sclerite large, almost as long as distiphallus ; 
sperm pump with strongly pigmented round blade 
and distinct stalk. 
Host/Early Stages. Aquilegia spp. , Thalictrum 
spp. Larva forming irregular upper surface 
linear mine, with frass in conspicuous black 
strips; puparium oval, shining orange, normal- 
ly at first lightly adhering to leaf near end 
of mine. 
Distribution. Widespread in California, 
Washington; records given by Frick (1959: 431) 
from Connecticut, District of Columbia, Illi- 
nois, and Indiana probably refer to P. aqui - 
legivora (couplets 70 and 126). 
References. Frick, 1959: 431; Spencer, 1981: 401. 
Acr in 4 rows; tarsi yellow 
P. ranunculoides Spencer, n. sp. 
Synopsis. Frons black, orbit moderately shin- 
ing; 1 ors, 2 ori; 3d antennal segment small, 
round; mesonotum shining black; femora black, 
tibiae brownish; wing length 1.9-2.25 mm, 2d 
costal section slightly more than 3 times 
length of 4th; male genitalia with aedeagus as 
in figures 1326, 1327, and distiphallus di- 
vided, recurved; sperm pump minute (fig. 1328). 
Host/Early Stages. Ranunculus abortivus . Larva 
forming white, upper surface, linear mine, 
beginning with minute spiral (fig. 1329); pu- 
parium yellowish, posterior spiracles each 
2-armed, with total of 12-20 bulbs. 
Distribution. Minnesota. 
Reference. Part 2, p. 320. 
124 (122). 2d costal section exceptionally short, less 
than twice length of 4th P. thalictrella Spencer 
Synopsis. Frons broad, 3 times width of eye, 
entirely black, orbit moderately shining; 1 
reclinate ors, 1 inclined ori, sometimes 
minute hair below; gena broad, about 0.5 height 
of eye; mesonotum deep black, weakly shining, 
acr in 2 rows; legs black; squama grayish 
black, margin and fringe black; wing length 
from 1.25 mm in male to 1.75 mm in female, 2d 
costal section from 1.25 to 1.67 times length 
of 4th; male genitalia with aedeagus (figs. 
1330, 1331) having distal tubules upright or 
more recurved; sperm pump small, weakly pig- 
mented . 
Host/Early Stages. Thalictrum fendleri . De- 
tails of leaf mine not available. 
Distribution. California (Alpine Co.). 
Reference. Spencer, 1981: 427. 
2d costal section 2-2.5 times length of 4th 125 
125 (124). Acr in 4 rows or lacking P. loewii Hendel 
Synopsis. Head black, orbit shining, 1 ors, 1 
ori, at most minute hair below; mesonotum and 
scutellum shining black; legs black, foreknee 
217 
