DASYPOGONINAE 



ROBBER FLIES OF THE WORLD 



217 



Anterior femur with 2 bristles anteriorly at apex, 2 

 posteriorly at the outer third, and 6 to 8 sharp, fine, 

 ventral bristles. Tibial complement similar to that of 

 the middle tibia, the ventral bristles lacking. Apex 

 without spine. All the tarsi end in long, spatulate pul- 

 villi with marginal fringe, basally stout empodium, and 

 sharp claws. 



Wings : The marginal cell is widely open. The an- 

 terior branch of third vein ends close to the apex or 

 just above; the second posterior cell begins close to the 

 end of the discal cell. All posterior cells open, the 

 fourth somewhat narrowed ; anal cell open, second basal 

 cell ends in 3 veins, middle vein short ; the alula is large, 

 the ambient vein complete. 



Abdomen: The abdomen is robust, strongly convex 

 and subcylindrical. The first tergite is somewhat swol- 

 len laterally. Abdomen nearly or quite as long as the 

 wings. Pile of abdomen abundant, fine and suberect, 

 with patches of stiff setae posteriorly and sublaterally 

 on second and fifth tergites only. Only the first ter- 

 gite has bristles and these are extremely numerous, 

 long and relatively slender and mixed with additional, 

 stiff pile. The sternites bear long, erect, stiff pile. 

 Males and females with eight tergites. In the male the 

 epandrium is cleft nearly or quite up to the base, with 

 a distinct gap between the apposed halves. Gonopod 

 well developed but not as long as the superior forceps. 

 Hypandrium only moderately long, leaving the cavity 

 of the terminalia widely open much as in Scylaticus 

 Loew or Bathypogon Loew. The acanthophorites have 

 about 7 pairs of spoonlike spines ; the lateral processes 

 bear weak, spinous bristles below. Last sternite un- 

 divided and with very short, posterior, upturned flap. 



Distribution : Palaearctic : Aneylorrhynchus argyro- 

 gaster Seguy (1932); bicolor Becker in Becker and 

 Stein (1913); brussensis Schiner (1867); cingulatus 

 Bondani (1845) ; eTbaiensis Efflatoun (1937) ; farinosus 

 Becker in Becker and Stein (1913) ; glaucius Rossi 

 ( 1790) [ = pictus Wiedemann (1821 ) , variegatus Pallas 

 in Wiedemann (1818)]; gammigutta Becker (1906); 

 limbatus Fabricius (1794) [=laufferi Strobl (1906)]; 

 longicomis Schiner (1867) ; ru,focinctus Seguy (1930) ; 

 senex Dufour (1833); tristk Seguy (1932); vultur 

 Seguy (1930). 



Ethiopian : Aneylorrhynchus a pic alls Curran 

 (1934) ; braunsi Bromley (1936) ; cruciger Loew 

 (1858); crux Bezzi (1908); fortipes Walker (1857); 

 fulvicollis Bigot (1878) ; funebris Bromley (1936) ; 

 humeralis Wiedemami (1821) ; hyaeiformis Speiser 

 (1910); insignis Bromley (1936); maculatus Bigot 

 (1878) ; magniftcus Bromley (1936) ; munroi Bromley 

 (1936) ; nomada Wiedemann (1828) ; nynkinensis Spei- 

 ser (1910) ; pretoriensis Bromley (1936) ; quadrimacu- 

 latus Loew (1858) ; reynaudii Macquart (1838) ; splen- 

 dens Bromley (1936) ; susurrus Karsch (1879) ; tricolor 

 Loew (1863), tricolor reynaudii Macquart (1838) ; uni- 

 fasciatus Loew (1858) ; variegatus Bigot (1878) ; zo- 

 nalis Bromley (1936). 



Oriental : Aneylorrhynchus eomplacitus W u 1 p 

 (1872) ; percheronii Macquart (1834). 



Text-Figure 13. — Pattern of distribution of the genus Plesiomma 

 Macquart. 



Australian: Aneylorrhynchus plecoides de Meijere 

 (1913); rufipes de Meijere (1913); rufithorax Dole- 

 schall (1858). 



Country unknown: Aneylorrhynchus agathyUus 

 Walker (1849). 



All three species listed under Australian are from 

 New Guinea or an island west of New Guinea. 



Genus Plesiomma Macquart 



Figures 75B, 506, 991, 1000, 1738, 1772, 1969, 2010 



Plesiomma Macquart, Dipteres exotiques, vol. 1, pt. 2, p. 54, 

 1838. Type of genus : Plesiomma testaceum Macquart, 

 1838. Designated by Back, 1909, the first of 2 species. 



Dolicliodes Macquart, Dipteres exotiques, vol. 1, pt. 2, p. 49, 

 1838. Type of genus: Dolicliodes ferntginea Macquart, 

 1838, by monotypy. 



Plesioma Schiner, Vera, zool.-bot. Ges. Wien, vol. 16, p. 702, 

 1S66, lapsus. 



Plesiomma has three subgenera: Boropis, new sub- 

 genus, Dapsilochaetus, new subgenus, Cystoprosopa, 

 new subgenus. 



Slender, elongate flies of medium to large size, which 

 will be recognized by the strongly divergent face ; very 

 wide below, it is gradually but strongly narrowed above 



