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LET TU CE 
SUGAR-BEET ROOT APHID ( Pemphigus betae Doane) 
California. R. E. Camp "bell (October 5): The aphid on lettuce 
in the Salinas-Watsonville district, reported on page 502 
of the Insect Pest Survey Bulletin dated October 1, 1939, 
has been identified as the above. 
SWEETPOTATO 
SWEETPOTATO WEEVIL (Cylas formicarius E.) 
Louisiana. C. 0. Eddy (October 25): Reports indicate that the 
infestation is running higher than usual. 
MUSHROOMS 
MUSHROOM INSECTS (Diptera) 
Pennsylvania and Delaware. C. A. Thomas (October 25): Cecidomyiid 
larvae ( Mycophila sp. and others) are very abundant in the 
mushroom district from Nottingham to Kennett Square, Chester 
County, Pa. , and south into the. mushroom houses of northern 
Delaware. Much damage. Faedogenic larvae very common, from 
12 to 20 new larvae being produced from the mother larva. 
Infested mushrooms refused for canning purposes. 
A MITE ( Tarsonemus sp . ) 
Pennsylvania. C. A. Thomas (October 25): Abundant in some of 
the mushroom houses in the mushroom district from Nottingham 
to Kennett Square, turning the stem-base red by their feeding. 
