. Injurious insects : how to recognize and control them . Insect pests; Insect pests. Fig. 294.—Adult of the Grape Root- borer. Enlarged to twice natural size. Original. of the larvs from the roots bj' hand is sometimes practiced. two sizes of borers in the roots. Wlien mature, the borer pupates just below the sur- face of the ground. The adult is a clear-winged moth closelj' resembling a wasp. Culti^'atiou in June and July wiU destroy or bury many of the pupa. Vines should be stimulated liberally so as to withstand attack. Removal Prionid Borers (Prionus spp.). Fig. 295. — A Prionid Borer. Sl
. Injurious insects : how to recognize and control them . Insect pests; Insect pests. Fig. 294.—Adult of the Grape Root- borer. Enlarged to twice natural size. Original. of the larvs from the roots bj' hand is sometimes practiced. two sizes of borers in the roots. Wlien mature, the borer pupates just below the sur- face of the ground. The adult is a clear-winged moth closelj' resembling a wasp. Culti^'atiou in June and July wiU destroy or bury many of the pupa. Vines should be stimulated liberally so as to withstand attack. Removal Prionid Borers (Prionus spp.). Fig. 295. — A Prionid Borer. Slightly enlarged. Original. Large, yellowish-wliite borers, sometimes 2 J inches long, occasion- ally are found working in or on the roots of grape\-ines, pear trees, and other fruits. They are the larva? of dark brown beetles of the gen\is Prionus. Whenworldng in a large root, the borer often hollows out the entire inner parts, leaving only the shell. Removal by hand is the only known Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912
