Massachusetts, Michigan, New Jersey, New York; new 
records: Minnesota, Minneapolis, Minnehaha Creek, 
leaf mines on Impatiens capensis , 28. VIII. 76 (KAS); 
Wisconsin, Dane Co. , Madison, leaf mines on 
Impatiens capensis , 2. IX. 76 (S. Tavormina); Europe 
(as Liriomyza impatientis Bri.). 
References. Spencer, 1969a: 178 (as Liriomyza ) ; 
Tschirnhaus, 1971: 562 (transfer to Phytoliriomyza ) . 
16 (12). Costal area between costa and vein R 2+3 at least 
faintly infuscated (see Frick, 1959: fig. 108) 
\P. fumicosta (Mai loch ) 
Synopsis. Frons and palpus yellow; 2 ors, 1 ori, 
orbital setulae virtually lacking; mesonotum 
variable, either distinctly banded gray and yel- 
low, or largely gray but always broadly yellow 
adjoining scutellum, 3+1 dc, acr in 2 rows; scu- 
tellum yellowish gray; pleura and legs largely 
yellow; squama yellowish, margin dark, fringe pale; 
wing length 1.5-1. 9 mm; male genitalia with aedea- 
gus as in figures 1000, 1001; epandrium (fig. 
1002) with conspicuously strong bristles on inner 
margin. 
Host/Early Stages. Unknown. 
Distribution. Illinois, Kansas. 
References. Malloch, 1914b: 310; Frick, 1959: 405; 
part 2, p. 304. 
No darkening of costal area 17 
17 (16). Mesonotum banded, broadly yellow adjoining scutel- 
lum P. dorsata (Siebke) 
Synopsis. Head yellow, including entire hindmargin 
of eye; 1st and 2d antennal segments yellow, 3d 
completely black; orbital setulae minute, sparse, 
mostly upright or incurved; mesonotum (fig. 1003) 
with pale gray bands, yellow adjoining scutellum, 
3+1 dc, acr in 2 rows; pleura largely yellow; 
wing length 1.8-2 mm, last section of M 3+4 
slightly less than twice length of penultimate; 
male genitalia with aedeagus (fig. 1004) ending in 
distinctive, symmetrical tubules; epandrium (fig. 
1005) with comb of strong bristles and shorter 
ones scattered along inner margin, surstylus with 
2 strong spines. 
Host/Early Stages. Unknown. 
Distribution. (?) Illinois, (?) Indiana, Maryland; 
new records: Louisiana, Michigan, Pennsylvania. 
References. Spencer, 1969a: 194; 1976a: 294; part 
2, p. 303. 
— Mesonotum with yellow patch before scutellum 
P. pacifica (Melander) 
Synopsis. Closely resembling P. dorsata but meso- 
notum uniformly gray apart from yellow patch be- 
fore scutellum; frons and palpus bright yellow; 
3d antennal segment deep black, 1st and 2d 
bright yellow; halter yellow; wing length 2 mm; 
male genitalia with aedeagus as in figure 1006; 
158 
