Insects attack Northwoods trees, turn leaves brown - WAOW - Newsline 9, Wausau News, Weather, Sports

Insects attack Northwoods trees, turn leaves brown


RHINELANDER, Wis. (AP) -- Two insects are attacking trees across northern Wisconsin, turning leaves brown.

The state Department of Natural Resources says the aspen blotchminer caterpillar is attacking aspen trees. The alder flea beetle is going after alder trees.

The aspen infestation runs roughly from the St. Croix River to Oneida County. The alder infestations are scattered from Washburn to Langlade counties.

The caterpillar causes brown blotches on aspen leaves that eventually merge. The flea beetle eats the insides of leaves, causing them to turn brown and curl up.

DNR scientists say the trees rarely suffer any permanent damage.

(Copyright 2010 by The Associated Press. All Rights Reserved.)

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