References. Spencer, 1969a: 205 (as P. lonicerae); 
1981: 341. 
Note. This species was treated by earlier authors as 
P. lonicerae R.-D. until Griffiths (1973b) dis- 
covered that this represented a misidentif ication. 
5 (4). Legs with only foreknee yellowish 
J?. plagiata (Melander) 
Synopsis. Frons bright yellow above, black or gray 
in lower half; antenna black; gena extended at rear; 
mesonotum with 5 or 6 dc but only posterior 3 
strongly developed; humerus, notopleuron, upper mar- 
gin of mesopleuron dull yellow; scutellum entirely 
dark, black; squama yellowish, fringe black; wing 
(fig. 1039) length 2.8 mm, 2d costal section long, 
4.5 times length of 4th discal cell very small, 
crossveins closely approximated, last section of 
M 3+4 long, 4.5 times length of penultimate; male 
genitalia unknown. 
Host/Early Stages. Unknown. 
Distribution. Idaho, Montana; Canada. 
References. Melander, 1913: 273; Frick, 1959: 417 
(as Phytagromyza ) ; Spencer, 1969a: 208. 
— Legs with all knees yellow 6 
6 (5). 3d antennal segment and frons brownish orange 
J?. sp. indet. No. 1 
Synopsis. Frons distinctly projecting above eye; 
gena angular, 0.25 height of eye; mesonotum grayish; 
humerus bright yellow, notopleuron faintly yellow- 
ish; wing length in female 2.5 mm; male genitalia 
unknown . 
Host/Early Stages. Unknown. 
Distribution. Kansas. 
Reference. Part 2, p. 307. 
3d antennal segment black 7 
7 (6). Male genitalia with aedeagus having distiphallus 
asymmetrical (fig. 1041) P. lonicerina Spencer 
Synopsis. Frons and orbit ochreous yellow, rarely 
somewhat darkened below; 3d antennal segment with 
fringe of white pubescence; gena extended at rear, 
almost 0.33 height of eye; mesonotum matt blackish 
gray, with up to 5 dc ; humerus and notopleuron 
ochreous yellow; mesopleuron dark, with narrow yel- 
low upper margin; wing length from 2.6 mm in male to 
3 mm in female, discal cell small, last section of 
M 3+4 4 times length of penultimate; male genitalia 
with aedeagus as in figures 1040, 1041; sperm pump 
with broad blade. 
Host/Early Stages. Unconfirmed but almost certainly 
Lonicera involucrata , on which specimens were caught 
in California (K. E. Frick). Larva believed to be 
responsible for greenish mines that are abundant on 
this host in Alameda and Contra Costa Counties, 
Calif., pupation externally; puparium brown, poste- 
rior spiracles with ellipse of some 20 minute bulbs 
arranged in 2 groups, with conspicuous anal projec- 
tion below. 
164 
