REPORT OF ENTOMOLOGIST. 
43 
This species, feeding almost exclusively upon weeds, can 
not be considered injurious at present and is not likely to be¬ 
come so unless it turns its attention to sugar beets which are 
closely related to the weeds upon which the hopper feeds. 
MELANOPLUS Stal. 
alpinus Brun. Taken between North Park and Cameron Pass, Aug. 
20, 1899. (Ball.) 
angustipennis Dodge. A single male answering the description of this 
species has been taken at Colorado Springs, Colo. It is indis¬ 
tinguishable from numerous specimens of M. coccineipes ex¬ 
cept for the blue hind tibiae. It seems probable that coccineipes 
is a red-legged var. of angustipennis. 
atlanis Riley. This is undoubtedly the most generally distributed 
species of locust in Colorado. It may almost be said to occur 
everywhere up to an altitude of 8,500 feet. Adults may be 
seen from about the 20th of June until after there have been 
several heavy frosts in the fall. This species is extremely 
variable in size and coloration. The lighter colored individ¬ 
uals have head, body and legs, except hind tibiae, pale yel¬ 
lowish to rusty brown in color and even the elytra may par¬ 
take of the color to a considerable extent. The latter may be 
conspicuously flecked with dusky spots or the dark spots may 
be entirely wanting. The light colored specimens are more 
prevalent in the lower warmer areas and early in the season 
and it is in the lower altitudes that the species attains its 
largest size. Specimens taken at 7,000 feet altitude and 
higher are nearly all small, dark-colored and without distinct 
markings. A common range in size between the small dark 
males of high altitudes and the larger ones of the eastern por¬ 
tion of the State is from 16.5 mm. to 26 111111., and the females 
range between 22 mm. and 27 mm. This insect does its injur¬ 
ies very largely to the native pastures though it is not averse 
to feeding upon various cultivated crops. It is certainly one of 
the most destructive grasshoppers to the native range pastures 
of the State. 
At Ft. Collins, adults have been taken from June 22nd 
to November nth. Many of the females taken 011 the 
latter date, 1902, still contained their second pod of eggs un¬ 
deposited (Gillette). On July 26, 1901, a number of females 
were dissected at Ft. Collins and none of them had the first 
pod of eggs sufficiently matured for deposition (Ball). This 
species is evidently single brooded. 
We have taken this species at the following points with¬ 
in the State: Ft. Collins, Laporte, Dutch George’s, Diver- 
