as the 

 width of the basal section of the costal cell. 



Abdomen: The abdomen is slender, subcylindrical, 

 drooping and strongly punctulate; in form it is sugges- 

 tive of Atomosia Macquart, but longer and more 

 slender, with a fanlike, vertical row of 5 rather strong, 

 pale bristles on each side of the first abdominal tergite. 

 Middle of the lateral margin of the second tergite with 

 1 or 2 rather stout, long bristles. Third tergite with a 

 more slender but distinct bristle and remaining tergites 

 without lateral bristles. Male terminalia visible in 

 profile but not prominent. 



Distribution: Australian: Clariola cyaneithorax de 

 Meijere (1913) ; luteiventris de Meijere (1913) ; pipun- 

 culoides Walker (1865) ; pulchra Kertesz (1901) ; uni- 

 color de Meijere (1913). 



Genus Anoplolhyrea de Meijere 



Figures 265, 674, 1329, 1338, 1574 



Anoplothyrca de Meijere, Tijdsehr. Ent, vol. 56, snppl., p. 56, 

 1914. Type of genus : Clariola javana de Meijere, 1911, by 

 original designation. 



Small, dark, subcylindrical flies in general similar to 

 Clariola Kertesz. The face is very narrow and the 

 vertex divergent and deeply excavated. The proboscis 

 is constricted at the base, in contrast with Clariola, and 

 the apex is obtuse; also it differs in the third antennal 

 segment, which lacks the long pubescence present in 

 Clariola. Length 10 mm. 



Head, lateral aspect : The head is quite short and as 

 wide as the thorax. The face is not visible in profile 

 except below, where there is a small, short protuber- 

 ance. Occiput with short, scanty pile below and a 

 pair of moderately long, slender, microtuberculate 

 bristles placed laterally but also rather deeply within 

 the occiput and near the middle of the head in profile. 

 The proboscis is small and short, blunt apically. Pal- 

 pus minute, the apex with 1 or 2 long bristles; 2 seg- 



