THE HOP FLEA-BEETLE. 73 
ventral segment sinuate each side, while the middle of the disk near 
the apex has a semioval depression. 
The species was first described in 1847. 1 b 
DISTRIBUTION. 
The hop flea-beetle is a native American species, quite distinct from 
any species found on hops in England or on the Continent. 
The collection of the U. S. National Museum and the published 
records and specimens before the writer show the species to be gen- 
erally distributed in the northern United States and southern Canada. 
from the Atlantic to the Pacific. It does not appear to occur south 
of Nebraska. The list of known localities follows : Cambridge. Mass. : 
Dundee. Ithaca. Long Island. Staten Island, and New York. X. Y. : 
New Jersey, generally distributed (Smith) ; Pittsburg. Pa.: Marshall 
Hall and Cabin John. Md. : Marquette. Detroit. Grand Ledge, and 
Byron. [Mich. ; University, N. Dak. : Lincoln and Omaha. Nebr. : Fair- 
field. Wyo. ; Denver. Longmont, Grand Junction. Delta. Montrose, 
Paonia. and Ft. Collins. Colo.; Logan. Garland. Lehi. Salt Lake, and 
Park City. Utah; Elko. Nev. : Blackfoot, Idaho; San Francisco. Mar- 
tinez. Monterey, Huntington Beach, Pasadena, and Chico. Cal. ; 
Tenino. Wash.; Astoria and Marion, Oreg. : Agassiz, Sardis. and 
Vancouver, British Columbia: Northwest Territory; Manitoba; and 
" Assiniboia " (now Saskatchewan). 
RECENT INJURIES. 
September 16, 1903. the late Dr. James Fletcher first reported this 
species injuring hops in British Columbia. 
During 190G Mr. Theo. Eder wrote from San Francisco, Cal., under 
date of April 9, that hop growers were troubled considerably in some 
sections by ;i hop fleas," or flea -beetles. May 29, specimens were 
received from Perkins, near Sacramento, Cal.. which proved to be 
the species under consideration. August 13, Mr. Hugh F. Fox. Xew 
York. X. Y., sent .specimens and transmitted a report from Mr. Geo. 
Heggie, manager of a large hopyard, the Stepney ranch, owned by 
Sir Arthur Stepney, at Enderby. B. C, where this pest was very 
injurious. Mr. Heggie wrote as follows: 
We have been sorely troubled this year in our hopyard with the "hop flea- 
beetle," which attacks the young vino and leaf as Boon as they appear above 
the ground, and eats out large holes in the leaf, resulting in the plant being 
a In the very closely related P8. COtwexior Lee. the last ventral segment <>f the 
male is convex and not impressed. The latter species is. moreover, larger, 
broader, and more convex, and the elytra! stria' are not Impressed. 
6 The numbers in superior type refer to corresponding numbers in the ap- 
pended bibliography, p. in. 
