288 



PESTS OF ORCHARD AND SMALL FRUITS 



An application of arsenate of lead or Paris green is the best control 

 measure until the fruit is well colored. 



The Strawberry Sawfly {Empria {Harpiphorus) maculata Nort.) 



About the time that strawberries begin blooming, the leaves are 

 eaten by sluglike worms, half an inch long, yellowish in color, with a 

 pale stripe down the back. When not feeding, the slugs often rest on 



Fig. 424. — The Strawberry Sawfly. Enlarged and natural size. Original. 



the under surface of the leaf, coiled in a sort of spiral. The adults are 

 small, four-winged insects. Winter is passed in the ground. There 

 is one brood each year. 



The best means of control is an early application of arsenical poisons. 

 If ripe strawberries are already on the vines when injury is noted, 

 hellebore may be used. 



The Pear-slug (Caliroa {Eriocampoides) cerasi Linn.) 



Small, dark green, slimy slugs eat the surface of the leaves of pear, 

 cherry, and plum, gnawing off the epidermis and leaving the veins and 

 lower surface. The tissues where they have been at work turn brown, 



