79 



A NEW FLY OF THE GENUS AQROMYZA FROM EGYPT. 

 By JAMES E. COLLIN. 

 Agromyza salicifolii, sp. n. 



Belonging to the reptans groiip ; thorax dark dove-grey with a faint greenish tinge; 

 abdomen dark green, shining ; legs entirely Mack; luings hyaline, iridescent, loithpale 

 veins, squama ichitish with white fringes, halteres pale yellow with a darkened stem. 



(S ■ Head in profile deeper than wide, f rons not produced, eyes large, jowls at 

 the lower angle of eye about equal in width to the length of third antennal joint, 

 face and frons of a similar colour to thorax, frons longer than wide, sides 

 parallel until opposite the antennre where they slightly converge, sides of the face 

 gradually diverging ; face concave, with practically no keel or furrow, frontal 

 lunule small, as in reptans ; antennre small, dull black, arista practically bare, palpi 

 black, proboscis yellowish and yellow-haired, chaetotaxy of head as in reptans, 

 but only four pairs of orbital bristles, the lowest pair converging, the minute hairs 

 on ocellar triangle and along the eye-margins very inconspicuous. Thorax and 

 pleurte dark dove-grey with a faint greenish tinge, hardly shining, chaetotaxy as 

 in reptans, bvit only two pairs of dorso-central bristles, the front one well developed 

 and about in a line with the front supra-alar bristle ; in addition to the usual 

 strong sternopleural bristle, one or two bristles in front of it are fairly well 

 developed. Abdomen shining dark green, ovate, flattened, rather pointed in both 

 sexes, evenly clothed with short black bristles which are rather longer on the 

 hind margins of the segments. Legs entirely dull black, femora with blunt apical 

 ends, front femora with a i-ow of bristles behind, mid femora with a bristle 

 behind at the tip, middle tibiae with two bristles behind on the middle third. 

 Wings (fig. 1) ample, hyaline, and iridescent, appearing whitish in some lights, 



""'""^'r,nr,n-.,,,rn)nr'n-n>'*'' 

 Fig. 1. — Wing oi Agromyza saUcifolU, (^ . x 30. 



all the veins yellowish especially towards the base of wing, the penultimate 

 section of postical vein longer than the last section, anal angle and alula well 

 developed. Squamae white with yellowish margins and short white fringes. 

 Halteres with pale yellow knobs and brownish stems. 



