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BACK to UMaine Extension's Homeowner IPM home page
 IPM for Maine Homeowners
Pest Identification Assistance
Link to our Fact Sheets page
Visit our online Photo Gallery
Further Help - Additional Pest Management Resources for Maine homeowners
Pest ID Heading
Where was this critter found?
NOTE: If it was on a plant but you can't find the critter on this page (or if the plant isn't listed here) you may wish to visit Connecticut's Plant Pest Handbook Search Page (searchable by plant).
Inside House / Garage / Shed, etc.:
Jump to section with pests of carpets and clothing fabrics (carpet beetles, clothes moths)
Jump to section with insects and other arthropods that can enter homes via hitching a ride on firewood
Jump to section with some likely insects that might be seen just flying around inside the home.
Jump to section with pests found typically in the kitchen or any food-storage areas
Jump to section with insects that are often spotted on a mattress, sofa or other furniture with upholstery
Jump to section with insects, mites and ticks that may be found on humans
Jump to section with insects and ticks that you might find on your dog, cat, or other pet
Jump to section with insects associated with potted plants (not necessarily harmful to the plants)
Jump to section with critters you might find in your pet's water dish, your sink, bathtub, toilet, etc.
Jump to section with pests found in wet or damp places, such as a basement
Jump to section with pests found in wet or rotten wood, such as carpenter ants
Vegetable Garden:
Jump to section with broccoli, cabbage and other brassica pests
Jump to section with lettuce, endive, escarole and spinach pests
Jump to section with common pests of squash, cucumbers, pumpkins, melons (cucurbits)
Jump to section with common pests of beans
Jump to section with common pests of peppers
Jump to section with common potato and eggplant pests
Jump to section with common sweet corn pests
Jump to section with common tomato pests
Note: UMaine Extension has a publication entitled "Pest Management for the Home Vegetable Garden in Maine" that may be useful to you.
Fruits / Berries - On or Near:
Jump to section with common pests of apples
Link to UMaine Extension's Cranberry site and its listing of the major insect pests of cranberries in Maine
Jump to section with common pests of strawberries
Jump to section with common pests of blueberries
Link to a University of Minnesota Fact Sheet detailing the major insect pests of raspberries
 see also the New England Small Fruit Pest Management Guide (2008-2009) [pdf]
Yard / Landscape Area:
Jump to section with common pests of turf and grass
Jump to section with common pests (and possibly some incidentals) of trees and shrubs
Jump to section listing insect pests likely to be seen on roses
Jump to section with critters you might see in your pool, birdbath, or other open water container
Jump to section listing other landscape flowers, besides roses, and their associated insect pests
VEGETABLES:
Beans: to the top
see also the New England Bean Pest Management Survey Summary [pdf]
Leafhoppers: html || pdf
Click to see a picture
Aphids: html || pdf
Click to see a picture
Mexican Bean Beetle: html (U.Florida)
Click to see a picture
Tarnished Plant Bug: html || pdf
Click to see a picture
see also:
 Canada Fact Sheet: English or Français
Spider Mites: html || pdf
Click to see a picture
Cabbage Looper: html (Univ. of Florida)
Click to see a picture
Corn Earworm: html
Click to see a picture
European Corn Borer: html
Click to see a picture
Broccoli, Cabbage and other Brassicas: to the top
Cabbage Looper: html (Univ. of Florida)
Click to see a picture
Diamondback Moth: html (Univ. of Florida)
Click to see a picture
Imported Cabbageworm: html|| pdf
Click to see a picture
Cucurbits(zucchini/squash, melons, pumpkins, cucumbers): to the top
See also our Powdery Mildew of Cucurbits (Disease) Fact Sheet.
Aphids: html || pdf
Click to see a picture
Spider Mites: html || pdf
Click to see a picture
Squash Vine Borer (though rarely found in Maine): html (Ohio State)
html (Penn State)
Click to see a picture
Striped Cucumber Beetle: html || pdf
Click to see a picture
Lettuce, Endive, Escarole and Spinach: to the top
Cabbage Looper: html (Univ. of Florida)
Click to see a picture
Imported Cabbageworm: html || pdf
Click to see a picture
Leafhoppers: html || pdf
Click to see a picture
Aster leafhopper (U. Minn.) (includes photo)
[on lettuce, celery, carrots, endice, and parsnip]
Peppers: to the top
see also North Carolina State University's "Pests of Pepper" page
Corn Earworm: html
Click to see a picture
Cutworms: html || pdf
Click to see a picture
European Corn Borer: html
Click to see a picture
Tobacco Hornworm: html (K.State)
Click to see a picture
Flea beetles: html (UNH)
html (U.Vermont)
Click to see a picture
Green Peach Aphid: html || pdf
Click to see a picture of various kinds of aphids
Potato Leafhopper: html || pdf (leafhoppers in general)
Click to see a picture
Potatoes and Eggplant: to the top
2009 Late Blight Alert
see also UMaine Extension's "Potato IPM" page.
Colorado Potato Beetle: html || also html
Click to see a picture
European Corn Borer: html
Click to see a picture
Potato Leafhopper: html || pdf (leafhoppers in general)
Click to see a picture
Tomatoes: to the top
2009 Late Blight Alert
see also Late Blight (Cornell link) which is currently (June/July 2009) affecting tomatoes in Maine.
Blister beetles: html (Univ. of Florida)
Click to see a picture
Colorado Potato Beetle: html || also html
Click to see a picture
Cabbage Looper: html (Univ. of Florida)
Click to see a picture
Corn Earworm (synonym Tomato Fruitworm): html
Click to see a picture
Tomato Hornworm: html (Kansas State)
Click to see a picture
Sweet Corn: to the top
Armyworms (general): html || pdf
Click to see a picture
Fall Armyworm: html
Click to see a picture
Corn Earworm: html
Click to see a picture
Cutworms: html || pdf
Click to see a picture
European Corn Borer: html
Click to see a picture
Japanese Beetle: html || pdf
Click for a Japanese Beetle picture
Sap Beetles: html.(Ohio State)
photo link
Seed Corn Maggot: html (Univ. of Minnesota)
photo link
FRUITS / BERRIES:
Apples: to the top
see also UMaine Extension's Apple IPM pages, for pest report newsletters, publications, and more! You may also wish to visit the University of Kentucky's Fact Sheet entitled Controlling Apple Insect Pests
Apple Maggot: html || pdf (Univ. Minnesota) (includes photos)
Codling Moth: html || pdf (Univ. Kentucky) (includes photos)
European Apple Sawfly: html (Cornell) Click to see a picture  
European Red Mite: html || pdf (Univ. Kentucky)
html || pdf (Univ. California) (includes photos)
Japanese Beetle: html || pdf.Click for a Japanese Beetle picture  
Leafhoppers.(White Apple Leafhopper and Rose Leafhopper): html.Click for some photos at Washington State University Rose Leafhopper (WSU)
html.Click for some photos at Washington State University White Apple Leafhopper (WSU)
Leafrollers: Red-banded:html (Cornell) photo link
Oblique-banded: html (Cornell) Click for a picture of an obliquebanded leafroller larva
Leafminers (Spotted Tentiform and Blotch): html (Virginia Tech) (includes photo)
html (UNH) (includes photos + other pests)
Mealybug: html (Washington State) Click to see a picture (more photos at WSU)
Mullein Plant Bug: html (Cornell) (includes photos)
Oriental Fruit Moth: html (Cornell) (photo link for larva)
photo link
Plum Curculio: html || pdf (Univ. Kentucky) Click to see a picture  
Roundheaded Apple Tree Borer: html.(includes photo)
San Jose Scale: html.(Cornell) (includes photo links)
Tarnished Plant Bug: html.(Cornell) (includes photo links) Click to see a picture
Blueberries: to the top
see also UMaine Extension's Wild Blueberry Insect Fact Sheets or, for highbush blueberries, visit Insect Management in Blueberries at the University of Florida.
Blueberry Flea Beetle: html || pdf.(includes photos)
Blueberry Maggot Fly: html || pdf.(includes photos)
Blueberry Spanworm: html || pdf.(includes photos)
Blueberry Thrips: html || pdf.(includes photos)
Yellownecked Caterpillars (relatively rare): html.(NCSU) (includes photos)  
Raspberries: to the top
-see also Cornell University's Raspberry Diagnostic Tool.
Raspberry Cane Borer:
.
html.(Univ. of Minn. Extension)
Has a good description of all of these raspberry pests.
.
Click to see a picture of a the borer itself, which is a kind of beetle. + symptom
Red-Necked Cane Borer: 
photo link
Raspberry Cane Maggot:
photo link
Raspberry Crown Borer:
photo link
Raspberry Fruitworm:
photo link
Sap Beetles (a.k.a. Picnic Beetles):
photo link#1
photo link#2
.
Japanese Beetle: html || pdf
Click for a Japanese Beetle picture
Red-banded Leafroller: html (Cornell)
photo link
Rose Chafer: html (U. Minn.) (includes photo)
Click for a picture of some Rose Chafer adults
Tarnished Plant Bug: html (Canada) (includes photos)
pdf.(Cornell) (includes photos)
Click for a picture of a Tarnished Plant Bug on a raspberry + Click to see a picture of a Tarnished Plant Bug
-see also Cane and Crown Borers (Govt. of Ontario, Canada) (includes photos)
-see also Rednecked and Raspberry Cane Borers: html || pdf (Univ. of Kentucky) (includes photos)
Strawberries: to the top
see also these nice photos [pdf] that are part of the Northeast Vegetable and Strawberry Pest Identification Guide, and be sure to visit UMaine Extension's Strawberry IPM pages as well where you'll find a wealth of information including a strawberry newsletter, strawberry fact sheets, etc.
Leafhoppers: (esp. Potato Leafhopper).Click to see a picture of Potato Leafhopper html || pdf
symptom - photo#1
symptom - photo#2
Leafrollers: Strawberry Leafroller (U. Illinois)
photo link#1
photo link#2
Oblique-banded Leafroller (Cornell)
Click for a picture of an obliquebanded leafroller larva
Red-banded Leafroller (Cornell)
photo link
Sap Beetles: html.(Ohio State) || Strawberry Sap Beetle.Click to see a picture of a Strawberry Sap Beetle via Cornell University.(Univ. of Illinois Extension)
Picnic Beetle
Strawberry Clipper Weevil.(also called Strawberry Bud Weevil): html (Univ. of Georgia)
photo link
Strawberry Root Weevil: html.(UMaine)
html(Oregon State University)
Click to see a picture of a Strawberry Root Weevil adult
Strawberry Rootworm: html.(with illustrated drawings)
html (Univ. of Illinois Extension)
photo link
Tarnished Plant Bug: html (Ontario, Canada)
Click to see a picture of a Tarnished Plant Bug
(injury photo)
Two-spotted Spider Mites: html || pdf
Click to see a picture
Cyclamen mites (sometimes):
html || pdf.(U.Kentucky)
photo link
White Grubs: html.(U. Minnesota)
Click to see a picture
HOUSE / GARAGE / SHED, etc.:
Carpet / Clothes (Fabrics): to the top
Carpet Beetles (and larvae): html || pdf
Clothes Moths (as well as Carpet Beetles): pdf.(U.Maryland) (includes photos)

Just flying around (perhaps towards a light source, from room to room, or seemingly in a random fashion) to the top
Bark Beetles: html || pdf
photo link
Blow Flies (Iowa State)
photo link
Carpenter Ant Queen (or smaller, male drone) -- See also 'Flying Ants' html.|| pdf
Click for a photo of a winged Carpenter Ant queen
additional photo
(via UMN)
Clothes Moths:  html || pdf (Univ. of Kentucky)
photo link
Cluster Flies: html || pdf
photo link
Crane Flies (Texas A&M) 
Click for a crane fly photo
Drain Flies (Ohio State)
photo link
Flesh Flies (Iowa State)
photo link
Flying Ants (Colorado State - includes photos) -- See also the Ants section of our Fact Sheets
Fruit Flies (Iowa State)
photo link
Fungus Gnats (Ohio State)
photo link
House Flies.(U.Florida)
-- See also Cluster Flies, as they are often mistaken for House Flies.
Click for a house fly photo
Indian Mealmoth (Penn State)
photo link
Western Conifer Seed Bug.(Penn State) (resembles a wasp in both appearance and in sound while buzzing/flying around a room)
Click for a western confier seed bug photo
Yellowjackets || Wasps.|| Hornets: html || pdf || y En Español (U.KY)
Baldfaced Hornets (Iowa State Univ)
Kitchen / Food Storage Areas: to the top
Ants: See the 'Ants' section of our Fact Sheets page
Cockroaches: html || pdf
Click to see a picture
Flour Beetles: html || pdf
Click to see a picture
Fruit Flies: html.(IA State)
photo link
Grain Beetles: html || pdf
Click to see a picture
House Flies: html.(U.Florida)
Click to see a picture
Indian Mealmoth: html.(Penn State)
photo link
Larder Beetles: html || pdf
Click to see a picture
Lesser Mealworms: html || pdf
Click to see a picture

Mattress / Sofa (or most any Furniture with Upholstery): to the top
Bed Bugs: html || pdf
html (Cornell - includes photos)
html.(U. Kentucky) En Español (includes photos)
Fleas: html (US FDA) (life cycle: pdf)
html (U.Florida) (includes photos)
Head Lice: html || pdf
photo link
Masked Hunter: html (U. Minnesota)
Click to see a picture of an adult Masked Hunter - a kind of assassin bug
Wet or Damp Areas (e.g. basement, garage, etc.): to the top
Crickets (often in basements): html.(U.Florida)
photo link
Fungus Gnats: html (Ohio State)
photo link
Horsehair Worm: html (Iowa State Univ.)
photo link
Mosquitoes: html.(ME Forest Service)
Click for a picture of one of many mosquitoes found in Maine (adult).
Click for a picture of one of many mosquitoes found in Maine.(larvae)
Springtails: html (Univ. of Arizona)
html (wikipedia)
Click to see a picture
Booklice (psocids): html || pdf.(Penn State)
photo link
Wet or Rotten Wood: to the top
Carpenter Ants: html || pdf || Click to see a picture of some Carpenter Ants(worker) || Click for a photo of a winged Carpenter Ant queen(winged queen)
Earwigs: html || pdf
Click to see a picture of an earwig
Eyed Click Beetle (Eyed Elator): html.(Cornell)
Click to see a picture of an Eyed Click Beetle
Centipedes || Millipedes Click to see a picture|| Sowbugs/Pillbugs: pdf (University of Maryland) (includes photos)
Termites: [Very rare in Maine; mostly occur only in pocket areas in some southern and coastal locations] html || pdf (Ohio State)
Termites - click for a larger and an expanded view
Potted Plants: to the top
[If either of these is abundant, it is likely due to overwatering.]
Fungus Gnats: html (Ohio State)
photo link
Springtails: html (Univ. of Arizona)
html (wikipedia)
Click to see a picture of Springtails

On Pets (cats, dogs, birds, etc.): to the top
Fleas: html (US FDA) (life cycle: pdf)
html (U.Florida) (includes photos)
Larder Beetles (in or near their food or food dishes): html || pdf.Click to see a picture
Mealworms (in areas with dry dog or cat food): html || pdf
html.Click to see a picture via the University of Guelph(Univ. of Guelph)
Ticks: html.|| pdf.Click to see a picture
see also the Maine Medical Center's Ticks in Maine page for Lyme disease information, tips and photos. They will also identify ticks for you.
On a Person / People: to the top
see also.Fabric Pests [pdf] (University of Maryland)
Bed Bugs: html || pdf
html (Cornell - includes photos)
html(U. Kentucky) En Español (includes photos)
Fleas: html (US FDA) (life cycle: pdf)
html (U.Florida) (includes photos)
Head Lice: html || pdf
photo link
Parasitic Mites: html || pdf (U.KY) (includes photos)
Ticks: html.|| pdf
Click to see a picture
see also the Maine Medical Center's Ticks in Maine page for Lyme disease information, tips and photos. They will also identify ticks.for you.
Firewood: to the top
see also the Maine Forest Service's Insects From Firewood publication.
Bark Beetles: html || pdf
 photo link
Carpenter Ants: html || pdf || Click to see a picture of some Carpenter Ants(worker) || Click for a photo of a winged Carpenter Ant queen(winged queen)
Centipedes: pdf (University of Maryland) (includes photos)
Earwigs: html || pdf
Click to see a picture of an earwig
also pdf.(U.Maryland) (includes photo)
Emerald Ash Borer (invasive pest!): html.(USDA)
Don't transport firewood!
 The Maine Forest Service urges campers to buy firewood at their camping destination, rather than carrying it with them, to help curtail the spread of this forest-threatening pest. 
Gypsy Moth (egg masses and/or larvae): html || pdf
Click for a picture showing Gypsy Moth larvae and adults
Horntails (wasp-like in appearance): html (Cornell)
Click for a picture of a Horntail
Longhorned Beetles: html.(Iowa State Univ)
photo link
Asian Longhorned Beetle (invasive pest!) (Maine Dept. of Agriculture) (includes photos) || Plus ID Help: ALB or Not ALB? (Cornell)
Metallic Wood-Boring Beetles: html (U.Minnesota)
photo link
Millipedes: pdf (University of Maryland) (includes photos) Click to see a picture
Powderpost Beetles: html || pdf
Click to see a picture
Sowbugs/Pillbugs: pdf (University of Maryland) (includes photos)
SPIDERS:
 
You can find many
additional spider photos
at BugGuide.net
html || pdf (UMaine) Click to see a picture of a jumping spider
html.(Penn State)
NOTE: There are many spiders that homeowners mistakenly suspect to be the Brown Recluse [follow link for Ohio State Univ. Fact Sheet]. Misdiagnoses are thus very common. (US Distribution Map for Brown Recluse)
Sink, Tub, Pet Dish, Toilet, etc.: to the top
Centipedes || Millipedes || Sowbugs/Pillbugs: pdf (University of Maryland) (includes photos)
Horsehair Worm: html (Iowa State Univ.)
photo link
Larder Beetles (from dry pet food primarily): html || pdf
Click to see a picture
Mealworms (in areas with dry dog or cat food): html || pdf
html.Click to see a picture via the University of Guelph(Univ. of Guelph)
YARD / LANDSCAPE:
Lawn / Grassy Area: to the top
Ants: See the 'Ants' section of our Fact Sheets page
Armyworms: html || pdf
Click to see a picture
Chinch Bugs: html || pdf
photo link
Cutworms: html || pdf
Click to see a picture
Japanese Beetle: html || pdf
html || pdf.(Ohio State Univ.)
Click for a picture of a Japanese Beetle adult
Mosquitoes: html.(ME Forest Service)
Click for a picture of one of many mosquitoes found in Maine (adult).
Click for a picture of one of many mosquitoes found in Maine.(larvae)
Sod Webworm: html || pdf.(Penn State) (includes photos)
Wooly Bear Caterpillars: Yellow: html.(U.Missouri)
Banded (black & orange): html.(U.Missouri)
photo link
photo link
WHITE GRUBS (a complex of several species of Scarab beetles that all look very similar to one another): html.(U. Illinois) || pdf.(Penn State)
(includes photos)
Click to see a picture
(additional photo)
Maine's most common beetle grubs (Family Scarabidae) that are collectively referred to as 'White Grubs':
1). May and June Beetle grubs:
(Phyllophaga spp.)		 html.(U. Maryland) photo link
2). Asiatic Garden Beetle grubs: Click for a photo of the larval stage (grub) of Asiatic Garden Beetle html (U.Vermont)
html (Purdue) (includes photos)
3). European Chafer grubs: html.(Cornell) (illustrations included)
html (Purdue) (color photos included)
4). Japanese Beetle grubs: html || pdf.(Ohio State Univ.) (illustrations included)
Pool (fresh water), Pond, Open Water Container, etc: to the top
Giant Water Bug (also attracted to lights): html (edu webs) (includes photos)
Horsehair Worm: html (Iowa State Univ.)
photo link
Mosquito Larvae: html (Cornell)
photo link
Water Boatmen: html (Texas A&M)
photo link
Water Striders: html (Texas A&M)
photo link
Roses: to the top
see also.Insect Pests of Roses by the University of Minnesota Extension.
see also our Black Spot of Rose (Disease) Fact Sheet.
Aphids: html || pdf
Click to see a picture of various kinds of aphids
Fuller Rose Beetle (weevil): html (U.Florida) (includes photos)
Japanese Beetle: html || pdf
Click for a picture of a Japanese Beetle adult
Leafminers: html.(U.Florida) (includes photos)
Obliquebanded Leafroller: html (Cornell)
Click for a picture of an obliquebanded leafroller larva
Rose Chafer: html (U.Minnesota) (includes photo)
Click for a picture of some Rose Chafer adults
Rose Leafhopper: html.(Washington State Univ.)
Click for some photos at Washington State University
leaf damage
Sawflies (larvae): html (U.Minnesota) (includes photos)
Slugs: html || pdf
Click to see a picture
Spider Mites (including Two-spotted): html || pdf
Click to see a picture
Stem Borers: html (U.Minnesota) (includes photos)
Thrips: html || pdf
photo link #1
photo link #2
other Flowers (alphabetical): to the top
Asters
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
Key Diseases:
Powdery mildew
and rust
Leafminers: html.(U.Florida) (includes photos)
Tarnished Plant Bug: html || pdf
Click to see a picture of a Tarnished Plant Bug
see also.
 Canada Fact Sheet: English or Français
Thrips: html || pdf
photo link #1
photo link #2
Achillea
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
(Yarrows)
 Leafhoppers: html || pdf
Click to see a picture
Key Diseases:
Powdery mildew, downy mildew, rust, & rhizoctonia stem rot
Two-spotted Spider Mites: html || pdf
Click to see a picture
Thrips: html|| pdf
photo link #1
photo link #2
Bleeding Heart
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
Bleeding Heart - click for a larger and an expanded view
Key Disease: Crown rot (if soil is too wet)
Calendula
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
(Pot Marigolds)
 Tarnished Plant Bug: html || pdf
Click to see a picture of a Tarnished Plant Bug
see also.
 Canada Fact Sheet: English or Français
Canna
 Japanese Beetle: html || pdf
Click for a Japanese Beetle picture
(Canna Lilies)
 Slugs: html || pdf
Click to see a picture
Key Diseases: Bud rot (Xanthomonas), Canna rust, and certain viruses, some of which are Canna-specific.
Celosia
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
(Cockscombs)
 Two-spotted Spider Mites: html || pdf
Click to see a picture
Chrysanthemum
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
Key Diseases:
Aster yellows, botrytis, leaf spots, viruses, and wilts
Asiatic Garden Beetles: html (U.Vermont)
Click for a photo of the larval stage (grub) of Asiatic Garden Beetle(grub)...
html (Purdue) (includes photos)
Cyclamen mites: html || pdf.(U.KY)
photo link
Leafrollers: html || pdf (U.KY) (includes photo)
Cutworms: html || pdf
Click to see a picture
Thrips: html || pdf
photo link #1
photo link #2
Whiteflies: html || pdf (U.Missouri)
html (U.Guelph) (includes photo)
Dahlia
 Cyclamen mites: html || pdf.(U.KY)
photo link
Key Diseases:
Aster yellows, bacterial stem rot, botrytis and wilt diseases
Japanese Beetle: html || pdf
Click for a Japanese Beetle picture
Leafhoppers: html|| pdf
Click to see a picture
Tarnished Plant Bug: html || pdf
Click to see a picture of a Tarnished Plant Bug
see also.
 Canada Fact Sheet: English or Français
Two-spotted Spider Mites: html || pdf
Click to see a picture
Delphinium
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
(Larkspurs)
 Cyclamen mites: html || pdf.(U.KY)
photo link
Key Diseases:
Stem rot and
powdery mildew
Slugs: html || pdf
Click to see a picture
Two-spotted Spider Mites: html || pdf
Click to see a picture
Echinacea
 Aster Leafhopper: html.(U. Minnesota) (includes photo)
  Japanese Beetle: html || pdf
Click for a Japanese Beetle picture
Key Disease: Aster yellows (Aster Leafhopper is a vector for aster yellows disease)
Gladiolus
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
Key Diseases:
Corm rot, wilt diseases, viruses, bacterial leaf blight
Spider Mites: html || pdf
Click to see a picture
Gladiolus Thrips: html.(U.Florida)(includes photos)
html.|| pdf (thrips in general)
Wireworms: html || pdf.also.html
Click to see a picture
Gomphrena
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
(Globe Amaranths)
 Spider Mites: html|| pdf
Click to see a picture
Thrips: html || pdf
photo link #1
photo link #2
Helianthus
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
(Sunflowers)
 Cucumber Beetles: html || pdf (VA Tech) (illustrations)
Key Diseases:
Leafspots, powdery mildew, and rust
Striped: html || pdf
Click to see a picture & link..
European Corn Borer: html
Click to see a picture
Leafminers: html.(U.Florida) (includes photos)
Tarnished Plant Bug: html || pdf
Click to see a picture of a Tarnished Plant Bug
see also.
 Canada Fact Sheet: English or Français
Helichrysum
 Leafhoppers: html || pdf
Click to see a picture
(Strawflowers/Everlastings)
 Aster leafhopper (U. Minn.) (includes photo)
Key Diseases: Aster yellows and Verticillium wilt
Liatris
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
Key Diseases:
Leafspots, powdery mildew, rust, and root knot nematodes
Thrips: html || pdf
photo link #1
photo link #2
Whiteflies: html || pdf (U.Missouri)
html (U.Guelph) (includes photo)
Lilies.("true Lilies")
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
Key Diseases:
Botrytis
Lily Mosaic Virus
Lily Leaf Beetle: html (UMaine)
html (UMass)
pdf (U.Rhode Is.)
Click to see a picture of a Lily Leaf Beetle, plus some eggs
Marigolds
 Aster Leafhopper: html.(U. Minnesota) (includes photo)
Key Diseases:
Aster yellows and botrytis
Thrips: html || pdf
photo link #1
photo link #2
Two-spotted Spider Mites: html || pdf
Click to see a picture
Peony
 Flea beetles: html (UNH)
Click to see a picture
Key Diseases:
[Diseases are generally quite rare, esp. in small plantings] Botrytis (paeoniae and cinerea), iron chorosis, leaf spots, root rots & wilts
html (U.Vermont)
Rose Chafer: html (U.Minnesota)
Click for a picture of some Rose Chafer adults
Thrips: html || pdf
photo link #1
photo link #2
 
Phlox
 Spider Mites: html || pdf
Click to see a picture
Key Diseases:
Leaf spots, wilt diseases and powdery mildew (U. Minnesota)
Thrips: html || pdf
photo link #1
photo link #2
 
Platycodon
(Chinese Bellflower / Balloon Flower)
 Thrips: html || pdf
photo link #1
photo link #2
Key Diseases: Root rots
  
Rudbeckia
 Cucumber Beetles: html || pdf (VA Tech) (illustrations)
(Coneflowers / Black-eyed Susan)
 Thrips: html || pdf
photo link #1
Key Diseases: Leaf spots
photo link #2
Salvia.(Sage)
 Tarnished Plant Bug:
Canada Fact Sheet: 
 html || pdf
English or Français
Click to see a picture of a Tarnished Plant Bug
Key Diseases (Cornell)
 Two-spotted Spider Mites: html || pdf
Click to see a picture
Whiteflies: html || pdf (U.Missouri)
html (U.Guelph) (includes photo)
Snapdragons
 Tarnished Plant Bug:
Canada Fact Sheet:
 html || pdf
English or Français
Click to see a picture of a Tarnished Plant Bug
Key Diseases:
Rust & Verticillium wilt
Thrips: html || pdf
photo link #1
photo link #2
Statice.(Limonium)
 Aster Leafhopper: html.(U. Minnesota) (includes photo)
Key Diseases:
Aster yellows, botrytis, crown rots, flower blight, leaf spots
Cutworms: html || pdf
Click to see a picture
Loopers / Inchworms: html (USGS) (with numerous photos)
Spider Mites: html || pdf
Click to see a picture
Tulips
 Tulips are quite hardy, but some insects (and slugs) do show up from time to time and can become problematic.
Key Diseases
[Two good Choices]
Univ. of Michigan
Univ. Connecticut
 Aphids: html || pdf
Click to see a picture of various kinds of aphids
Japanese Beetle: html || pdf
Click for a Japanese Beetle picture
Leafrollers: html.(Univ. of Illinois)
Click for a leafroller that happened to be found on a tulip
Slugs: html || pdf
Click to see a picture
Wireworms: html || pdf.also.html
Click to see a picture
Zinnia
 Japanese Beetle: html || pdf
Click for a Japanese Beetle picture
Key Diseases:
Alternaria leaf spot, bacterial leaf spot, and powdery mildew
Stalk borer (Papaipema nebris) (U.Connecticut) (scroll to bottom after clicking)
Tarnished Plant Bug: html || pdf
Click to see a picture of a Tarnished Plant Bug
see also.
 Canada Fact Sheet: English or Français
Trees / Shrubs: to the top
see also the Maine State Forest Service's list of Insect & Disease Fact Sheets.
For apple trees, see our Apples section above.
Asian Longhorned Beetle: see listing below for 'Longhorned Beetles'
Carpenter Ants: html || pdf ||Click to see a picture of some Carpenter Ants(worker) || Click for a photo of a winged Carpenter Ant queen(winged queen)
Caterpillars: html (USGS) (categorized by family)
Elm Sawfly (Larva): html.(U. of Missouri)
photo link
Emerald Ash Borer: html.(USDA) Recently detected in western NY! (Cattaraugus County).(Press Release)
Maine Forest Service reminder:
Don't transport firewood!
photo link
European Pine Sawfly: html (Ohio State) (includes photos)
Geometer Moths (inchworm adults): html (wikipedia) (includes photos)
Gypsy Moth: html || pdf
also pdf.(U.Maryland)
Click for a picture showing Gypsy Moth larvae and adults
Hemlock Woolly Adelgid: html (USDA Forest Service) (Photo Gallery included)
Horntails (wasp-like in appearance): html.(Cornell)
Click for a picture of a Horntail
Inchworms (Loopers or Geometers): html (USGS) (with numerous photos)
Leaf Beetles: html (wikipedia) (includes photos)
Viburnum Leaf BeetleClick to see a picture (only attacks Viburnums, such as highbush cranberry) 
Longhorned Beetles: html (Iowa State Univ) (photo link)
Asian Longhorned Beetle (Maine Dept. of Agriculture) (includes photo) (Bangor TV5 News)
Plus.ID Help: ALB or Not ALB? (Cornell)
Note: The invasive Asian Longhorned Beetle has not yet been confirmed in Maine. The nearest confirmed infestation was found in Worcester, MA.
Metallic Wood-Boring Beetles: html.(U.Minn)
photo link
Slug Caterpillars: html (USGS) (with numerous photos)
Tent Caterpillars (Forest & Eastern): html || pdf
Click for side-by-side photos of both Forest Tent Caterpillars as well as an Eastern Tent Caterpillar
Viburnum Leaf Beetle (only attacks Viburnums, such as highbush cranberry) Click to see a picture (photo showing larvae & defoliation damage to an entire row of highbush cranberry shrubs)
Western Conifer Seed Bug: html.(Penn State)
Click to see a picture
White Pine Weevil: html || pdf
photo link
Woolly Bear (Tiger Moth) Caterpillars: Yellow: html.(U.Missouri)
Banded (black & red-orange): html.(U.Missouri)
photo link
photo link
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