on Agropyron , Agrostis , Festuca, Holcus , Phleum, 
and Poa . Several larvae normally feed together, pu- 
pating in mine; puparium shining black, resembling 
that of C. incisa (see fig. 564). 
Distribution. New York (new record); Canada, Europe. 
References. Spencer, 1969a: 133; part 2, p. 279. 
Squamal fringe pale, yellowish 
C. (P. ) incisa (Meigen) 
Synopsis. Agreeing closely with C . pygmaea , in- 
cluding black femora with only forefemora distally 
yellow, but differing in pale squamal fringe; wing 
length 2. 1-2.8 mm, last section of M 3+4 about twice 
length of penultimate; male genitalia with aedeagus 
(fig. 563) having curvature of distiphallus general- 
ly somewhat flat, distal tubules sometimes slightly 
rotated to right (but not conspicuously so, as in C. 
(P. ) muscina , fig. 559). 
Host/Early Stages. Many genera of Poaceae, including 
in United States Agropyron repens , Bromus tectorum , 
Elymus glaucus , Hordeum vulgare , Phalaris arundi- 
nacea , Phleum pratense , Setaria lutescens , and Tri- 
ticum aestivum (Frick, 1952a, 1959). Larva mines 
normally near apex of leaf, pupating internally, 
frequently several larvae feeding together; puparium 
blackish, posterior spiracles (fig. 564) on conspic- 
uous protuberance, each with normally 3 bulbs. 
Distribution. Widespread in northern United States 
(Frick, 1959: 381); new records: North Carolina, 
Wyoming (CNC) ; widespread in Canada, Europe; 
Pakistan. 
Reference. Spencer, 1969a: 128. 
7 (5). Tarsi yellowish U. (]?. ) macminni Spencer, n. sp. 
Synopsis. Frons not projecting above eye, 2 ors, 2 
ori; gena narrow, 3d antennal segment small, round, 
arista long; frons, all antennal segments, mesono- 
tum, and pleura black; legs with femora black but 
knees bright yellow for slightly more than femoral 
width; squama and fringe yellowish; wing length 
2. 3-2. 5 mm, last section of vein M 3+4 1.5 times 
length of penultimate; male genitalia with aedeagus 
as in figure 565. 
Host/Early Stages. Carex crus-corvi . Larvae form- 
ing large communal mine, pupating internally; pu- 
parium black, elongate at anal end, with posterior 
spiracles each having 3 bulbs, lower hooklike (fig. 
566). 
Distribution. Mississippi. 
Reference. Part 2, p. 278. 
— Tarsi dark, blackish brown 8 
8 (7). Discal cell small, last section of vein M 3+4 almost 
twice length of penultimate — U. (]?. ) pygminoides Spencer 
Synopsis. Small black species, with 3d antennal seg- 
ment slightly angulate; all knees bright yellow, 
tarsi dark; wing length in male 1.75 mm, discal cell 
small, last section of vein M 3+4 almost twice 
length of penultimate; male genitalia with aedeagus 
as in figure 567. 
95 
