May a, X93X 
Life History of Recurvaria milleri 
139 
been found below 7,000 feet elevation and rarely above 9,000 feet, 
although the lodgepole pine stands extend both above and below these 
contours. 
The reasons for these distinct limits to the distribution of the insect 
have not been determined. The moths in flight have been recorded in 
Fig. 4.—Map of the Yosemite National Park, Calif., showing range of distribution and areas 
infested with Recurvaria milleri , 1919. 
localities many miles outside of the infested areas; in one instance in the 
Yosemite Valley at an elevation of 4,000 feet, 6 miles distant from the 
nearest infestation, and on Cathedral Peak, at an elevation of 10,000 feet, 
moths were abundant 3 miles distant from the nearest" infestation. No 
trace of larval infestation has ever been found in either locality. 
