LAPHIUINAB 



ROBBER FLIES OF THE WORLD 



419 



pile. Metasternum with 1 or 2 long hairs; postmeta- 

 coxal region chitinized, without medial seam. Tegula 

 pubescent only ; squama with a fringe of pile in 1 row. 

 Presternum not dissociated. 



Legs : All the femora are slightly thickened ; the hind 

 femur is a little more slender basally and slightly more 

 swollen distally in the male. This femur in the male 

 bears 1 dorsomedial apical and 1 subapical, similar dor- 

 solateral bristles, 2 stout, lateral elements at the middle 

 and just beyond, 1 weak bristle at the basal fourth, 1 

 stout, ventrolateral at the basal third, and 1 weak bristle 

 at the basal fifth. Ventral surface with a copious 

 fringe of erect, fairly long, simple pile on the outer 

 three-fifths and toward the base with 2 quite long, stout, 

 erect, pale bristles. The hind tibia bears short setate 

 pile above like the femur and a similar long, erect, 

 dense, ventral fringe changing to setae only quite at the 

 apex ; it also bears 1 short, stout dorsolateral bristle at 

 the basal third, and at the outer third 1 extremely long, 

 stout, oblique, dorsolateral bristle which is nearly as 

 long as the combined length of the first two tarsal seg- 

 ments ; laterally are 2 stout bristles near the basal third 

 and 1 shortly beyond this point ; the subapex has 1 dor- 

 sal, 1 lateral, and 5 ventral bristles. Middle femur with 

 1 stout bristle anteriorly at the distal third, 1 weak 

 bristle at the apex on each side subdorsally. Its tibia 

 bears 2 long, strong, and 2 short, weak anterodorsal 

 bristles ; including the apex there are 3 short dorsal, 3 

 or 4 fine, posterior, and 2 long, oblique ventral bristles. 

 Anterior femur with 2 short bristles anterodorsally near 

 the apex, its tibia has 2 moderately long dorsal, 3 long, 

 basally stout, oblique posteroventral, and 2 similar ven- 

 tral bristles. The anterior apical bristles of the first 



two segments of the anterior tarsi are exceptionally 

 long and stout, nearly as long as the first three tarsal 

 segments. Tarsi end in well developed pulvilli, em- 

 podium, and sharp claws. 



Wings: The marginal cell closed with a long stalk; 

 the anterior branch of the third vein is sinuous, ending 

 well above the apex and strongly arched at the base. 

 First posterior cell widely open, the fourth posterior 

 cell closed with a long stalk ; lower end vein of discal 

 cell drawn backward and nearly as long as the upper 

 vein. Anal cell closed with a short stalk; second basal 

 cell ends with 3 veins, the middle vein short. Alula 

 short with rounded margin posteriorly; the ambient 

 vein is well developed to the end of the anal cell. 



Abdomen: The abdomen is slightly wider than the 

 mesonotum, posteriorly as wide as the thorax ; the ter- 

 gites are moderately convex, strongly punctulate where 

 the thorax is only granulate, or weakly punctuhite. 

 Pile of abdomen microscopically short, appressed and 

 setate, slightly longer and erect along the lateral mar- 

 gin. Stout tergal bristles present and conspicuous on all 

 the segments: 3 pairs on first tergite, 1 near the middle 

 of the lateral margin on second to fifth tergites, and 2 

 postmarginally on tergites 6 and 7. Seven tergites in 

 the male and the female, the seventh is more than half 

 as long as the sixth. Male terminalia moderately con- 

 spicuous, bulbous and swollen ventrally, half rotate 

 but only protruding shortly beyond the apex of the 

 seventh tergite, the parts themselves being small. 

 Female terminalia completely and deeply recessed 

 within the shallow, cuplike seventh tergite. 



Distribution: Australian: Bromotheres australis 

 Ricardo (1913) ; mlicivoraWhite (1917). 



