References. Spencer, 1969a: 183; 1981: 260. 
2 ors 19 
19 (18). All antennal segments black 20 
At least 1st and 2d antennal segments partially 
paler 23 
20 (19). Legs entirely black 21 
Foreknee yellowish L. stachyos Spencer 
Synopsis. Frons yellow, broad, almost twice width 
of eye; gena extended at rear, at least 0.33 
height of eye; 3d antennal segment small, round; 
mesonotum black matt, though with some subshine; 
mesopleuron black apart from narrow yellow upper 
margin; abdomen entirely black; wing length 1.6- 
2.4 mm; male genitalia with aedeagus as in figures 
681, 682; sperm pump with conspicuously large black 
blade . 
Host/Early Stages. Stachys , with records on S. 
albens , S^. bul lata , and S^. r igida . Larva forming 
an irregular linear mine that may widen, appearing 
blotchlike at end (fig. 683); pupation internally, 
puparium orange, posterior spiracles each with 3 
bulbs . 
Distribution. California. 
Reference. Spencer, 1981: 276. 
21 (20). Frons strongly projecting above eye 
7 L. bellissima (Spencer) 
Synopsis. Large species, closely resembling L. 
quadrisetosa with following points of difference: 
Orbital bristles irregular, varying from 5 to 7 ; 
orbit pronounced, widening toward lunule; 4 dc, 
decreasing in size regularly, acr in 4-6 rows; 
frons brownish; wing length 2. 4-2. 7 mm; male 
genitalia with aedeagus as in figures 684, 685; 
hypandrium with slender sidearms, U-shaped; sperm 
pump with large blade, almost triangular (fig. 
686 ). 
Host/Early Stages. Unknown. 
Distribution. California; Canada. 
References. Spencer, 1969a: 196 (as Metopomyza) ; 
1981: 221. 
Frons not significantly projecting above eye 22 
22 (21). Mesonotum distinctly matt black L. n. sp. (Colo.) 
Synopsis. All antennal segments and legs black; 
frons brownish, orbit black; pleura black, humerus 
and notopleuron bright yellow; wing length 2.4 mm, 
discal cell large, last section of M 3+4 only 1.5 
times penultimate; male genitalia unknown. 
Host/Early Stages. Unknown. 
Distribution. Colorado. 
Reference. Part 2, p. 297. 
Mesonotum shining black L. baptisiae (Frost) 
Synopsis. Color of frons and orbit variable, 
ranging from entirely yellow to brownish black, 
orbit normally distinctly black but legs frequent- 
ly entirely yellow; 2 ors, 2 ori; mesonotum deep 
black; humerus and notopleuron yellow, pleura 
115 
