LAPHIUINAE 



ROBBER FLIES OF THE WORLD 



365 



some short, bristly hairs. The second segment has 

 minute setae dorsally above and below. 



Head, anterior aspect: The face below antenna is 

 less than a third the head width and slightly diver- 

 gent below. Subepistomal area rather large, strongly 

 oblique, plane with the margins, which are rounded, 

 the whole bare and less completely concealed due to 

 the more scattered nature of the lateral, bristly pile. 

 On the face the ground cover is sparsely micropubes- 

 cent, the central elements which cover the upper face 

 are stout and bristly in character, the whole distinctly 

 appressed, especially in the middle. Front extremely 

 short, similar to Ctenota, with on the hind margin 

 opposite the antenna 3 or 4 rather stout bristles and 

 other more slender bristles; all these are also present 

 in Ctenota though perhaps less accentuated. Front, 

 vertex and ocellarium similar to Ctenota; the ocel- 

 larium bears between the ocelli, a pair of very slender, 

 long bristles, and lying outside them a pair of shorter, 

 bristly hairs, and behind them 2 similar pairs. Ante- 

 rior eye facets enlarged. 



Thorax: The thorax is similar to Ctenota.. All hu- 

 meral pile is comparatively fine; on the lateral margins 

 are 3 notopleural, 4 supraalar, 1 postsupraalar, and 

 3 postalar bristles; on the scutellum the bristles are 

 more slender and irregularly intermixed with the 

 equally long, dense, bristly pile. The lower posterior 

 margin has bristly pile only ; bristles are submarginal ; 

 nearly the whole of the disc bears fine, long, stiff pile. 

 Pleuron similar to Ctenota, the upper corner of the 

 mesopleuron with the bristles rather slender; lateral 

 slopes of the metanotum micropubescent only; tegula 

 with a fringe of long setae. 



Legs: The legs are similar to Ctenota, the claws 

 likewise quite blunt and all the tarsi short. 



Wings: The wings are hyaline, differing from 

 Ctenota only in the presence of a minute, nodular spur 

 near the base of the second submarginal cell. The 

 end vein of the discal cell is more nearly rectangular; 

 the ambient vein is weak along the axillary margin. 



Abdomen: The abdomen is similar to Ctenota; the 

 pile along the posterior margins of the segments except 

 laterally is reddish brown, extended forward in the 

 middle and rather scanty ; posteriorly it leaves on each 

 tergite long, dull, dark, obtuse triangles. Sides of the 

 first 5 tergites with 3 or 4 stout, pale bristles placed 

 in a transverse row near the middle of the segment. 

 Female terminalia similar, the ninth tergite as long 

 as the eighth, with 2 flaplike, posteroventral, blunt 

 lobes extended downward and compressed; the tentli 

 tergite is composed of two short, rounded, appressed, 

 flaplike lobes ; the ventral element is a short, protrusive 

 structure turned upward with dorsolateral, thin, 

 rounded flaps, somewhat compressed towards the 

 middle. 



Distribution: Palaearctic: Paractenota effiatouni 

 Engel (1925). 



Genus Lamyra Loew 



Figures 221, 272, 682, 1272, 1281, 1800, 2081, 2094 



Lamyra Loew, Bemerkungen iiber die Fauiilie Asiliden, p. 10, 

 1851. Type of genus: Lamyra gulo Loew, 1851, bv original 

 designation. 



Quite large and comparatively slender flies with 

 clavate abdomen. They are also distinguished by the 

 greatly reduced pilosity, the extremely long legs and 

 the long, very stout proboscis which is directed straight 

 forward and carries a long fringe of dorsal bristles. 

 Claws blunt. Length up to 40 mm. 



Head, lateral aspect: The head is rather long. The 

 face is slightly protuberant above, gradually becoming 

 more extensive until quite prominent below where the 

 face appears as an obtuse triangle. Eyes moderately 

 recessive below. The anterior eye profde shallowly 

 convex, the eyes somewhat flattened in the middle. The 

 occiput is obliterated, beginning with the upper half, 

 but rather thick and well developed below. Pile of 

 occiput fine, long and scanty above and over the mid- 

 dle, but quite dense and tufted below; stout bristles 

 begin near the bottom of the occiput and consist of 

 about 17 on each side. The proboscis is unusually long, 

 large and robust and scarcely tapered; the apex is ob- 

 tusely rounded and bears stiff pile, the dorsal margin 

 has a close-set fringe of long, stiff, curved, anteriorly- 

 directed bristles which extend back to the basal third. 

 The face is somewhat swollen, bearing a very little short, 

 scanty pile below, and the proboscis is directed straight 

 forward and is not quite twice as long as the head. 

 Palpus of two segments, the first more or less fused 

 with the base and dorsolaterally excavated, the second 

 unusually stout, robust, and cylindrical and densely 

 covered with stiff bristles dorsally and apically. The 

 antenna is attached to the upper fifth of the head and 

 is moderately long; the first segment is nearly twice as 

 long as the second, the third is laterally compressed, 

 tapered from the middle to the base and only gently 

 tapered beyond on the ventral half. At the apex is 

 a rather large, transverse, recessed opening bearing 

 within a short, concealed spine. Pile of the first two 

 segments scanty, the first with 2 or 3 slender, stiff 

 bristles below. 



Head, anterior aspect: The face below antenna one- 

 fifth of head width and slightly divergent below. Sub- 

 epistomal area rather large, and strongly oblique, con- 

 cave and bare. Face with micropubescence only along 

 the eye margin; it bears long, coarse pile laterally and 

 has a dense band of extremely long but weak bristles, 

 sometimes of 2 colors across the middle of the lower face 

 margin. Sides of the subepistoma with a few long, 

 bristly hairs. Front extremely short, bearing at the 

 eye margin 5 or 6 stout bristles. Vertex rather deeply 

 excavated, the ocellar protuberance unusually large but 

 rounded and domelike and bearing a single pair of 

 especially stout, long, divergent bristles; there may be 

 a few short, stiff hairs behind the ocelli. Eye facets 

 slightly enlarged centrally. 



