at hindcorners, acr in 4 rows; side of thorax 
largely yellow but mesopleuron black along lower 
and front margin (see Frost, 1962: fig. 1); legs 
with coxae and femora yellow, tibiae and tarsi 
brownish; wing length 1 . 8-2 mm; male genitalia 
with aedeagus as in figures 746, 747 ; surstylus 
with 2 stout bristles (fig. 748). 
Host/Early Stages. Bidens pilosa . Larva forming 
blotch mine (further details not recorded). 
Distribution. Florida. 
References. Frost, 1962; Spencer and Stegmaier, 
1973: 97. 
49 (46). Mesonotum black, shining or more matt 50 
Mesonotum distinctly gray 82 
50 (49). Mesopleuron at least 0.75 black 51 
Mesopleuron at most 0.5 black 58 
51 (50). Mesopleuron solidly black 52 
Mesopleuron at most 0.75 black 55 
52 (51). Femora bright yellow 53 
Femora darker, with some blackish striations 
“ L . baccharidis Spencer 
Synopsis. Frons and antenna yellow, hindmargin of 
eye and upper orbit black, both vt on dark ground; 
mesonotum shining black, acr in 4 rows; mesopleur- 
on almost completely black, only narrowly yellow 
along suture; legs with coxae black, femora ba- 
sically yellow but variably darkened above, tibiae 
and tarsi brownish black; wing length 1 . 9-2 mm, 
last section of vein M 3+4 twice length of pen- 
ultimate; male genitalia with aedeagus as in 
figures 749, 750. 
Host/Early Stages. Asteraceae, recorded from 
Artemisia douglasiana , Baccharis douglasii , B. 
pilularis , and Conyza canadensis . Larva forming 
dark upper linear mine that not infrequently 
starts at apex of leaf and there appears blotch- 
like (fig. 751); puparium orange. 
Distribution. California, widespread; new record: 
Washington, Yakima Co., Wapato, 2 m., 26. VI. 51 
(K. E. Frick, Lot 229 -2); Colombia, Venezuela. 
Reference. Spencer, 1981: 216. 
53 (52). Orbit predominantly black L. deceptiva (Malloch) 
Synopsis. Head (fig. 752) with frons conspicuously 
projecting above eye, dull yellow, together with 
gena, face, and palpus; orbit considerably widen- 
ing toward base of antenna, 2 ors, 3 ori, all 
long, slender; mesonotum entirely shining black; 
presutural dc little differentiated from acr, 
these irregularly in 4 rows; scutellum, notopleur- 
on, and femora conspicuously bright yellow; meso- 
pleuron entirely black; wing length in female 2.25 
mm, discal cell large, last section of M 3+4 about 
1.5 times length of penultimate, in ratio 25:17; 
male genitalia unknown. 
Host /Early Stages. Unknown. 
Distribution. Illinois, Virginia. 
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