580 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 113 
Amoebaleria sackeni Garrett 
FicureE 75 
Amoebaleria sackeni Garrett, 1925a, p. 3—Czerny, 1930, p. 448. 
I am not able to distinguish from each other the females of 
Amoebaleria defessa (Osten-Sacken) and A. sackeni Garrett. The 
males can be distinguished from each other only by the structure of 
the terminalia. In A. defessa (Osten-Sacken) the surstylus is straight 
and fingerlike in the distal portion, whereas A. sackeni Garrett has 
a distinct downward bend at the tip of this structure. The epiphallic 
process of A. sackeni Garrett widens more abruptly at the base than 
does that of A. defessa (Osten-Sacken). 
DistriputTion.—lIowa, Minnesota, Wisconsin, Illinois, Missouri, 
Indiana, Ohio, Kentucky, Tennessee, West Virginia, Pennsylvania, 
New York, Ontario, Quebec; collections have been made throughout 
the year. 
Brotogy.—See ‘A. defessa (Osten-Sacken)” above. 
Amoebaleria flavotestacea (Zetterstedt) 
FIGcureE 76 
Helomyza flavotestacea Zetterstedt, 1838, p. 765. 
Helomyza longiseta Zetterstedt, 1847, p. 2445 (part). 
Dryomyza convergens Walker, 1849, p. 983 (part). 
Blepharoptera biseta Loew, 1859, p. 62. 
Leria longiseta (Zetterstedt), Schiner, 1864, p. 31. 
Eccoptomera flavotestacea (Zetterstedt), Strobl, 1893, p. 83. 
Leria biseta (Loew), Aldrich and Darlington, 1908, p. 81. 
Chaetomus flavotestaceus (Zetterstedt), Czerny, 1924, p. 128; 1927a, p. 39.— 
Collin, 1943, p. 246. 
The presence of two strong sternopleural bristles and the yellowish- 
orange color of the entire body will distinguish this species from others 
in the genus. 
MALE AND FEMALE.—Head yellow to yellowish orange, darker on 
front; aristae dark brown; anterior fronto-orbital bristle one-half or 
less the height of the posterior bristle; oral vibrissae strong, a single 
irregular row of buccal setae, which may sometimes appear as 2 
irregular rows. 
Thorax yellow to yellowish orange, darker on mesonotum, with 
sometimes a dark vitta through each row of dorsocentrals; meso- 
pleuron bare except for occasional setae in anterior corner; sterno- 
pleuron with 2 strong bristles in upper hind portion, with sparse 
setae anterior to the bristles and longer hairs between the coxae; 
legs yellow to yellowish orange, sometimes darker distally; hind femur 
usually with 2 bristles near distal end on anterodorsal side; wings 
