ish striations; abdomen largely yellow, anterior 
tergites slightly darkened centrally; halter yel- 
low, knob normally distinctly darkened; wing with 
last section of vein M 3+4 1,5-2 times length of 
penultimate; male genitalia with aedeagus (figs. 
984, 985) ending in 2 asymmetrical tubules; epan- 
drium (fig. 986, A) with row of stout bristles on 
inner margin and 2 longer ones basally, surstylus 
(fig. 986, B) with several short bristles at end 
and 1 below; sperm pump minute. 
Host/Early Stages. Unknown. 
Distribution. California. 
Reference. Spencer, 1981: 317. 
Small species, wing length up to 1.6 mm 
OP. consults Spencer, n. sp . 
Synopsis. Agreeing closely with P. beckerella but 
generally darker and distinctly smaller; banding 
of mesonotum as in P. beckerella (fig. 983) but 
pale areas less distinct; male genitalia with 
aedeagus (fig. 987) greatly reduced, ending in 
asymmetric tubules; epandrium (fig. 988) with 1 
strong spine, some hairs and 2 shorter spines at 
lower corner. 
Host/Early Stages. Unknown. 
Distribution. Georgia, North Carolina. 
Reference. Part 2, p. 302. 
11 (4). Mesonotum banded or yellow centrally 12 
— Mesonotum entirely dark 18 
12 (11). 3d antennal segment yellow — : 13 
— 3d antennal segment black or at least darkened, 
brownish 16 
13 (12). Dark area of mesonotum shining black 
p. felti (Malloch) 
Synopsis. Head entirely yellow, including entire 
hindmargin of eye; mesonotum shining black, apart 
from yellow area adjoining scutellum (fig. 989); 
side of thorax and legs yellow; abdomen with ter- 
gites yellow bordered; squama yellow, margin and 
fringe dark; wing length in male 2 mm; male geni- 
talia with aedeagus (fig. 990) almost entirely 
unpigmented, divided distally into 2 short, broad 
tubules; sperm pump with long stalk and broad 
blade, largely unpigmented; epandrium with large 
group of bristles at hindcorner (fig. 991, A), sur- 
stylus discrete, with row of 3 or more short, 
stout bristles (fig. 991, B ) . 
Host/Early Stages. Ferns Asplenium pinnatif idum 
and Camptosorus rhizophyllus . Larva forming 
blotch mine, pupating in leaf (details of larva 
not known) . 
Distribution. Illinois, New York. 
References. Frick, 1959: 404; Spencer, 1969a: 297; 
part 2, p. 303. 
— Dark area of mesonotum gray or blackish gray 14 
14 (13). Large species, wing length from 2.8 mm in male 
to 3.5 mm in female P. conspicua (Sehgal) 
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