low; squama yellow, margin and fringe black; 
wing length from 2. 5- 2 .75 mm in male to 3 mm in 
female, 2d costal section 3 times length of 
4th; male genitalia with aedeagus as in figures 
1130, 1131, with minute spinules beside distal 
tubules toward base. 
Host/Early Stages. Cicuta douglasii . Larva 
forming irregular greenish blotch mine (fig. 
1132), which soon turns yellowish brown; de- 
tails of larva (puparium) not established. 
Distribution. California. 
Reference. Spencer, 1981: 380. 
— Mesonotum blackish gray 24 
24 (23). Large species, wing length 2. 5-3. 4 mm 
p. t lingitica Griffiths 
Synopsis. Frons, face, and orbit yellow, last 
at most slightly darkened; 2 ors, upper shorter 
than lower, normally 2 ori; 3d antennal seg- 
ment black, 1st and 2d frequently slightly 
paler; acr irregularly in 2 rows; side of 
thorax with upper band broadly yellow; legs 
black, with all knees yellow; wing with 2d 
costal section long, 4-5 times length of 4th; 
male genitalia with aedeagus (figs. 1133, 1134) 
having distiphallus long but largely membra- 
nous, no spinules beside basal sclerites. 
Host/Early Stages. Heracleum 1 ana turn . Larva 
forming irregular linear blotch mine, inter- 
parenchymal, thus appearing yellowish green and 
easily overlooked, several larvae frequently 
feed together; puparium black, posterior spir- 
acles each with 17-27 bulbs. 
Distribution. California (Alameda Co.); 
Alaska. 
References. Griffiths, 1973a: 227; Spencer, 
1981: 428. 
Smaller species, wing length 2-2.55 mm 
- p. alaskana Griffiths 
Synopsis. Frons and orbit yellowish, hindmargin 
of eye black to base of vti; 1 strong reclinate 
ors, 2 inclined ori; 1st antennal segment yel- 
lowish, 2d and 3d black; upper band of side of 
thorax bright yellow; legs black, all knees 
yellow; wing with 2d costal section long, from 
just less than 3 to just less than 4 times 
length of 4th; male genitalia with aedeagus as 
in figures 1135, 1136, with small group of 
spinules above left basal sclerite just beyond 
midpoint, distiphallus divided apically; sperm 
pump minute (fig. 1137). 
Host/Early Stages. Artemisia douglasiana . 
Larva forming long, narrow, white, linear mine 
(fig. 1138); puparium black, posterior spir- 
acles each with 18-22 bulbs. 
Distribution. California; Alaska. 
References. Griffiths, 1974d: 300; Spencer, 
1981: 371. 
183 
