LAPHEJINAE 



ROBBER FLIES OF THE WORLD 



383 



ized; tegula pubescent only; squama with a scattered 

 fringe in 2 rows. Prosternum broad laterally; not 

 dissociated. 



Legs : The femora are stout without being especially 

 thickened. The hind femur is slightly dilated pos- 

 teriorly ; it bears scanty, long, fine, appressed pile dor- 

 sally and laterally and an equally scanty, ventral fringe 

 of erect to suberect pile; it bears a pair of subapical, 

 dorsal bristles with an additional element dorsomedi- 

 ally and sometimes with a much weaker element dor- 

 sally a short distance back. Lateral bristles absent; 

 ventrolateral margin with at least 1 stout, moderately 

 long bristle located at the outer third, a few loig 

 hairs ventrally at the base and a partly doubled ventro- 

 medial fringe, of some 15 to 18 long, erect, slender, 

 bristly hairs. The hind tibia bears 4 dorsolateral and 

 4 lateral stout bristles and 3 or 4 weak dorsal bristles. 

 Ventrally is a dense fringe of erect, long pile beginning 

 at the base and replaced by appressed setae only at the 

 extreme apes. Apex with 1 dorsal, 1 dorsolateral, 2 

 lateral, 3 medial, and 4 ventral bristles. Middle femur 

 with a dorsal subapical bristle and a dorsal basal 

 bristle and with 2 stout, anterior bristles, 1 at basal 

 and 1 at outer third; this tibia bears stout, oblique 

 bristles, 2 extremely long, anterodorsal, 3 long postero- 

 ventral and shorter, weaker bristles, 2 or 3 dorsal, 6 

 or 7 posterior; in addition there is a single long, stout, 

 ventral bristle at the outer fourth. Apex with 12 

 bristles. Anterior femur with 3 long, dorsal bristles 

 but with only fine, long hairs ventrally; their tibia 

 bears 5 to 7 dorsal, 3 long posteroventral, and 3 short, 

 weak posterior bristles. Tarsi end in long, fuzzy 

 pulvilli, a long, stout, tapered empodium, and strongly 

 arched, sharp claws. 



Wings: The marginal cell closed with a long stalk. 

 First posterior cell narrowed, fourth posterior cell 

 closed with a short stalk; anal cell closed. Second 

 basal cell ends in 3 veins, the middle vein short; the 

 vein closing the fourth posterior cell slightly arched, 

 not quite in line with the closing vein of the discal cell. 

 Alula large ; ambient vein ends with the second posterior 

 cell. 



Abdomen: The abdomen coarsely punctate; at the 

 base as wide as the mesonotum but slightly more nar- 

 rowed beyond and the abdomen with nearly parallel 

 sides. Pile of abdomen abundant but short, stiff, ap- 

 pressed and setate, longer and finer along the lateral 

 margins. Sternites with scattered, fine hairs. Stout 

 bristles present on all tergites; first tergite with 4 or 

 5, second with 2, remaining tergites with 1 bristle placed 

 in the middle laterally. The last tergite may bear 3 

 or 4 bristles. There are seven tergites present in the 

 male, the seventh very narrowly exposed below the 

 cuplike rim of the sixth. Female with six tergites, the 

 seventh completely concealed. Male terminalia com- 

 pletely hidden and recessed within the cuplike apex of 

 the abdomen and exposed to view only ventrally ; dor- 

 sal processes divided. Female terminalia form a short 

 and minute, projecting process which is concealed be- 



535914— 62— pt. 1 26 



neath the last tergite. In neither sex is the abdomen 

 as strongly cupped as in Atomosla Macquart. 



Distribution: Neotropical: Aphestia annulipes Mac- 

 quart (1838) [=bra8Uiensia Schiner (1866)] ; calceata 

 Schiner (1867); mexicana Williston (1901); nigra 

 Bigot (1878). 



Australian: Aphestia chalybaea Boeder (1881). 



Genus Cyanonedys Hermann 



Figures 280, 646, 1312, 1321, 1600, 1601, 2103, 2163, 2164 



Cyanonedys Hermann, Nova Acta Acad. Caes. Leop.-Carol., 

 vol. 96, p. 128, 1912. Type of genus: Cyanonedys leucura 

 Hermann, 1912, by original designation. 



Large and robust flies without punctured surface. 

 Stout bristles are present on the lower face and aub- 

 epistomal margin and usually the upper face. The 

 outer fourth of the third antennal segment has an ex- 

 cision and is attenuate towards the apex. Proboscis 

 short and truncate. Male terminalia not wholly con- 

 cealed. The end veins of the discal and first posterior 

 cells are aligned. Ricardo (1912) described several of 

 the Hermann species of Cyanonedys under the genus 

 Clariola Kertesz. Length 12 to 22 mm. 



Head, lateral aspect : The head is long, the face con- 

 spicuous without being produced. The occiput is mod- 

 erately developed and retreating above and below; it 

 bears dense pile and bristles, confined to the dorsal 

 third, which may be quite weak or strong and always 

 set far from the eye margin. The proboscis is robust, 

 ventrobasally swollen, with truncate apex bearing a 

 distally directed circlet of numerous, long, bristly hairs ; 

 base with numerous, long, bristly hairs below. Palpus 

 minute, the basal segment small and more or less fused ; 

 the second segment is cylindrical, with numerous hairs 

 apically. The antenna is attached at the upper third 

 of the head, elongate, comparatively slender, and longer 

 than the head ; the first segment is slightly longer than 

 the second. Both segments have abundant, bristly 

 pile below and the first has 1 or 2 stout, long, bristles 

 ventrally ; the second segment bears 2 or 3 long, some- 

 times partly stout bristles dorsally near the apex. The 

 third segment is of uniform width to the outer fourth 

 where there is a small incision with a spine and beyond 

 this point the antenna is attenuate to a blunt point, 



Head, anterior aspect: The head is less wide than 

 the thorax; the face is wide and about a fourth the 

 head width, with nearly parallel sides; it is densely 

 pubescent with long, bristly pile and slender or stout 

 bristles, usually densely beset and especially stout ven- 

 trally. The front is slightly divergent, the vertex 

 equally convergent; the front is short and pollinose, 

 with a deep, V-shaped lateral groove; the vertex is 

 deeply excavated, with slanting sides and a high prom- 

 inent ocellarium having vertical sides on the upper half 

 and bearing 1 to 3 pairs of bristles between the ocelli, 

 besides some postocellar setae. 



Thorax: The mesonotum is shining, apilose except 

 below the supraalar and postalar bristles. The pile is 



