30 
BULLETIN 94 . 
7 mm. and 12 mm. in length. The smaller size, shorter wing, 
conspicuous black bands upon the hind femora, and absence 
of the lower ridge for the inclosure of the frontal fovea easily 
separate this species from elliotti. In general appearance, the 
females\)f the two species are very similar. 
rufum Scudd. We have found this species fairly common in the 
valleys of the Arkansas and the Rio Grande rivers and also 
at an altitude of about 8000 feet at Gunnison. We have also 
taken it upon the plains at Greeley and at LaSalle but not at 
Ft. Collins. The captures have been between June 24 (Gree¬ 
ley) and Aug. 11 (Denver). 
Taken at Greeley, LaSalle, Denver, Pueblo, Nepesta, 
Rockyford, Lamar, Antonito and Gunnison. 
This species also varies greatly in color. There are colors 
from light to dark slate through various shades of ferruginous. 
In some the elytra are conspicuously spotted with brown while 
in others the maculation is almost entirely absent. The 
posterior margin of the dorsum of the pronotum is usually 
darkened so as to be in sharp contrast to the lighter color of 
the elytra. 
ARPHIA Stal. 
frigida Scudd. We have taken this species at altitudes ranging be¬ 
tween 5500 feet in Rist Canon near Ft. Collhi3 and 12,000 
feet on Marshall Pass. 
This yellow-winged species has also been taken at West- 
lake, Little Beaver, North Park, Glendevy and Home. It 
seems to be distinctly a mountain species. We have not 
taken it outside of the foothills. 
*pseudonietana Thom. This large species with bright red under wings 
heavily bordered with black is quite abundant in northern 
' Colorado and especially along the eastern foothills in the 
most barren places. It so imitates the ground upon which it 
rests that it can hardly be seen until it moves. It occurs to 
the New Mexico line in the southern part of the State. Our 
specimens come from the following points: Ft. Collins, La- 
porte, Dutch George’s, Livermore, Sterling, Home, Windsor, 
Greeley, Orchard, Merino, Pinewood, Denver, Boulder, Pal¬ 
mer Lake, Colorado Springs, Pueblo, Rockyford, Las Animas, 
and Lamar. 
The earliest capture was at Lamar, May 7, 1892, and the 
latest at Palmer Lake, Oct. 9th, 1898. 
*1 am following A. N. Caudell in calling this species pseudonietana Thomas, instead of 
tenebrosa Scudder. 
