Synopsis. Closely resembles A. nigrella ; frons 
distinctly brownish centrally; 2 ors, 3 ori; 3d 
antennal segment longer than broad, rounded at end 
(Malloch, 1915c: fig. 4); mesonotum with 3 strong 
postsutural dc , normally 2 smaller ones in pre- 
sutural area; wing length from 2.5 mm in male to 
3.1 mm in female, last and penultimate sections of 
M 3+4 equal; male genitalia with aedeagus (figs. 
385, 386) weakly pigmented, distiphallus relative- 
ly short (contrast A. nigrella , figs. 382, 383). 
Host/Early Stages. Unknown, certainly Poaceae. 
Distribution. Illinois, New Hampshire; widespread 
in Canada. 
References. Malloch, 1915c: 359; Spencer, 1969a: 
36; part 2, p. 262. 
18 (9). Very large species, wing- length 3.25-4.1 mm 
A. kincaidi Malloch 
( Squama 1 fringe normally pale, couplet 15) 
Smaller species, wing length up to 2.4 mm 
A. pudica Spencer, n. sp. 
(Costa normally clearly extending to vein M 1+2, 
couplet 32). 
19 (8). Squamal fringe pale, whitish or ochreous 20 
Squamal fringe dark, brown or black 31 
20 (19). Legs and all antennal segments entirely black 
A. albipennis Meigen 
Synopsis. Frons dark brown or sooty black, at 
least slightly projecting above eye in profile; 
all antennal segments black, 3d enlarged, rounded 
below (fig. 387); mesonotum normally somewhat 
matt, though more shining black from rear, with 
up to 7 differentiated dc , 1-4 strong presutural 
ones sometimes little differentiated from acr; 
legs normally entirely black, forefemur at most 
with knee slightly paler; wing length from 2 to 3 
mm, last section of M 3+4 about 0.67 penultimate; 
squama and fringe white; male genitalia with ae- 
deagus as in figures 388, 389. 
Host/Early Stages. Poaceae, recorded in America 
only from Triticum aestivum ; in Europe, known on 
hosts in tribes Agrosteae, Aveneae, Festuceae, 
Hordeae, Panicaeae, and Phalarideae occurring most 
frequently on Phalaris arundinacea , common also on 
Hordeum and Poa . The larva forms upper surface 
mine, which develops into broad blotch; pupation 
takes place either in leaf or externally, with 
puparium then loosely glued to leaf; puparium 
reddish, brown, or black, with posterior spiracles 
closely adjoining, each with 3 bulbs (fig. 390). 
Distribution. California, Illinois, Iowa, Massa- 
chusetts, Michigan, New York, Ohio (as A. nigripes 
sensu Frick, 1959); Colorado (new record), doubt- 
lessly present in many other States; Canada, Europe. 
References. Spencer, 1969a: 32; 1981: 105; part 2, 
p. 262. 
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