Injurious Insects. 29 



Lettuce. GREEN LETTUCE-WORM (Plusia brassicce, Riley) 

 Larva somewhat over an inch long, pale green, with 

 stripes of a lighter color , feeding upon the leaves of many 

 plants, as cabbage, celery and endive. 



jRj/iijily. Pyrethrum. Kerosene emulsion. Hot water. 



Lice. See Aphides. 



May-beetle or May-bug (Lac/mosterna fusca, Frohl.). A 

 large and familiar b.own beetle, feeding upon the leaves 

 of many kinds of trees. The common white grub is the 

 larval state. It often does great damage to sod and to 

 strawberries. 



Remedy. For beetle, use arsenites, or jar them early in 

 the morning. For grubs, plow up the lawn so as to ex- 

 pose them to field birds and poultry, or turn in hogs. 



Mealy-bug {Dactylopius adonidum, Linn.). A white scale- 

 like insect attacking greenhouse plants. 



Remedies. Whale oil soap. Carbolic acid and soap. 

 Removing insects with brush on tender plants. Whiskey, 

 applied with a brush. Fish brine. 



Melon. MELON-WORM (Eudioptis hyalinata, Linn.). Larva, 

 some over an inch long, yellowish-green and slightly hairy, 

 feeding on melon leaves, and eating holes into melons, 

 cucumbers and squashes ; two or more broods. 



Remedy. Hellebore. 



SPOTTED CUCUMBER BEETLE. See under Cucumber. 

 STRIPED CUCUMBER BEETLE. See under Cucumber. 

 SQUASH-VINE ROOT-BORER. See under Squash. 

 Mushroom. MUSHROOM- FLY. The larva bores through 

 the stems of the mushrooms before they are full grown. 



Preventive, Keep the beds cool so that the fly cannot 

 develop. When the fly is present, growing mushrooms in 

 warm weather is usually abandoned. 



Onion. MAGGOT (Anthoniyia ceparum, Meigen). Nearly 

 indistinguishable from the Cabbage Maggot, which see. 



