50 
bulletin 94. 
The above is written up from 190 males and 100 females 
of the lonof-wiimed form and seven males and one female of 
o o 
the short-winged form. 
The food-plants we have recorded for this species are: 
alfalfa, wheat, oats, corn, potatoes, beets, foliage of fruit trees 
and cabbage. 
We have taken specimens at the following places: Ft. 
Collins, Laporte, Livermore, Virginia Dale, Windsor, Greeley, 
Merino, Ft. Morgan, Julesburg, Snyder, Orchard, Boulder, 
Denver, Palmer Lake, Pueblo, Canon City, Colorado Springs, 
Las Animas, Rocky ford, Lamar, Antonito, Salida, Gunnison, 
Ridgway, Delta, Paonia, Grand Junction, Palisades and Hay¬ 
den. 
The earliest that an adult has been found at Ft. Collins 
was June 26, 1901, (Ball). Ordinary years very few adults 
can be found before the 15th of July. Females taken Nov. 
11, 1902, still contained immature ova. 
flabelUfer Scudd. See Occident alis. 
flabellifer var. brevipennis . See description in following article. 
flavldus Scudd. This is also a plains species and occurs sparingly 
in the southern portion of the State. It is abundant upon 
grass pastures along the foothills and upon the plains near 
Ft. Collins and has been taken feeding upon alfalfa, cabbages, 
leaves of plum and cherry trees and upon Artemisia trifolia , 
so that, whenever a food supply of native plants becomes 
scarce, this species is likely to become seriously injurious to 
cultivated crops. 
This species is somewhat larger than bowditchi , the males 
ranging from 23 mm. to 26 mm. in length and the larger fe¬ 
males measure as much as 32 mm. The antennae of the males 
measure 14 mm. These dimensions are somewhat greater 
than those given for the types. We have taken adults at Ft. 
Collins from July 19th, 1902, till Sept. 19th, 1898. 
Taken at the following points: Ft. Collins, Timnath, 
Greeley, Julesburg, and a single specimen at Lamar. 
The furculae of the male vary about the same as in bow¬ 
ditchi. 
gillettei Scudd. Marshall Pass, Aug. 23, 1896 (Ac. 2260), and Aug. 
27, 1899; Cameron Pass, Aug. 19 and 20,1899; Little Beaver, 
July 17, 1898. 
This species has been found at high altitudes only. It 
was fairly common Aug. 27th on Marshall Pass between 
