1913] Mdander — A Synopsis of the Sapromyzidae 73 



Minettia annulata sp. now 



cf and 9 • Length 3 mm. Very close to quadrilineata Lw., in size, structure, 

 chsetotaxy, color, and variations in color, but distinguishable by its different sexual 

 structures, the setulse of the front femora, and the maculation of the abdomen. 



Ground color mostly blackish, although sometimes quite testaceous, overlaid 

 on head and thorax with dense cinereous pollen. Front large, a little broader than 

 long, with two well-defined darker vittse extending from the antennae to the level 

 of the posterior ocelli, elsewhere cinereous; ocellar bristles of moderate length and 

 well separated from each other; face cinereous-white, the ground color beneath the 

 antennae sometimes more or less blackish, along the orbits whitish; below the eyes 

 the cheeks are marked with a large darker spot. Antennae yellowish, the third 

 joint ovate; arista short-pubescent. Palpi black. Mesonotum blackish to testa- 

 ceous, with alternating stripes, five cinereous and four fuscous, with four strong 

 dorsocentral bristles, of which one is presutural, with but two definite rows of minute 

 acrostichals, one intraalar; mesopleurse with scattered short hairs; two sterno- 

 pleural bristles: scutellum rather flat, cinereous except for the continuation on its 

 disc of the median fuscous vittse of the notum. Abdomen subshining, brownish 

 to yellow, with numerous small brownish mottlings, most distinct at the bases of 

 the submarginal rows of bristles, the mottlings toward the base of the segments 

 sometimes confluent to form vague resemblances to the maculations of quadri- 

 lineata; hind margins of segments paler; marginal bristles nearly as long as the 

 segments; hypopygium narrowly and deeply cleft, the two sides of the emargination 

 sharply projecting ventrally as a pair of finger-like processes, ventrally at the base 

 of the hypopygium there is another pair of black acuminate recurved processes. 

 Femora brown to yellow but the underside of each with a well-defined dark spot 

 near the distal third, the spot of the front pair provided in both sexes with a row of 

 about ten microscopic close-set black teeth along the inner edge: tibia? with basal 

 dark ring opposite the femoral mark; tarsi dull yellowish. Halteres whitish. 

 Wings uniformly subhyaline, the last two sections of the fourth vein proportioned 

 three to five. 



Nine specimens are before me from East Eddington, Maine 

 (Hough), Price County, Wisconsin (C. F. Baker), Knoxville, 

 Tennessee (Aldrich collection), and Mount Constitution, Washing- 

 ton, July 3, 1908. 



Loew's species quadrilineata, well represented in Professor 

 Aldrich's collection from Pennsylvania, Michigan, Tennessee, 

 and Wisconsin, differs as follows: The stouter hypopygium is 

 broadly emarginate, the finger-like prolongations of the sides of 

 the excision dark in color and the basal pair of black acuminate 

 processes straight and approximate. Unless the hypopygium is 

 open these structures are not to be seen. The femora usually 

 lack the distal black spot and always are devoid of the row of 



