■ ■ -620- 
beeii apparent only a week or so, and during, that tine leaves 
of half -grown turnip plants have entirely died and dried tip, 
so the fields appear "burned and brown. .. Internal insect 
parasites are not common, but a fungus appears to have 
effected some slight control. A few syrphid. larvae and 
coccinellids are also present, but not vet common. These 
aphids are spreading into adjacent fields of black radish. 
Virginia H. G. Walker (October 27): The turnip aphid is causing 
considerable damage to turnip greens and young cabbage 
seedlings in the Norfolk area- 
Mississippi State Plant Board (October 25): Turnip lice have not 
been numerous ■ thus far, probably owing to the warn weather, 
which has .allowed parasites to continue holding then in check, 
A PENTATOMID BUG ( Peribalus lir.ibolarius Stal) 
North Carolina R. 17. Leiby (October 17); A single report of very severe 
injury, similar to that of the harlequin bug, to a field of 
turnips at Snithfield has been received. A large number of 
specimens were sent with the complaint. 
LETTUCE 
CORN SAIL Wm ( Eel io this obsoleta Fab. ) 
California E. 0. Essig (September 23); The corn ear worm injured 
head lettuce in the Salinas Valley in September, destroying 
a few entire fields. Larvae enter .developing heads and tunnel 
to the heart. 
SUGAR 3" 
BEET LEAP HOPPER ( Eutettix tenellug Baker) 
Utah G. P. ICnowlton (October 20): The beet leaf hopper caused 
considerable damage to sugar beets in many parts of northern 
Utah,. . Russian thistle is now drying' up on the desert breeding 
grounds, and the leafhoppers are scattering to near-by succulent 
. . vegetation in Tooele County and Boxelder County areas. 
MUSHROOMS 
A HUMPBACKED PLY ( Aphiochaeta spp. ) 
Pennsylvania C. A. Thomas (October 20): Larvae of pliorid flies ( Aphiochaeta 
Maryland spp. ) have caused considerable injury to mycelium and to stems 
Delaware and cape of growing mushrooms in mushroom 1 ' houses, during late 
September and October, in Maryland, Delaware, and Pennsylvania. 
In many instances the destructive abundance of these flies could 
be traced to the manure having, been quite wet" when 'placed in the 
houses. 
