Illinois 
-10$- 
All reports were accompanied by specimens and indicate consider- 
able damage. All lots are accompanied by numerous ladybird 
beetle larvae and parasitized individuals. (May 7): The 
county agents of Decatur, Elkhart, and Marshall Counties were 
in today and reported increasing injury from the pea aphid on 
alfalfa. Spots are dying out and in some cases entire fields 
are threatened with destruction. Continued cool weather has 
checked parasite activity. 
W. P. Flint (May 22): A number of cases of injury to alfalfa 
by this insect have been reported in the northern part of the 
State. The aphid reached the maximum about May 1 and since 
that time they have been practicallly- cleaned out by parasites 
and predators. In a recent examination of alfalfa it has been 
difficult to find living pea aphids, although parasitized indiv- 
iduals were numerous. 
Nebraska M. H. Swenk (May 25): Several fields of alfalfa were badly in- 
jured by pea aphid in Dawson County. 
Wyoming C. L. Corkins (May 12): The pea aphid have just been received 
from the- county agent at Caspar, who states that these lice are 
attacking small patches of alfalfa. Damage is slight, but severe 
in spots. 
California C. M. Packard (ivfey 7): An extremely heavy infestation is report- 
ed in nearly all fields in the northeast portion of Antelope Valley, 
in the vicinity -of Roosevelt, about 9 miles northeast of Lancaster. 
Illinoia nisi has been present all spring but is now much reduced 
by coccinellids and syrphids. The first cutting was completely 
lost and in some fields a portion of the plants have been actually 
killed. 
Idaho 
R. E. Campbell (May 8): The attack of the pea aphis on alfalfa 
in the Antelope Valley in northern Los Angeles County is on the 
wane. Considerable damage was done to the first crop, some far- 
mers claiming that in a few cases the attack was so severe as to 
kill the plants. Ladybirds and syrphids are now very numerous 
and the aphis fungus is plentiful. It is expected that the in- 
festation will be practically wiped out by these natural enemies, 
though this natural control will be, as is usually the case, too 
late to save the first crop from damage. 
ALFALF1 WEEVIL ( Fnytor.omus posticus Gyll. ) 
Claude Ttekeland (April 30): , At this date the alfalfa weevil is 
just beginning to oviposit freely where, at the same time last 
season, worms had already grown to maturity. From indications 
now injury from the weevil will occur at the end of the first 
crop and on the second crop. 
