. Common injurious insects of Kansas. Insect pests; Insects. INSECTS ATTACKING CORN. 19 Q333> SOUTHERN OORN-ROOT WORM. {Diabrotica 12-punctata Oliv.; Order, Coleoptera.) Diagnosis.âSame as for Western Corn-root Worm, Description and Life-history.âThe larva, or "worm," cannot â easily, if at all, be distinguished from the Western Corn-root Worm. The adult is a small, yellow beetle, with 12 black spots on[its back (wing covers), and with a black head. This in- sect is closely allied to the Western Corn-root Worm, but differs from it in feeding upon a great variety of vege- tation, g
. Common injurious insects of Kansas. Insect pests; Insects. INSECTS ATTACKING CORN. 19 Q333> SOUTHERN OORN-ROOT WORM. {Diabrotica 12-punctata Oliv.; Order, Coleoptera.) Diagnosis.âSame as for Western Corn-root Worm, Description and Life-history.âThe larva, or "worm," cannot â easily, if at all, be distinguished from the Western Corn-root Worm. The adult is a small, yellow beetle, with 12 black spots on[its back (wing covers), and with a black head. This in- sect is closely allied to the Western Corn-root Worm, but differs from it in feeding upon a great variety of vege- tation, garden crops as well as corn being attacked. It has a more southern habitat than the western form. It is also two-brooded, "eggs for the first brood being 'depos- ited in spring, about the roots of young corn; the second brood usually developing upon the roots of certain wild plants, especially those of the Compositse ; Remedies.âAs this insect is not restricted to one food-plant, it cannot be starved out. So far, no practicable remedy has been found for this pest in its corn-infesting stage. As recommended for the Western Corn-root Worm, high cultivation will aid the corn in resisting the attacks of the pest. Kansas Notes.â-In 1891 a correspondent in Bourbon county sent in specimens of the adult beetle. The correspondent be- lieved that his corn was being injured by this pest. Mr. S. J. Hunter found a few specimens of 12-punctata in Anderson county fields infested with longicornis. (See AVestern Corn-root Worm.) I have this year seen many specimens in a Lyon county corn- Fig. 9. Southern Corn-root Worm; a, larva: b, pupa; c, 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 Kellogg, Vernon L. (Vernon Lyman), 1867-1937; Kansas Stae University. Dept. of Entomology. Lawrence
Size: 1673px × 1494px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1892
