HTBOS. 337 



some smaller marginal bristles. Abdomen subcylindrical. slightly 

 curved, slightly pubescent, of eight segments, the eighth often 

 more or less hidden, the 2nd longest dorsally ; genitalia asym- 

 metrical ; ovipositor terminating in two small styliform lamella?. 

 Legs of moderate length, hind pair rather longer ; hind femora 

 slightly thickened and with rows of spines below ; anterior tibia? 

 generally with apical spurs. Legs considerably pubescent, the 

 male in some species with long characteristic hairs on anterior 

 tibiae and tarsi. Empodium small, narrow, ending iu a long 

 bristle. Wings well developed, comparatively broad ; axillary 

 lobe distinct ; 3rd vein simple ; upper branch of 4th vein simple ; 

 discal cell present ; anal cell longer than 2nd basal cell, its 

 posterior angle acute ; anal vein weak, attaining margin of wing ■ 

 stigma normally present. 



Mange. Europe, Asia, the Orient, Egypt, Natal, North and 

 South America, Australia. 



Life-history un kn own . 



The perfect insects inhabit low bushes and ground -plants in 

 humid and shady situations. 



Table of Species. 



1. Legs partly or wholly distinctly yellow 



or brownish yellow 2. 



Legs wholly black or dark brown ; no 



definite yellow parts 5. 



2. Legs wholly pale yellow 3. 



Legs not wholly yellow 4. 



8. Venter yellowish; scutellum black; a 

 greyish depression laterally in front 



of scutellum bisetosus, Bezzi, p. 338. 



Venter black ; scutellum brownish yel- 

 low ; no greyish depression tenuipes, Brun.,* p. 338. 



4. Stigma absent ; anterior tibiae, hind 



knees broadly and all tarsi, yellow . . gagatinus, Big., p. 339. 

 Stigma present o. 



5. Middle tibia?, tips of middle femora, and 



most of middle tarsi yellow ; length 



3^ mm apicis, Brun., p. 340. 



Fore tibia?, tips of hind femora, and base 



of hind tibia? yellow ; length 2^ mm. . geniculates, Wulp, p. 340. 

 H. Larger species, at least 5 mm. long .... 7. 

 Smaller species, 2 to 3| mm. long .... 8. 

 7. Thorax shining blackish, with two in- 

 distinct dorsal stripes ; wings nearly 

 clear ; hind tarsi without golden- 

 yellow pubescence below niger, Brun., p. 340. 



Thorax blackish grey, unstriped ; wings 

 pale brownish grey; hind tarsi with 

 conspicuous golden-yellow pubescence 

 below awipes, Brun., p. 341. 



* May be s3'nonymous with bisetosus, Bezzi, the distinguishing characters 

 being conceivably within the variation of a single species. 



z 



