Distribution. Idaho. 
Reference. Part 2, p. 309. 
2d costal section longer, more than 2.5 times 
length of 4th 10 
10 (9). Male genitalia with aedeagus having several 
coils (fig. 1102) JP . ranunculi (Schrank) 
Synopsis. Frons yellow, 1 strong reclinate 
ors, upper, if present, greatly reduced, 1 in- 
clined ori; 3d antennal segment black, 1st and 
2d yellow; acr sparse, in 2 rows; color showing 
striking seasonal variation, with specimens 
from overwintering puparia darker, mesonotum 
solidly black, side of thorax largely so, and 
scutellum only narrowly yellow centrally; in 
pale summer form mesonotum with dark areas 
rusty orange or pale gray but invariably banded 
and broadly yellow adjoining scutellum, this 
and side of thorax almost entirely yellow; wide 
range of intermediate color forms can occur; 
average wing length in male 2.6 mm, in female 
2.8 mm, 2d costal section long, 2.6-4 times 
length of 4th; male genitalia with aedeagus 
(fig. 1102) divided basally but then fused and 
in rest position forming coil of from 3 to 8 
spirals which can change direction at midpoint. 
Host/Early Stages. Ranunculus spp. Larva form- 
ing white linear mine (fig. 1103), with frass 
in closely adjoining grains; puparium grayish 
or brown, posterior spiracles each with 18-20 
bulbs; in Europe only 2 generations. 
Distribution. California (records given by Frick 
(1959) from Washington and Oregon almost cer- 
tainly represent P. humilis , which was found 
to be common in California; that from Idaho 
represents ]?. aldr ichi , n. sp., couplet 9); new 
record: Colorado, Larimer Co., Cameron Pass, 
11,500 ft, 1 m., 19-22. VIII. 43 (Sabrosky, PSU) ; 
Canada, Europe, Japan. 
References. Spencer, 1969a: 271; 1981: 416. 
Male genitalia with aedeagus not coiled 11 
11 (10). Male genitalia with aedeagus short, distiphallus 
straight, upright (figs. 1104, 1105) 
” P. humi 1 i s Spencer 
Synopsis. Not distinguishable externally from P. 
r anuncul i , some variation in color comparable 
to that in P. ranunculi , with overwintering 
generation darker. 
Host/Early Stages. Ranunculus spp. Leaf mine 
and early stages not known (many specimens 
caught on Ranunculus in San Diego Co., Calif. 
April 1977). 
Distribution. California, Oregon; Canada. 
References. Spencer, 1969a: 245; 1981: 390. 
Male genitalia yith aedeagus in form of 2 strong 
tubules (figs. 1106, 1107) P. modocensis Spencer 
Synopsis. Not distinguishable in external char- 
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