GIRDLING THE MAIN ROOT 23 
The adult beetle is a general feeder, and sometimes injures shade 
trees. 
Wild strawberry and the roots of various common grasses are the 
natural food of the grubs. It is inadvisable therefore to set out plants 
in ground that has been in sod where examination shows the presence of 
this grub or similar root feeders in numbers in the soil. 
The Cranberry Girdler (Crambus hortuellus Hiibn.) 
Injury by this species is easily recog- | 
\ too 
nized, the plants being girdled just below 
the surface of the sand. The tops show 
(a 
the effects by turning brown and dying. 
Damage is likely to be confined to 
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restricted areas. Flooding for ten days 
‘ ne ‘ Rewts f Fic. 291.—Adult of the 
after AAG ee active Sane . os un 
after picking Is an effective means 0 Cranberry Girdler. Origi- 
control. : nal. 
The Grape Root-borer (Jemythrus polistiformis Harr.) 
The softer tissues within the roots of grapes 
are attacked by a yellowish white borer, 14 
inches long when full grown, and somewhat 
Fig. 292.— The Grape Root-borer. Original. 
robust. Infested vines do not usually die, but 
fail to make thrifty growth. 
sad by the bore a Fic. 293.—Pupa of 
Two years are required by t ne borer to reach fs Ge “Base 
maturity, and therefore one will ordinarily find borer. Original. 
