THE CHERRY LEAF-BEETLE. 8 
In a note entitled ‘‘Beetles on buttercup and azalea,” in answer to a 
correspondent, Walsh (Pract. Ent., 1866, vol. 2, p. 9) determined 
G. rufosanguinea from Ranunculus acris and another beetle from 
Azalea nudiflora. Quite obviously the G. rufosanguinea should have 
been recorded from the azalea. Lintner (1896), quoting Walsh, 
says: “‘If the identification of Walsh was correct, it [i. e., G. cavi- 
collis] has also been taken in June on buttercup, Ranunculus acris, in 
the vicinity of Albany, N. Y.”’ 
DISTRIBUTION. 
Galerucella cavicollis is known to occur from Canada and the 
New England States west to Minnesota, and south along the Appala- 
chians into West Virginia and Virginia. The type specimen is. said 
to have come from North Carolina. It has been taken, accord- 
ing to Smith (1909), at Sea Isle and Anglesea, both localities near the 
southern point of New Jersey. According to Chittenden (1899), it has 
also been taken at Vancouver, British Columbia, and in Texas. It 
quite likely occurs throughout the natural range of its native host 
plant, Prunus pennsylvanica, which, according to Gray,‘ is ‘“‘Lab. to 
B. C., S. to Pa., Great L. region, centr. Ia., and along mts. to N. C., 
Tenn., and Colo.” Britton and Brown? add Georgia. 
ECONOMIC HISTORY PREVIOUS TO 1915. 
Economic injury by this beetle was first recorded in 1894 by Davis, 
who found it feeding on cultivated cherry at Bellaire, Mich. It was 
again reported the following year from Au Sable Forks, N. Y., by 
Iintner. In 1897 it was reported as destructive at Traverse City, 
Mich., by Pettit, and (1898) at Corning, N. Y., by Felt. The next 
year Chittenden (1899) recorded injury from St. Ignace, Mich., and 
Spruce Creek and Lebanon, Pa. Injury was observed by Harvey 
(1901) at Orono, Me., in 1900. 
No outbreaks occurring after this time have been specifically 
recorded in entomological literature, although there are some general 
references to the beetle. However, economic injury was reported by. 
correspondents to the Bureau of Entomology in 1912 from Newberry 
and Pontiac, Mich., and in 1914 from Muncy and Williamsport, Pa, 
THE 1915 OUTBREAK. 
EXTENT OF INJURY. 
The 1915 outbreak was probably by far the most injurious that has 
ever occurred. Complaints regarding this pest were much more 
numerous and from many more localities than those from all preced- 
ing years combined. The beetle, instead of inflicting injury in a few 
1 New Manual of Botany (7th edition). 2Tllustrated Flora of the United States and Canada. 
