yellow, margin dark; halter yellow. 
Male genitalia. Aedeagus (fig. 1011) 
with distal tubules fused in lower 
0.67, curving dorsally and recurved at 
end with distal end enlarged; epandrium 
(fig. 1012) with comb of about 10 
strong bristles at inner corner 
directed toward rear. 
Host/early stages. Unknown, probably 
Pteridium aquilinum (bracken). 
Holotype m. , New York, Long Island, 
Farmingdale, 2. VI. 35 (Blanton and 
Borders); paratypes 2 f., same data. 
Holotype and paratype in CUI, 1 
paratype in KAS. 
Remarks. This species closely re- 
sembles P. clara but appears to be 
distinguishable by the larger discal 
cell and thus the shorter ratio of the 
last to penultimate sections of vein 
M 3+4. 
The aedeagus is intermediate between 
that of P. clara , in which the distal 
tubules are substantially longer and 
only slightly enlarged at the end 
(fig. 1008), and P. pteridii Spencer, 
1973c, a leaf miner on bracken in 
Europe, in which the distal tubules of 
the aedeagus are not recurved and the 
terminal enlargement is more pronounced 
(Spencer, 1973c: figs. 3, 4). 
Phytoliriomyza varia (Melander) , 
new combination 
(Fig. 1022) 
Agromyza varia Melander, 1913: 264. 
Holotype female from Idaho in USNM. 
Phytobia (Trilobomyza) varia, Frick, 
1957b: 203; 1959: 393. 
The holotype of Agromyza varia has now 
been examined and it is transferred to 
Phytoliriomyza here. 
P. varia is known from the unique 
female holotype. It is distinguishable 
from P. volatilis by the generally 
paler color, particularly the yellow 
femora. It is not distinguishable 
from P. mikii (Strobl, 1898), known 
from the Austrian Alps and Denmark, 
and may be synonymous with it. 
However, formal establishment of this 
possible synonymy must be delayed 
until males from North America become 
available that can positively be 
associated with the holotype of P. 
varia . The aedeagus and epandrium of 
P. mikii (holotype) were illustrated 
by Spencer (1966a: figs. 30, 31). The 
sperm pump of a male from Denmark 
(coll. Tschirnhaus) is shown in figure 
1022; the blade is characteristically 
broad and fanlike (contrast P. 
volatilis , figs. 1019-1021). 
Phytoliriomyza volatilis Spencer 
(new to U.S. A. ) 
(Figs. 1016-1021) 
Phytoliriomyza volatilis Spencer, 
1969a: 202. Holotype male from 
British Columbia in CNC. 
The type series consisted of four 
specimens and another male has now 
been seen from Colorado, Clear Creek 
County, Mt. Evans, Echo Lake, 10,600 
feet, 23. VII. 61 (C. H. Mann), in CNC. 
Important characters of this species 
are the entirely black legs; the side 
of the thorax is predominantly black, 
but the lower half of the notopleuron 
and the upper half of the mesopleuron 
are yellowish. The male terminalia 
closely resemble those of P. mikii , 
known from the Austrian Alps and also 
recently collected in Denmark 
(Tschirnhaus). However, the surstylus 
is more slender and less widening 
distally and the distal tubules are 
slightly longer and more slender. The 
arrangement of bristles within the 
epandrium is similar in the two 
species (fig. 1018, male from Abisko, 
northern Sweden). The most obvious 
difference in the genitalia is the 
smaller and narrower blade of the 
sperm pump (figs. 1019-1021), which is 
broad and fanlike in P. mikii (fig. 
1022 ). 
Specimens from Lapland in northern 
Sweden were previously considered to 
represent P. mikii , but the legs are 
305 
