costal section twice length of 4th. 
Color. Frons brownish yellow, darker 
toward lunule; orbit yellowish gray, 
darker above ors; gena and face dull 
yellow, palpus black; 3d antennal 
segment black, 1st and 2d paler, 
somewhat yellowish; mesonotum, 
scutellum, side of thorax matt gray; 
legs black but knees narrowly yellow- 
ish, more definitely so on foreleg; 
abdomen largely black, tergites 
variably yellow bordered; squama and 
fringe yellow. 
Male genitalia. Aedeagus (figs. 1319, 
1320) with distiphallus divided into 
slender, paired, rather long tubules; 
mesophallus broad, short, paramesophal- 
li well developed, diverging, ventral 
lobe strongly sclerotized above, 
membranous ventrally; sperm pump 
weakly pigmented, with narrow blade. 
Host/early stages. Unknown. 
Holotype m., Arkansas, Garland Co., 
Hot Springs, Recreation Ground, 
17.V.79; paratypes 5 m. , same data 
(K.A.S.); Connecticut, Litchfield Co., 
Sharon, "stem Clematis , " 1 m. , 1 f., 
8. VII. 50 (E. 0. Thornton). Holotype 
and paratypes in USNM, other paratypes 
in KAS and PSU. 
Remarks. The male genitalia of this 
species resemble but are obviously 
distinct from those of two stem miners 
described from Clematis recta L. in 
Europe by Hering (1958), Phytomyza 
clematidicaulis and P. novitzkyi . The 
aedeagus of the latter was illustrated 
by Spencer (1969a: fig. 548). 
The two specimens from Connecticut are 
in poor condition; the male lacks all 
orbital bristles and the female lacks 
its head and most of both wings. 
However, with the data label "stem 
Clematis " and the clear affinity with 
the two European Cf^ecies, the larva 
can be assumed with certainty to be a 
stem feeder on Clematis . 
In view of the poor condition of the 
two specimens caught on Clematis (or 
possibly reared), with the aedeagus of 
the male being identical with that of 
the six specimens caught in Arkansas, 
it has seemed justified and preferable 
to select as holotype one of this 
series. These specimens were caught 
on vegetation beside the small creek 
flowing through the Recreation Ground 
at Hot Springs, Ark. Ranunculus was 
present and was originally thought to 
be the host. However, Clematis was 
presumably present beside the creek — to 
the left of the steps leading down 
from the parking area — growing along 
the bank on the far side of the creek, 
which is less than a meter in width. 
Phytomyza clematoides Spencer, new 
species 
(Figs. 1217-1219) 
Head. Frons twice width of eye, not 
significantly projecting above eye in 
profile; 1 strong reclinate ors, 2 in- 
clined ori, the lower weak, orbital 
setulae sparse, proclinate; gena 
extended at rear, almost 0.5 height of 
eye; 3d antennal segment rounded, 
slightly longer than broad. 
Mesonotum. 3+1 strong dc, acr in 4 
rows in front. 
Wing. Length from 1.6 mm in male to 
1.9 mm in female, 2d costal section 
1.4 (m.) to 1.6 (f.) times length of 
4th. 
Color. Frons, gena, and face yellow; 
hindmargin of eye black, with vti just 
on black ground, which extends down 
upper orbit to level of ors; palpus 
and antenna black; mesonotum shining 
black, scutellum black but less 
shining, side of thorax black; legs 
black, with knees yellow; squama 
yellowish gray, margin and fringe 
brownish black; abdomen black. 
Male genitalia. Aedeagus (figs. 1217, 
1218) with distiphallus directed 
dorsally to basal sclerites, slightly 
divided at apex; strong central 
sclerite attached to apical ends of 
basal sclerites, curving dorsally (see 
P. loewii and P. ranunculoides , figs. 
313 
