72 SOME INSECTS INJURIOUS TO TRUCK CROPS. 
and corn; August 4, of injury to cucumber and melon, reported by 
Mr. S. Halverson, Gonzales, Cal.; August 7, of injury to cabbage, 
beans, and peas at Fort Ross, Cal., by Mr. J. B. Williams; August 11, 
by Prof. E. S. G. Titus of serious injury to melons at Imperial Junc- 
tion, Cal., for that and the previous year. September 2, 1907, Mr. 
Willams again reported injury to vegetables at Fort Ross, Cal., 
cabbage being badly affected. 
Of this species, Mr. I. J. Condit, of San Luis Obispo, Cal., wrote, on 
September 6, 1907, that it was the worst pest in that vicinity, swarm- 
ing over everything and evidently having no choice as to its food. 
Gardeners there stated that they could not grow zinnas, daisies, and 
some other plants, as the flowers were so badly eaten that they were 
worthless. The blossoms were sprayed, which protected them, but 
the new buds opening the following day were attacked just as severely. 
In 1908, Mr. H. O. Marsh, while carrying on investigations for the 
Bureau of Entomology at Tustin and Garden Grove, Cal., reported, 
September 24, injury by the larve to peanuts. At that time larve, 
pup, and newly formed adults were common in soil about growing 
peanuts, some of the larvee being in the nuts which had been very 
badly injured by this species and a species of Blapstinus. Similar 
injury was noted by Mr. C. E. Ott at Garden Grove, Cal., who reported 
that the beetles caused him considerable trouble by nearly ruining a 
young orange grove earlier in the season. 
March 16 of the same year, Mr. G. E. Beusel, Oxnard, Cal., sent 
specimens of this beetle, stating that it was attacking beet leaves. 
In one field the beetles had destroyed a very good stand of 30 acres 
of beets in a few days. Our correspondent took it for Diabrotica 12- 
punctata, whose larva he knew developed at the roots of grasses and 
corn. He also stated that he did not think that there was a practical 
remedy to check the work of the beetles of this insect on young beets. 
April 16, Mr. Thomas J. Simpson, Noyo, Cal., wrote in regard 
to this insect and its work in gardens in that vicmity. In summer 
they were so thick that they ate leaves from beans, potatoes, corn, and 
other plants. A remedy was desired that would not poison the vege- 
tables. Writing of this species April 24, Mr. Edward M. Ehrhorn, San 
Francisco, Cal., stated that in some seasons this beetle was quite a 
pest in orchards, especially on young trees, and that at times it also 
caused much damage to seed farms. The parasitic fly, Celatoria 
diabrotice Shimer, in certain seasons keeps the beetle in check, 
appearing at these times in great numbers, probably on account of 
weather conditions. 
As to remedies, he thought that an arsenical dusted on the plants 
would be preferable to an arsenical spray in treating this species in 
beet fields. 
