. Cooperative economic insect report. Beneficial insects; Insect pests. - 831 - HESSIAN FLY (Phytophaga destructor) - NEBRASKA - All stages in fields of older volunteer wheat in most parts of Lancaster County. Quite likely that a partial second fall brood will occur. (Roselle). ALFALFA CATERPILLAR (Colias philodice eurytheme) - CALIFORNIA - Heavy in Yolo County alfalfa fields' (Cal. Coop. Rpt.). OKLAHOMA - Averaged 1-6 per 10 sweeps in alfalfa in Payne, Creek, Tulsa, Wagoner, Muskogee and Sequoyah Counties. (Wood). NEBRASKA - Larvae light to moderate in alfalfa fields in southeast portion of S
. Cooperative economic insect report. Beneficial insects; Insect pests. - 831 - HESSIAN FLY (Phytophaga destructor) - NEBRASKA - All stages in fields of older volunteer wheat in most parts of Lancaster County. Quite likely that a partial second fall brood will occur. (Roselle). ALFALFA CATERPILLAR (Colias philodice eurytheme) - CALIFORNIA - Heavy in Yolo County alfalfa fields' (Cal. Coop. Rpt.). OKLAHOMA - Averaged 1-6 per 10 sweeps in alfalfa in Payne, Creek, Tulsa, Wagoner, Muskogee and Sequoyah Counties. (Wood). NEBRASKA - Larvae light to moderate in alfalfa fields in southeast portion of State, with 12-25 per 100 sweeps. Adults very abundant in most fields. (Andersen). NORTH DAKOTA - Larvae present in most alfalfa fields, but numbers low. (N. D. Ins. Rpt.). NEW MEXICO - Averaged 2-3 per 10 sweeps in alfalfa near Bethel and Portales , Roosevelt County, and near Lovington, Lea County. Light in Chaves, De Baca, Otero and Quay Counties. Recent rain appears to have reduced threat near Hagerman and Dexter, Chaves County. (N. M. Coop. Rpt.). BEET ARMYWORM (Laphygma exigua) - TEXAS - Averaged 5 per 5 sweeps on alfalfa in Brazos County"! (Randolph) . NEW MEXICO - Moved into young wheat fields in Weber City area, Curry County. (N. M. Coop. Rpt.). CELERY LEAF TIER (Udea rubigalis) - CALIFORNIA - Medium in alfalfa fields and on lawns in College City area, Colusa County. (Cal. Coop. Rpt.). GREEN CLOVERWORM (Plathypena scabra) - OKLAHOMA - Averaged from 1-2 per 10 sweeps in alfalfa in Muskogee County to 10-15 in Tulsa County. (Wood). DELAWARE - Small larvae increased on soybeans and alfalfa throughout State. (MacCreary, Conrad). VIRGINIA - Very light on soybeans in Holland area, southeastern portion of State. (Boush). NORTH DAKOTA - Larvae present in most alfalfa fields, but numbers low. (N. D. Ins. Rpt.). Spotted Alfalfa Aphid Infestation in Nebraska as of September 20. SPOTTED ALFALFA APHID (Therioaphis maculata) - OKLAHOMA - Averaged less than 25 per 10 sweeps in Musk
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