568 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 113 
the pleura. The legs are yellow. The male hind tibia lacks the swell- 
ing or knob which is characteristic of the other species. The male 
hind femur has a comb of about eight spines as in Acantholeria armipes 
(Loew), but the spines are weaker than in A. armipes (Loew) and they 
do not appear to be on a slightly raised ridge. 
Remarxs.—Aldrich and Darlington recorded specimens from 
Moscow Mountain, Idaho, and Czerny (1924) listed North America. 
However, in the United States National Museum there are 2 males 
and 1 female determined by Czerny as Acantholeria cineraria (Loew). 
The specimens are from Austria. They are distinct from all North 
American specimens which I have seen, and I doubt very much that 
A. cineraria (Loew) actually occurs on this continent. Czerny 
incorrectly synonymized A. armipes (Loew) with A. cineraria (Loew), 
with the probable result that specimens of the former were erroneously 
reported as records of A. cineraria (Loew) from North America. 
Inasmuch as this error is difficult to prove, I have included the 
reference to Aldrich and Darlington (1908) under A. cineraria (Loew), 
although it seems probable that the species which they had was 
actually A. armipes (Loew). 
Acantholeria armipes (Loew) 
FIGURE 63 
Blepharoptera armipes Loew, 1862a, p. 224. (Centuria 2, 83). 
Acantholeria oediemus Garrett, 1921, p. 131.—James and Huckett, 1952, p. 267. 
New synonymy. 
Acantholeria oedicnema Garrett, Czerny, 1924, p. 109. 
The dorsocentrals in this species arise from brownish spots. ‘The 
median mesonotal setae may also arise from spots, which may give a 
suggestion of a faint median vitta. The male hind tibia has a bump- 
like swelling on the ventral side near the middle. The male hind 
femur has a row of 7 to 12 strong spines on the posteroventral surface. 
The bases of the spines lie very close together and the tips are hooked. 
The spines arise from a slightly raised ridge. 
I have seen the type (No. 13197) in the Museum of Comparative 
Zoology, Harvard University. 
DistrisuTion.—Northwest Territories, Yukon Territory, British 
Columbia, Alberta, Saskatchewan, “‘H. B. T.,” Oregon, Arizona, New 
Mexico, Utah, Colorado, Montana, South Dakota; June—October. 
Remarxks.—I have examined the types of both A. armipes Loew 
and A. oediemus Garrett and found them to be identical. As men- 
tioned above, the types of A. armipes (Loew) do not agree with 
European specimens of A. cineraria (Loew). The male terminalia 
are distinct, and it is unlikely that Czerny studied this character 
