302 Annals Entomological Society of America [Vol. VI, 



27. Agromyza maculosa, new species. 



Male and Female: Shining black, frontal lunule silvery white 

 pollinose; legs with tibiae and tarsi sometimes brownish; halteres white 

 with black spot. 



Frons very slightly more than one-third the head width; center 

 stripe opaque; orbits glossy, differentiated from center stripe; five 

 (and occasionally six), strong orbital bristles present; frontal lunule 

 distinct, viewed from above and behind shining silvery white; antennse 

 with second joint brownish, dorsal bristle distinct; third joint of moder- 

 ate size, rounded at apex, covered with very short, brownish pubescence; 

 arista brown, distinctly swollen . and tapering at base, pubescence 

 short and close ; length of arista equal to from its base to between upper 

 two orbital bristles anterior to ocelli ; face shining in center, subopaque 

 on sides, in profile concave; the central keel rounded, not sharp, cheeks 

 rather short, twice as high posteriorly as anteriorly, marginal bristles 

 rather strong though short, slightly upcurved and continued weakly 

 beyond vibrissa; vibrissa strong, well differentiated; proboscis brownish 

 yellow; palpi black, of normal size and shape. Mesonotum with four 

 pairs of strong dorso-centrals which are slightly reduced in size from 

 posterior to anterior pairs; five or six rather irregular rows of setulse be- 

 tween the dorso-centrals, the pair of bristles between the posterior 

 dorso-centrals slightly differentiated from the discal setulas; pleurse below 

 wing base slightly yellowish; squamse of rather large size, white, fringe 

 concolorous. Abdomen rather broad, ovate; all segments with short 

 dorsal hairs, stronger on margins laterally and posteriorly, noticeably 

 longer on posterior margins of last two segments; base of ovipositor 

 barely longer than preceding segment. Legs strong, front femur 

 with distinct ventral bristles; mid tibia with the posterior two bristles 

 distinct. Wings with base slightly yellowish; first vein yellowish 

 to end; subcostal vein weak; first costal division one-half as long as 

 second; inner cross vein at below end of first vein; outer cross vein at 

 slightly beyond middle of wing, and at its own length, or slightly more, 

 from inner cross vein ; last section of fifth vein distinctly, but not 

 greatly shorter than penultimate section; veins 2 and 3 distinctly, 

 3 and 4 slightly divergent. Halteres white, outer surface of knob 

 and most of stalk blackened. 



Length, 3-4 mm. 



Type: Cat. No. 15641, U. S. N. M. 



Type locality: Jamaica, New York, October, 1896. Bred 

 from chrysanthemum leaves. Paratypes from Louisville, Ky., 

 October 27, 1898; 6 specimens bred from chrysanthemum 

 leaves No. 4064; Lafayette, Ind., October 11, 1901, (H. B. 

 Dorner), 5 specimens bred from leaves of aster; Jamaica, 

 New York, 2 specimens from same lot as type ; and one specimen 

 without data from Georgia. One specimen in C. W. John- 

 son's collection from Bermuda, West Indies. 



