3d antennal segment with pubescence longer than 
basal width of arista (fig. 725) 
L. ptarmicae de Meijere 
Synopsis. Frons and orbit yellow; hindmargin of 
eye black, with both vt on black ground; 3d anten- 
nal segment normally slightly darkened, brownish 
(more rarely yellow), with distinct fringe of 
pubescence (fig. 725); mesonotum shining black; 
mesopleuron normally largely yellow, only black in 
lower front corner, sometimes darker; legs with 
femora either yellow or with variable brownish 
striations; wing length 1. 5-2.0 mm, last section 
of M 3+4 3 times length of penultimate; male geni- 
talia with aedeagus (figs. 726, 727) at conspicu- 
ous angle to basal sclerites, these fully de- 
veloped on both sides; epandrium angular at 
hindcorner (fig. 728, B) , surstylus narrow (fig. 
728, A). 
Host/Early Stages. Achillea spp., Ch r y s an t h emum 
spp. Larva forming narrow linear mine, puparium 
yellow. 
Distribution. California, Washington; new records: 
Colorado, Clear Creek Co., Mt. Evans, Echo Lake, 
10,600 ft, 1 f., 25. VII. 61 (C. H. Mann); Mt. 
Evans, rocky slope, 13,600 ft, 1 f., 4. VIII. 61 
(J. G. Chillcott) ; Grand Co., Fraser, 9,500 ft, 
1 m. , 7. VII. 61 (J. G. Chillcott); Mont. Co., Lane 
Co., 20 miles S. of Swan Lake, 1 m. , emerged 
11. XI. 68, host not recorded, M Biol. Note 675 M (S. 
Whitney) . 
References. Spencer, 1969a: 178 (as L. millefolii 
Hering); 1981: 258. 
39 (30). Discal cell unusually small, last section of vein 
M 3+4 times length of penultimate 
L . arnaudi Spencer 
Synopsis. Frons, orbit, face, and palpus bright 
yellow; hindmargin of eye black to base of vti; 3d 
antennal segment brownish along upper margin, yel- 
low below, 1st and 2d segments yellow; mesonotum 
brilliantly shining black; mesopleuron grayish 
black on lower half, yellow above; legs with coxae 
and femora yellow, tibiae and tarsi brownish; wing 
length in male 1.75 mm; male genitalia with aedea- 
gus as in figures 729, 730. 
Host/Early Stages. Unknown. 
Distribution. Southern California. 
Reference. Spencer, 1981: 212. 
Discal cell larger, last section of M 3+4 at most 3 
times penultimate 40 
40 (39). 3d antennal segment blackish distally 
L. lupini Spencer 
Synopsis. Frons, gena, and face orange yellow; 
hindmargin of eye black to base of vti, orbit not 
darkened; 3d antennal segment blackish on outside 
and apically; mesonotum black but somewhat matt; 
mesopleuron broadly yellow above, black on lower 
121 
