bo 
Se) 
bo 
PESTS OF ORCHARD 
Fic. 294.— Adult of the Grape Root- 
borer. Enlarged to twice natural size. 
Original. 
AND SMALL FRUITS 
two sizes of borers in the 
roots. When mature, the borer 
pupates just below the sur- 
face of the ground. The adult 
is a clear-winged moth closely 
resembling a wasp. 
Cultivation in June and July 
will destroy or bury many of 
the pups. Vines should be 
stimulated liberally so as to 
withstand attack. Removal 
of the larve from the roots by hand is sometimes practiced. 
Prionid Borers (Prionus spp.) 
Fie. 295.— A Prionid Borer. 
Large, yellowish-white borers, 
sometimes 23 inches long, occasion- 
ally are found working in or on the 
toots of grapevines, pear trees, and 
other fruits. They are the larve of 
dark brown beetles of the genus 
Prionus. When working in a large 
root, the borer often hollows out 
the entire inner parts, leaving only 
the shell. Removal by hand is the 
only known remedy. 
Slightly enlarged. Original. 
Fic. 
296. — Adult of a Prionid 
Borer, Prionus imbricornis. Origi- 
nal. 
