GENERAL 
FEEDERS 
GRASSHOPPERS (Acrididae) 
California, S. Lockv;ood (June 10): Situation in Kern County continues severe. 
Principal species in the infested part of the county is Melanoplus 
devastator Scudd, , followed in much fewer numbers by the valley grass- 
hopper ( Oedaleonotus enigma Scudd,), and in certain cottonfields in the 
Kern Lake area by M, differentialis Thos, However, the last two are not 
abundant enough to cause any considerable amount of damage, devastate 
is now causing some damage to crops in the northeastern part of Los- 
Angeles County. M, mexicanus Sauss, is the principal species in the 
alfalfa fields of the Palo Verde Valley of Riverside County, and in the 
cropped areas of Imperial County. Control measures have slowed these 
down to a marked degree. In some parts of the high areas of San Diego 
Coxinty M. devastator has appeared in outbreak numbers for the first time 
in the reporter's recollection. Heretofore the desert areas of San 
Diego County on the eastern slope of the coastal range have been damaged 
by M. mexicanus, but, with this exception, the greatest damage in the 
h^ls has been done bythe clear-winged grasshopper ( Camnula pellucida 
Scudd,), and on the coastal hills in the northwestern part of the county, 
; ,0, enigma has also done considerable damage. Depredations by M, devastate 
are now occurring on the western foothill section in Tulare County and 
in Mariposa and Tuolumne Counties. C^. pellucida- has surprisingly occurre 
in outbreak numbers in certain rather small restricted areas in central 
Tulare County, in the loxirer Sonoran life zone. Several species are 
occurring now in Siskiyou County in numbers sufficient to warrant control 
measures, 
B, M. Gaddis and assistants (June 2-8 ): In the Imperial Valley of 
Imperial County 95 percent of the M, mexicanus are now in the adult stage 
mating is taking place and, in many areas, egg development is well 
advanced. Hoppers in the motintainous areas near Lag\ina and Palomar, in 
San Diego County, which have been retarded in development by cold weather 
are now beginning to develop, with first- to third-instar M, devastator 
the dominant species. Fifth- and sixth-instar 0^. enigma and M. devastate 
are dominant on the Viejas Indian Reservation in that county, A new 
outbreak of small proportions is reported as developing in the region of 
West Riverside, in Riverside County, and a new and serious outbreak of 
M, devastator and £, enigma in San Bernardino County has developed in 
idle land, threatening surrounding vineyards and injuring some 500 acres 
of melons and grapes. 
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Arizona, (June 2-8); Infestations in several districts of Maricopa, Graham, 
and Gila Counties continue to be seri-xis. Threatening or severe 
infestations are present, the severe areas being spotted and confined mor 
1 / 
Where no name is given after the State the report is by B. M. Gaddis and 
assistants. 
