1913] Melander — A Synopsis of the Sapromyzidae 67 



Abdomen not furnished with spines; entire insect yellow; ocellar bristles sepa- 

 rated more than the width of the front ocellus; d^ lamellae long and linear 

 Mex., N. J., B. C.*; Cal. Aldrich Sapromyza innuba Giglio-Tos. 



51. Mesonotum vittate; face maculate 52 



Mesonotum not vittate; face not spotted 54 



52. Mesonotum opaque yellow and with four vittte; posterior tibite with basal 



ring; fifth vein not brown 53 



Mesonotum brown and bivittate, pleurae bivittate; tibiae more or less brown 

 but not ringed; fifth vein brown; face with two oral spots; abdomen testaceous; 

 the last two segments with median vitta. S. Am., Mex. 

 Sapromyza geminata Fabricius. 



53. Face with a median oral spot; pleurae bivittate; abdomen with three rows of 



brown spots; arista short plumose. W. Ind. . .Minettia octovittata Williston. 

 Face with black antennal spots and with a pair of dusky oral spots; pleurae 

 obsoletely maculate; abdomen reddish; arista short-pubescent; oral hairs 

 more prominent than usual, the foremost almost bristle-like. Mass., D. C, 

 N. J., Va., Fla., La.* Sapromyza umbrosa Loew. 



54. Scutellum with two black spots on margin; arista bare; abdomen with darkened 



incisures and median vitta. Mex., S. Am Sapromyza bipunctata Say, 



Scutellum unicolorous; arista pubescent to plumose; abdomen yellow to brown 

 but not marked 55 



55. Brown of costal margin arising over posterior cross-vein and confluent with 



cloud on this cross-vein; cf lamellae large, black-hairy; second joint of hind 

 tarsi black, in cf broad; arista short-pubescent. Que., Ont., Me., N. H., 

 N. J., Pacific Coast; Mass.*, Pa.*, 111.*, Tex.* (Mich., Wis., Tenn., S. Dak. 



Aldrich) Sapromyza compedita Loew. 



Brown of costal margin arising near base of wing and usually separate from 

 cloud on posterior cross vein; second joint of hind tarsi rarely differentiated 

 from the others 56 



56. Brown of costal margin including the anterior cross-vein 57 



Brown of costal margin separate from anterior cross- vein 59 



57. Brown of costal margin in addition to apical cloud extending backward as three 



broad blunt projections, the first including the anterior cross-vein, the other 

 two not passing the third vein; arista plumose; abdomen brown. Brazil, 



Mex Sapromyza contigua Fabricius. 



Brown of costal margin with two rather slender projections in front of cross- 

 veins in addition to the apical cloud; arista short-plumose; abdomen 

 reddish 58 



58. Costa broadly brown; second joint of hind tarsi not differentiated. N. Y. 



Sapromyza sheldoni Cociuillett. 



Brown of costa quite narrow at end of second vein; second joint of hind tarsi 



black, in cf somewhat widened. Mass.* Sapromyza houghii Coquillett. 



59. Brown of costa stopping at fourth vein. S. Am., Mex. 



Sapromyza latelimbata Macquart. 



Brown of costa extending beyond fourth vein at apex of wing 60 



