. Bulletin of the Department of Agriculture. Agriculture. '/n THE SOUTHERN CORN ROOTWORM, OR BUDWORM. By F. M. Webster, In Charge of Cereal and Forage Fnsect Investigations. DISTRIBUTION. The parent of the southern corn root worm {Diahrotica duodeciin- piinctata Oliv.), or. as it is often termed, the biidworm, is a yellow or greenish-yellow beetle having 12 black spots on the back, as shown in figure 1, «, from which its specific name, meaning " 12-spotte(; is derived. It is closely allied to the almost equally common striped cucumber beetle {Dia- hrotica vlttata Fab.), and al
. Bulletin of the Department of Agriculture. Agriculture. '/n THE SOUTHERN CORN ROOTWORM, OR BUDWORM. By F. M. Webster, In Charge of Cereal and Forage Fnsect Investigations. DISTRIBUTION. The parent of the southern corn root worm {Diahrotica duodeciin- piinctata Oliv.), or. as it is often termed, the biidworm, is a yellow or greenish-yellow beetle having 12 black spots on the back, as shown in figure 1, «, from which its specific name, meaning " 12-spotte(; is derived. It is closely allied to the almost equally common striped cucumber beetle {Dia- hrotica vlttata Fab.), and also to the parent of the even more de- structive western corn rootworm (Diahrotica longicornis Say). Throughout the coun- try east of the Rocky Mountains, extending from southern Canada southward to North Carolina. Tennessee, Arkansas, and Oklahoma, these 12-spotted and striped beetles to- gether frequent squashes and piunpkins, often collecting in num- bers in the blossoms. The l"2-spotted species during late summer and fall also frequents, often in conspicuous munbers. the flowers of the various species of goldenrod (Solidago). The larva* (fig. 1, c) do not generally attack growing corn in suf- ficient numbers to cause any considerable injury, except perhaps 6134°—13. Fig. 1.—The southoni corn i-ootworm i Diahrotica duo- decimpunciata) : a. Beetle; 6, egg; c, larva; d, anal segment of larva ; e, work of larva at base of corn- stalk ; /, pnpa. All much enlarged, except e. reduced. (Reengraved afti>r Riley, except /, after Chittenden.). 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. Dept. of Agriculture. [Washington, D. C. ?] : The Department : Supt. of Docs. , Govt. Print. Off.
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