1332, 1326); sperm pump minute, 
unpigmented . 
Host/early stages. Clematis 
ligusticifolia . Larva forming upper 
surface linear mine (fig. 1219) with 
frass in line of fine grains, pupating 
externally. 
Holotype m. , Washington, Benton Co., 
Prosser, emerged 19. IV. 52 ex leaf mine 
on Clematis ligusticifolia (K. E. 
Frick, Lot No. 51 - 39); paratype f., 
same data; both in CAS. 
Remarks. Distinctive characters of 
this species are the single strong 
ors, the shining black mesonotum, and 
the short second costal section. The 
male genitalia indicate a relationship 
with the two black species feeding on 
Clematis (l>. loewii ) and Ranunculus 
(^. ranunculoides , n. sp.). 
Phytomyza coloradella Spencer, new 
species 
(Figs. 1201, 1202) 
Head. Frons twice width of eye, not 
projecting above eye in profile; 2 
equal ors, 1 strong ori, orbital 
setulae sparse, in single row; gena 
extended at rear, almost 0.5 height of 
eye, parafacial prominent, filling 
half distance between lower eye margin 
and lower margin of gena; 3d antennal 
segment round, slightly enlarged. 
Mesonotum. 3+1 dc, acr in 2 rows. 
Wing. Length in male 2.5 mm, 2d 
costal section twice length of 4th. 
Color. Frons yellowish orange; upper 
orbit black to lower ors, faintly 
infuscated below, entire hindmargin of 
eye dark; face and gena yellow, palpus 
black; 3d antennal segment black, 1st 
and 2d paler, yellowish; mesonotum and 
scutellum matt gray, side of thorax 
similar, apart from narrow yellow 
upper margin of mesopleuron; legs with 
forecoxa yellowish distally, femora 
black, with knees faintly and narrowly 
yellow; squama gray, margin and fringe 
black. 
Male genitalia. Aedeagus (figs. 1201, 
1202) with distiphallus extended into 
membranous tubule; ventral sclerite 
large but weakly developed on right 
side, basal sclerites fused; sperm 
pump with small, pale blade and 
extended base on right side. 
Host/early stages. Unknown. 
Holotype m., Colorado, Lake Co., 
Independence Pass, 12,100 ft, tundra, 
7. VIII. 61; paratype m. , Clear Creek 
Co., Mt. Evans, Summit Lake Flats, 
12,800 ft, 24. VII. 61; (both C. H. 
Mann), both in CNC. 
Remarks. Although generally 
resembling P. alamedensis , this 
species is distinguishable by the 
yellowish forecoxa. The male 
genitalia indicate that the two 
species are not closely related. 
Phytomyza coquilletti Spencer, new 
species 
(Figs. 1117, 1118) 
Head. Frons broad, twice width of 
eye, strongly projecting above eye in 
profile; 2 equal, reclinate ors, 2 
longer, inclined ori, orbital setulae 
sparse, more numerous in area of ori; 
gena extended at rear, slightly more 
than 0.5 height of eye, parafacial 
pronounced, 0.5 width of gena; 3d 
antennal segment distinctly longer 
than broad. 
Mesonotum. 3+1 strong dc, acr in 2 
rows . 
Wing. Length from 3.2 mm in male to 
3.5 mm in female, 2d costal section 
twice length of 4th. 
Color. Head entirely yellowish orange, 
including hindmargin of eye; mesonotum 
and scutellum ash gray; humerus and 
notopleuron yellowish orange, mesopleur- 
on appearing pale but slightly suffused 
with gray; legs with coxae and femora 
yellowish orange, tibiae and tarsi 
slightly darker, more brownish; abdomen 
predominantly yellowish; squama and 
margin yellowish, fringe ochreous. 
314 
