Synopsis. Frons bright yellow, antenna normally 
similar but 3d segment sometimes darkened, brown- 
ish, on upper half; mesonotum shining black; 
mesopleuron black on lower 0.75; femora black but 
yellow at knees for distance equal to femoral 
width; wing length variable, from 1.9 to 2.5 mm in 
both sexes; male genitalia with aedeagus as in 
figures 739, 740; surstylus not separated from 
epandrium, slender, with single hair at end (fig. 
741). 
Host/Early Stages. Poaceae, recorded in California 
on Bromus , Hordeum , and Lolium . Larva forming 
whitish linear mine; puparium reddish brown. 
Distribution. California; new record: Colorado, 
Clear Creek Co., widespread at high elevations, up 
to 11,300 ft on Mt. Evans (CNC); Canada. 
References. Spencer, 1969a: 184; 1981: 271. 
45 (43). Discal cell large, last section of vein M 3+4 twice 
length of penultimate L. pulloides Spencer, n. sp. 
Synopsis. Frons yellowish orange, orbit more yel- 
low, all antennal segments yellow; mesonotum matt 
black; mesopleuron largely black; femora black in 
female, with slightly yellow knees, more yellow 
below in male; abdomen largely matt black; wing 
length 1.6 mm, last section of vein M 3+4 twice 
length of penultimate; male genitalia with aedea- 
gus distinctive as in figures 742, 743. 
Host/Early Stages. Unknown. 
Distribution. Colorado. 
Reference. Part 2, p. 292. 
Discal cell small, last section of M 3+4 slightly 
more than 3 times length of penultimate 
L. montella Spencer, n. sp. 
Synopsis. Closely resembling L. pulloides , dif- 
fering, apart from wing venation, by darker 
legs; wing length in male 1.5 mm; male genitalia 
with aedeagus as in figures 744, 745. 
Host/Early Stages. Unknown. 
Distribution. Colorado. 
Reference. Part 2, p. 290. 
46 (42). 3d antennal segment with distinct pubescence 47 
3d antennal segment with normal, short pubescence — 49 
47 (46). Both vt on yellow ground L. endiviae Hering 
(Pubescence of 3d antennal segment not exception- 
ally long, see couplet 81.) 
At least vte on black ground 48 
48 (47). Discal cell small, last section of vein M 3+4 times 
length of penultimate; both vt on dark ground 
L. ptarmicae de Meijere 
(3d antennal segment normally darkened, see 
couplet 38.) 
Discal cell larger, last section of vein M 3+4 only 
twice length of penultimate; vte on dark ground, 
vti on yellow L. archboldi Frost 
Synopsis. Frons and orbit yellow; mesonotum bril- 
liantly shining black, with large yellow patches 
123 
