. Circular. Insect pests; Insect pests. Fig. :i.—The larger corn stalk-borer : Larva iu lower part of corn plant preparatory to hibernation. Reduced. (Original.) stalk entirely and reentering it at another point. Turning upward, the caterpillar, when fully grown, bores toward the outside and cuts a circular hole in the outer wall of the stalk. Then, after spinning a few loose threads across this opening to keep out un- desirable visitors, it retreats a short distance, plugs the burrow below with digested pith, and in the chamber thus created slowly changes to the next or pupal stage (fig. 4, c
. Circular. Insect pests; Insect pests. Fig. :i.—The larger corn stalk-borer : Larva iu lower part of corn plant preparatory to hibernation. Reduced. (Original.) stalk entirely and reentering it at another point. Turning upward, the caterpillar, when fully grown, bores toward the outside and cuts a circular hole in the outer wall of the stalk. Then, after spinning a few loose threads across this opening to keep out un- desirable visitors, it retreats a short distance, plugs the burrow below with digested pith, and in the chamber thus created slowly changes to the next or pupal stage (fig. 4, c). [Cir. IIG]. 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 United States. Bureau of Entomology. Washington, D. C. : The Bureau
Size: 1623px × 1539px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1904
