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THISTLE APHID ( Anuraphis cardui L. ) 
Idaho. R. W. Haegele (March 2): The thistle aphid was found hatching on 
prune in southwestern Idaho early in March and most of the eggs hatched 
in the warmer districts on this date. The infestation seems general 
and indications are that control measures will he necessary to prevent 
severe damage. The situation is similar to previous ones when heavy 
infestations of this aphid on prunes have "been ohserved in springs 
following unusually mild winters. The winter was one of the mildest 
on record. 
GRAPE 
GRAPE LEAEHOPPER ( Srythroneura comes Say) 
Missouri. L. Haseman (March 2^) : Grape leafhoppers seem to have wintered 
perfectly throughout central Missouri and in leafy and grassy harbors 
they are now present in swarms. 
Arizona. C. D. Lehert (March 25): Adults were numerous on trumpet vines 
on a ranch west of Phoenix on March 10. : 
WALNUT 
WALNUT CATERPILLAR ( Datana integerrina G. & R. ) 
Missouri. L. Haseman (March 23): In recent diggings in the vicinity of 
walnut trees that were completely stripped last fall little evidence 
of overwintering pupae have "been seen, indicating that in spite of the 
terrible infestation last fall we will not have an unusually heavy 
winter carry-over. 
CITRUS 
GREEN CITRUS APHID (Aphis spiraecola Patch) 
Florida. H. Spencer (March 2k): These aphids were numerous on orange 
and grapefruit trees around Haines City, in Polk County, central 
Elorida, the first week in March. The outbreak was subsiding on 
March 15, when the Orlando district and the Okeechobee groves near 
Port Mayaca were becoming infested. In general over the State the 
infestation is rather spotted and loss intense than in 1937. Around 
Orlando the Chinese ladybeetle (Leis dimidiatus P. ) is appearing in 
larger numbers than in previous years and is the most important con- 
trolling factor. It was observed feeding also at floral nectnries 
of avocado trees. 
