University of Minnesota Extension

Extension > Current insect issues

Current Insects: May

Be on the watch for these insects in May

Insects in and around homes

• Ants

    °  carpenter

    °  cornfield, pavement, pharaoh, yellow, thief, odorous house, false honey, field, acrobat

    °  swarmers: carpenter, pavement, yellow, false honey ant

•  Stored product insects

    °  Indianmeal moths

    °  flour beetles, sawtoothed grain beetles, cigarette beetles, drugstore beetles etc.

•  Cockroaches

    °  German, brownbanded, American, Oriental

    °  woods (may be found indoors or outside in wooded areas)

•  Wasps

•  House centipedes

•  Spiders

•  Larder beetles

•  Springtails

•  Psocids

•  Clover mites

•  Millipedes

•  Sowbugs

•  Pseudoscorpions

•  Carpet beetles

•  Multicolored Asian lady beetles

•  Boxelder bugs

•  Houseplant insects

Insects in gardens and yards

(Note: Because of the late spring, expect insect pests 2 - 4 weeks later than normal.  E.g. forest tent caterpillars normally hatch from early to mid May.  Expect them mid to late May.

Gardens

•  Andrenid bees

•  Asparagus beetles (common and spotted asparagus beetles)

•  Cabbageworms

•  Codling moths 

•  Columbine sawflies

•  Cutworms

  Flea beetles

•  Fourlined plant bugs

•  Iris borers

•  Plum cuculios

•  Root maggots (onion and cabbage)

•  Slugs

•  Spinach leafminers

•  Spittlebugs

•  Squash bugs

Yards

•  Ants in lawns

•  Aphids 

•  Ash leafcurl aphids

•  Ash plant bugs

•  Ash sawflies

•  Birch leafminers

•  Cankerworms

•  Dogwood sawflies

•  Eastern tent caterpillars

•  Elm leaf beetles

  Emerald ash borers (currently only confirmed in Hennepin, Ramsey, Houston and Winona counties)

  European elm flea weevil

•  European pine sawflies

  Forest tent caterpillars

•  Galls, insects and mites

•  Honeylocust plant bugs

•  Imported willow leaf beetles

•  Lace bugs

•  Introduced pine sawflies

•  Maple petiole borers

•  Oystershell scales

•  Pine needle scales

•  Roseslugs

•  Spiny elm caterpillars

Insects that bite or sting

•  Blacklegged ticks (formerly called deer ticks)

•  American dog ticks (also called wood ticks)

•  Bed bugs

•  Head lice

•  Fleas

•  Mosquitoes (starting late May or early June)

Current Insects: April

Current Insects: March

Be on the watch for these insects in March

Insects in and around homes

•  Boxelder bugs

•  Multicolored Asian lady beetles

•  Cluster fly

•  Hackberry psyllids

•  Western conifer seed bugs

•  Masked hunters

• Ants

    °  carpenter

    °  pavement, pharaoh, yellow, thief, odorous house, acrobat

•  Fruit flies

•  Moth flies

•  Phorid flies

•  Fungus gnats

•  Spiders

•  Stored product insects

    °  Indianmeal moths

    °  flour beetles, sawtoothed grain beetles, cigarette beetles, drugstore beetles etc.

•  Cockroaches: German, brownbanded, American, Oriental

•  Springtails

•  House centipedes

•  Millipedes

•  Sowbugs

•  Pseudoscorpions

•  Carpet beetles

•  Houseplant insects

•  Longhorned beetles

•  Metallic wood boring beetles

Insects in the Landscape

Snow fleas

Winter cutworms

Insects that bite or sting

•  Bed bugs

•  Head lice

•  Fleas

Blacklegged ticks (formerly called deer ticks), they can be active when temps are in the 30o's F

Current Insects: February

Be on the watch for these insects in February

Insects in and around homes

•  Bed bugs

• Ants

    °  carpenter

    °  pavement, pharaoh, yellow, thief, odorous house, acrobat

•  Stored product insects

    °  Indianmeal moths

    °  flour beetles, sawtoothed grain beetles, cigarette beetles, drugstore beetles etc.

•  Cockroaches: German, brownbanded, American, Oriental

•  Fruit flies

•  Moth flies

•  Phorid flies

•  Fungus gnats

•  Boxelder bugs

•  Multicolored Asian lady beetles

•  Cluster flies

•  Hackberry psyllids

•  Western conifer seed bugs

•  Masked hunters

•  Spiders

•  Springtails

•  House centipedes

•  Pseudoscorpions

•  Carpet beetles

•  Houseplant insects

•  Longhorned beetles

•  Metallic wood boring beetles

Insects that bite or sting

•  Blacklegged ticks - formerly called deer ticks (can be active in temperatures as low as the low to mid 30's F)

•  Bed bugs

•  Head lice

•  Fleas

Current Insects: January

Be on the watch for these insects in January

Insects in and around homes

•  Bed bugs

• Ants

    °  carpenter

    °  pavement, pharaoh, yellow, thief, odorous house, acrobat

•  Stored product insects

    °  Indianmeal moths

    °  flour beetles, sawtoothed grain beetles, cigarette beetles, drugstore beetles etc.

•  Cockroaches: German, brownbanded, American, Oriental

•  Fruit flies

•  Moth flies

•  Phorid flies

•  Fungus gnats

•  Boxelder bugs

•  Multicolored Asian lady beetles

•  Cluster flies

•  Hackberry psyllids

•  Western conifer seed bugs

•  Masked hunters

•  Spiders

•  Springtails

•  House centipedes

•  Pseudoscorpions

•  Carpet beetles

•  Houseplant insects

•  Longhorned beetles

•  Metallic wood boring beetles

Insects that bite or sting

•  Blacklegged ticks - formerly called deer ticks (can be active in temperatures as low as the low to mid 30's F)

•  Bed bugs

•  Head lice

•  Fleas

Current Insects: December

Be on the watch for these insects in December

Insects in and around homes

•  Bed bugs

• Ants

    °  carpenter

    °  pavement, pharaoh, yellow, thief, odorous house, acrobat

•  Stored product insects

    °  Indianmeal moths

    °  flour beetles, sawtoothed grain beetles, cigarette beetles, drugstore beetles etc.

•  Cockroaches: German, brownbanded, American, Oriental

•  Fruit flies

•  Moth flies

•  Phorid flies

•  Fungus gnats

•  Boxelder bugs

•  Multicolored Asian lady beetles

•  Cluster flies

•  Hackberry psyllids

•  Western conifer seed bugs

•  Masked hunters

•  Spiders

•  Springtails

•  House centipedes

•  Pseudoscorpions

•  Carpet beetles

•  Houseplant insects

•  Longhorned beetles

•  Metallic wood boring beetles

Insects that bite or sting

•  Blacklegged ticks - formerly called deer ticks (can be active in temperatures as low as the low to mid 30's F)

•  Bed bugs

•  Head lice

•  Fleas

Current Insects: November

Be on the watch for these insects in November

Insects in and around homes

•  Boxelder bugs

•  Multicolored Asian lady beetles

•  Cluster flies

•  Millipedes

•  Sowbugs

•  Hackberry psyllids

•  Western conifer seed bugs

•  Masked hunters

• Ants

    °  carpenter

    °  pavement, pharaoh, yellow, thief, odorous house, acrobat

•  Social wasps (i.e. yellowjackets, paper wasps)

•  Fruit flies

•  Moth flies

•  Phorid flies

•  Fungus gnats

• Spiders

•  Stored product insects

    °  Indianmeal moths

    °  flour beetles, sawtoothed grain beetles, cigarette beetles, drugstore beetles etc.

•  Cockroaches: German, brownbanded, American, Oriental

•  Springtails

•  House centipedes

•  Pseudoscorpions

•  Carpet beetles

•  Houseplant insects

•  Longhorned beetles

•  Metallic wood boring beetles

Insects that bite or sting

•  Blacklegged ticks - formerly called deer ticks (can be active in temperatures as low as the low to mid 30's F)

•  Bed bugs

•  Head lice

•  Fleas

Curent Insects: October

Be on the watch for these insects in October

Insects in and around homes

•  Boxelder bugs

•  Multicolored Asian lady beetles

•  Social wasps (i.e. yellowjackets, paper wasps)

•  Spiders

•  Stored product insects

    °  Indianmeal moths

    °  flour beetles, sawtoothed grain beetles, cigarette beetles, drugstore beetles etc.

•  Fruit flies

•  Cluster flies

•  Western conifer seed bugs

•  Millipedes

•  Sowbugs

•  Hackberry psyllids

•  Masked hunters

• Ants

    °  carpenter

    °  cornfield, pavement, pharaoh, yellow, thief, odorous house, field, acrobat,

Cockroaches: German, brownbanded, American, Oriental

•  Blow flies

•  Springtails

•  House centipede

•  Pseudoscorpions

•  Carpet beetles

•  Houseplant insects

Insects in gardens and yards

Gardens

•  Apple maggot damage

•  Iris borers

•  Slugs

•  Tobacco budworms (also known as geranium budworms)

Yards

•  Birch catkin feeders

Insects that bite or sting

•  Blacklegged ticks - formerly called deer ticks (can be active in temperatures as low as the low to mid 30's F)

•  Bed bugs

•  Head lice

•  Fleas

Current Insects: September

Be on the watch for these insects in September

Insects in and around homes

Insects in gardens and yards

Gardens

Yards

Insects that bite or sting

Current Insects: August

Be on the watch for these insects in August

Insects in and around homes

Insects in gardens and yards

Gardens

Yards

Insects that bite or sting

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