Cicadas
The buzzing of cicadas means it’s the height of summer. Learn more about these insects in Wisconsin, including their biology and lifecycle, in this article…
Insects
Sawflies
Sawflies are a group insects related to wasps. The plant-feeding larvae often look like caterpillars or slugs, and large numbers cause noticeable defoliation on their hosts. Learn more about sawflies in this article…
Spotted Lanternfly
Spotted lanternfly (SLF) is an invasive planthopper native to Asia. Though not yet found in Wisconsin, SLF has potential for severe damage on a large plant host range. Learn what to watch for with this new pest.
Maple and Other Trees Disorder: Cottony Maple Scale
Cottony maple scale is an insect that can infest the twigs of maples and other shade trees with popcorn-sized cottony masses. This publication describes the symptoms, life cycle and management.
Deciduous Tree and Shrub Disorder: Skeletonizing by Rose Chafer
Skeletonizing of leaves of roses, raspberries, grapes and other plants may be caused by adult rose chafers. Learn to identify and manage rose chafer in this publication.
May/June Beetles
May/June beetles or “Junebugs” are native insects common throughout Wisconsin often be seen near lights on early summer evenings. Learn about these large beetles and their larva in the soil in this factsheet.
Professional Guide to Emerald Ash Borer Insecticide Treatments
This factsheet lists and discribes the variety of insecticide products and application methods available to professionals for control of the emerald ash borer (EAB).
Mealybugs
Mealybugs are slow-moving, small, oval insects covered in white cottony wax. This factsheet describes the identification, biology and management of this insect pest.
Two Lined Chestnut Borer
This factsheet describes two-lined chestnut borer, which is attracked to stressed and weakened oaks and is the most important insect cause of oak mortality.
Cicada Killer Wasps
Cicada killer wasps are common in the southern part of Wisconsin. These non-aggressive wasps feed on cicadas. Learn more in this factsheet.
Four-Lined Plant Bug
Four-linied plant bug attacks a wide variety of herbaceous and woody plants. Learn to identify and manage this pest in this factsheet.
Pear Slug (Pear Sawfly)
Pear slugs are not true slugs, but are larva of the pear sawfly. They damge many kinds of ornamental and fruit trees. This factsheet describes appearance, damage and control.
