. Cooperative economic insect report. Insect pests Control United States Periodicals. - 720 -. FALL ARMYWORM (Laphygma frugiperda) - LOUISIANA - Remains light generally, 3-20 per 100 swe'eps in alfalfa and grasses in 4 parishes. (Oliver). SWEETCLOVER WEEVIL (Sitona cylindricollis) - IDAHO - Damage common on seed clover in eastern and south central areas though heavy damage rarely encountered. (Gittins). MINNESOTA - Summer-generation adults emerging July 10. (Minn. Ins. Rept. ). LEAF MINERS - ARIZONA - Liriomyza sp. common in alfalfa in Maricopa, Pima, Pinal and Yuma Counties. Considerable dama
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 720 -. FALL ARMYWORM (Laphygma frugiperda) - LOUISIANA - Remains light generally, 3-20 per 100 swe'eps in alfalfa and grasses in 4 parishes. (Oliver). SWEETCLOVER WEEVIL (Sitona cylindricollis) - IDAHO - Damage common on seed clover in eastern and south central areas though heavy damage rarely encountered. (Gittins). MINNESOTA - Summer-generation adults emerging July 10. (Minn. Ins. Rept. ). LEAF MINERS - ARIZONA - Liriomyza sp. common in alfalfa in Maricopa, Pima, Pinal and Yuma Counties. Considerable damage some fields. Very prevalent in 20 acres of peanuts near Yuma. (Ariz. Coop. Rept., July 16). POTATO LEAFHOPPER (Empoasca fabae) - DELAWARE - Noticeable damage to alfalfa. Abundant on soybeans. (Milliron). MARYLAND - Yellowing conspicuous in some fields in central counties. Populations variable, as high as 21 in 1 sweep. (U. Md., Ent. Dept. ). WISCONSIN - Yellowing of alfalfa showing up. (Wis. Ins. Bui. ). THREE-CORNERED ALFALFA HOPPER (Spissistilus festinus) - LOUISIANA - Twenty-six to 180 per 100 sweeps in Natchitoches and West Baton Rouge Parishes. (Oliver). ARIZONA - Two to 4 per sweep in 3 alfalfa seed fields on Yuma Mesa. Heaviest in 5 years. (Ariz. Coop. Rept.). CLOVER APHID (Anuraphis bakeri) - IDAHO - Heavy infestation in seed red clover in Idaho Falls area. Light, seldom more than 10 percent of heads infested, in Lincoln, Gooding, Jerome and Twin Falls Counties. Predators numerous in these counties. (Gittins). OREGON - This species with spider mites building up on clover in Ontario area but not economic to July 19. (Morrison). A NITIDULID (Meligethes nigrescens) - OREGON Large numbers migrating into red clover in Willamette Valley,. July 8-14. (Every).. 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 wor
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