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.

Periodical Cicadas

Every 17 years, Wisconsin experiences a massive emergence of periodical cicadas. These insects are generally harmless, but can be quite loud. Adult females can cause some damage to young plants through their egg-laying activities. Learn about the life cycle of cicadas and their management in this factsheet.

Black Vine Weevil

Both the adult and larva of the black vine weevil feed on over 100 species of woody and herbaceous plant roots. Learn to identify and manage black vine weevil in this factsheet.

Cabbage Looper

Karen Delahaut, UW-Madison Fresh Market Vegetable Program Revised:  8/19/2010 Item number:  XHT1029 The cabbage looper (Trichoplusia ni) is a lepidopteran insect and an important pest of cole crops in Wisconsin.  All cole crops, including cabbage, broccoli, Brussels sprouts, cauliflower, and rutabaga, are susceptible to attack by this insect.  In addition, cabbage loopers will also attack […]


Phil Pellitteri, UW Insect Diagnostic Lab Revised:  5/25/2010 Item number:  XHT1110 Sowbugs and related pillbugs are harmless soil inhabiting creatures that occasionally are found in high numbers in and around the home.  These hard-shelled, multi-legged, segmented isopods feed on decaying organic matter in the soil.  Sowbugs often collect under flower pots, outdoor rugs, and boards, […]


Phil Pellitteri, UW Insect Diagnostic Lab Revised:  5/25/2010 Item number:  XHT1040 Slugs are legless, soft-bodied creatures that resemble snails without a shell.  Slugs feed on a wide range of plants including ornamentals, vegetables and fruits.  A number of species of slugs are found in Wisconsin, but gray and spotted garden slugs are the most common, […]

Roseslug Sawfly

Roseslug sawfly causes damage to leaves of wild and cultivated roses in early summer. This factsheet will help you identify this insect and manage the damage it causes.

Magnolia Scale

Magnolia scale sucks plant sap and excretes drippy, sticky honeydew which can turn black with mold growth. Learn more, including control, in this factsheet.

Citronella Ants

Phil Pellitteri, UW Insect Diagnostic Lab Revised:  5/7/2010 Item number:  XHT1161 Citronella ants (Acanthomyops interjectus), also known as larger yellow ants, nest in moist soil along or under foundations. These ants feed on aphid honeydew and have no interest in human food. You may find Citronella ants when digging in the soil or when large […]


Phil Pellitteri, UW Insect Diagnostic Lab Revised:  5/7/2010 Item number:  XHT1113   Centipedes are long, many legged creatures that run swiftly when disturbed. By nature they are predators that feed on insects, spiders, and other small arthropods. Their body is made up of many segments with each segment containing one pair of legs.  Centipedes have […]

Boxelder Bugs

Though not really harmful to plants, box elder bugs become a nuisance when coming indoors in fall. This factsheet describes the life cycle and habits of box elder bugs.

Support Extension