. Cooperative economic insect report. Beneficial insects; Insect pests. - 1006 - Adults were present and laying eggs in southern ILLINOIS the week of May 15. By the week of June 26 much defoliation of elms had occurred and new adults were beginning to emerge as far north as Springfield. Elm leaf beetle was exceedingly abundant on Chinese elms in central INDIANA during 1960, with nearly every tree brown by late July. Elm leaf beet normal level July and caus The pest was and adult act ably destruct elms in easte early June, pest was nume during the se le infestations and injury were equal to, or
. Cooperative economic insect report. Beneficial insects; Insect pests. - 1006 - Adults were present and laying eggs in southern ILLINOIS the week of May 15. By the week of June 26 much defoliation of elms had occurred and new adults were beginning to emerge as far north as Springfield. Elm leaf beetle was exceedingly abundant on Chinese elms in central INDIANA during 1960, with nearly every tree brown by late July. Elm leaf beet normal level July and caus The pest was and adult act ably destruct elms in easte early June, pest was nume during the se le infestations and injury were equal to, or slightly above during raidseason in MAINE, heavy populations developing by late ing severe injury to elms in Kennebec, Cumberland and York Counties, generally prevalent and as troublesome as usual in NEW HAMPSHIRE ivity was general in RHODE ISLAND by June 1. The pest was notice- ive in PENNSYLVANIA. In DELAWARE, eggs were fairly abundant on rn Sussex County in mid-May and in northern New Castle County in However, injury was less severe during 1960 than in 1959. The rous in VIRGINIA and caused considerable defoliation in TENNESSEE as on. In ARIZONA, heavy populations of elm leaf beetle defoliated elms in the St. Johns area of Apache County and in some areas of Maricopa County during July and August. This chrysomelid was less destructive to elm foliage in 1960 than during 1958 in several UTAH communities, except in areas of Salt Lake County, where damage was severe. Adults became active early in April in NEVADA due to warm weather, but no eggs were laid until the normal mid-May period. Damage to untreated and improperly treated trees was severe, with the beetle being found as far south as Hawthorne, Mineral County. The pest was very damaging to elms in CALIFORNIA where no control was applied. In a few locations, control was not effective and required repeat applications. Adults appeared in the Salem area of OREGON on April 28 and larvae were reported as abundant on elm at Eagle
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