Managing Thrips in Greenhouses

Western flower thrips are likely the most serious pest of greenhouse crops in the world. Learn about these pests, the damage they cause, and management options in this factsheet.

Managing Mites in Greenhouses

Several types of mites can cause serious damage to a variety of greenhouse crops. Learn why mites are a problem in greenhouses, and what to do about them, in this factsheet.

Larder Beetles

Phil Pellitteri, UW Insect Diagnostic Lab Revised:  4/27/2004 Item number:  XHT1051 Adult larder beetles (Dermestes lardarius) are 1∕3 inch long black beetles with a broad, pale tan, black spotted band across the front portion of the wing covers.  Larder beetle larvae are reddish brown and densely covered with short and long hairs, and have two […]

Home Vegetable Insecticides

While cultural methods are preferred to control insect damage in vegetable gardens, insecticides may be necessary at times. This factsheet lists products that control specific specific insect pests.

Indian Meal Moth

Phil Pellitteri, UW Insect Diagnostic Lab Revised:  4/27/2004 Item number:  XHT1047 Are little moths fluttering around the kitchen?  Are white worms crawling out of the bird seed?  A very common indoor pest at any time of the year is the Indian meal moth. Adult Indian meal moths are small insects with a wingspread of about […]

Deer Flies and Horse Flies

Phil Pellitteri, UW Insect Diagnostic Lab Revised:  4/27/2004 Item number:  XHT1049 There are over 30 species of blood feeding deer flies (Chrysops) and horse flies (Tabanus, Hybomitra) found in Wisconsin.  They belong to a family of flies called the Tabanids.  Deer flies and horse flies can be active from May until September.  The adult females […]

Drugstore Beetles

Phil Pellitteri, UW Insect Diagnostic Lab Revised:  5/20/2011 Item number:  XHT1103 The drugstore beetle and the closely related cigarette beetle are small reddish-brown beetles that infest grains, pet food, straw flowers, tea, old rodent bait, red pepper, flour, spices, leather, animal hair, tobacco and other dried plant material.  Historically, these insects were often pests of […]


Phil Pellitteri, UW Insect Diagnostic Lab Revised: 17/12/2016 Item number:  XHT1108 Millipedes can become pests in late summer and fall, as well as during wet periods, when they are found in large numbers in and around the home.  These harmless, hard-shelled, segmented worms feed on decaying organic matter in the soil and can be easily […]

Pavement Ants

Rachel Arango, UW-Madison Entomology and Phil Pellitteri, UW Insect Diagnostic Lab Revised:  1/27/2008 Item number:  XHT1160 Background:  Native to Europe, pavement ants were introduced into eastern North America in the 1700’s, and have become a common indoor problem in Wisconsin in recent years.  Pavement ants feed on foods rich in proteins (e.g., meats, nuts, cheese), […]


Mealybugs are slow-moving, small, oval insects covered in white cottony wax. This factsheet describes the identification, biology and management of this insect pest.

Masked Hunter Bug

Phil Pellitteri, UW Insect Diagnostic Lab Revised:  1/20/2009 Item number:  XHT1184 The masked hunter bug (Reduvius personatus) is a type of assassin bug that is commonly found indoors.  The common name of this insect comes from the fact that the immature stage of the insect (the nymph) covers itself with dust and debris.  These true […]

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