À Monograph o/ Ëgyplian Diplera. 95 



15. EUARESTA, Loew. 



Lw., Monogr. Dipt. N. Amer. III. 296 (1873). 



Allied to TepJirith and T njpaneu but distiuguished froiii them 

 and from other gênera, by the blaek pattern on the wings which 

 covers more than half the surface, radiating at the apex and leaving 

 the basai third of the wing entirely hyaline. 



Head somewhat broader than high; eyes rounded; eheeks nar- 

 row; epistoma slightly prominent; proboscis very short; antennae 

 {)laced below the middle of the eyes, with the third joint a little 

 longer than broad and not pointed at the tip; arista usually bare; 

 oc. well developed; .'^.or.2, the upper white and the lower black, 

 i.ov. 3 or 4; fct. white, parallel; et. white; oei). very well deve- 

 loped, white; genal bristle well developed. 



Thorax with a complets chaetotaxy and always possessing a 

 grey pulverulence and yellow pubescence; scutellum flat on the dise, 

 with 2 6.Nr., but often the 2 a.u-. are also présent. 



Abdomen fairly broad, almost without bristles; ovipositor not 

 long, flattened and conical. 



Legs fairly short but strong; front femora with a row of bristles 

 beneath; middle tibiae with a single spur. 



Wings rounded elliptical, with more than half the entire surface 

 black, the black pattern being on the apical two thirds of the wing, 

 with only a few hyaline spots, and developing distinct rays at the 

 apex; costal bristle small, double; RI not reaching the radio-median 

 cross-vein; R2 + 3, R4 + 5 and Ml not parallel; R4 + 5 bare; cross- 

 veins parallel and perpendicular, fairly approximated ; inferior 

 angle of Cu cell ending in an extremely short and broad point, shorter 

 than the M cell. 



TYPE : Tnjpeta festîra Loew (1873). 



This genus was erected by Loew for several species of Trypeta, 

 in which the pattern of the wings forms distinctly developed rays at 

 the apex, Hendel, however, and later Bezzi, hâve used it in a some- 

 what v/ider sensé. As the characters shown in our fairly typical 

 Egyptian species rphionae, mihi, agrées with Loew's interprétation 

 of Eiiresta, I hâve provisionally placed it in this artificial genus. 

 AU the species of this genus pass their larval stage in tlie twigs of 



