1913] M dander — A Synopsis of the Sapromyzidae 77 



Genus Chaetocoelia Giglio-Tos. 



1. Wings brown except most of second posterior cell and the anal angle which are 



hyaline, brown of center of -wing without clear spots; face not or but feebly 



maculate; thorax brown punctate. Mex palans Giglio-Tos. 



Brown of center of wings with clear spots; face with two evident black spots .... 2 



2. The larger part of the second posterior cell and of the anal angle brown, disc of 



wings with three clear spots, two on fourth vein and one on posterior cross-vein. 



Mex., S. Am. (fig. 3) distinctissima Schiner. 



The larger part of the second posterior cell and of the anal angle hyaline 3 



3. The brown area of the wings between the second and fifth veins with many irreg- 



ular clear spots; abdominal segments not margined with setigerous black 



spots. Mex caloptera Hendel 



Wings with two small round clear spots near tip of third vein and another above 

 posterior cross-vein, near which spots the brown is more intensive, discal cell 

 largely hyaline. W. Ind angustipennis Williston. 



Genus Griphoneura Schiner. 



Blackish, shining, thorax not vittate; antennae yellowish, arista plumose; face 

 white-pruinose; legs black, the tibiae and tarsi brownish; wings yellowish with 

 the apical third brown, more intensive in front. 5 mm. Mex., S. Am. (fig. 5.) 

 imbuta Wiedemann. 



Genus Procrita Hendel. 



Shining yellow, abdomen black; costal half of wing brown, sharply extending in 

 several places into the hyaline portion. Mex. (fig. 4) pectinata Hendel. 



Entirely shining yellow, the small ocellar triangle and the tip of the antennae 

 alone black; brown of wings including the costal portion, ends of the veins, 

 and the hind cross- vein. Costa Rica sigma Hendel. 



Genus Trigonometopus Macquart. 



1. Wings hyaline, cross-veins bordered with brown, third vein with two brown 



. spots; yellow, mesonotum quadrivittate and scutellum brown. Col. 



punctipennis Coquillett. 



No round wing-spots 2 



2. Costal margin narrowly brown, cross veins slightly clouded; reddish, mesonotun 



darker laterally. W. Ind. (fig. 8) rotundicornis Williston. 



Wings with vitta including third and fourth veins and a cloud at end of second 

 vein; yellow, thorax quadrivittate with brown, scutellum brown except a 

 median line. Ga vittatus Loew. 



Genus Physogenia Macquart. 



1. With sub-alar round velvet-black spot 2 



Without such mark on pleurae; testaceous, thorax obscurely brown-vittate. 

 Cal planiscuta Thomson. 



