Lawn, Tree and Ornamental Critters
See also our photo collection of Lawn, Tree and Ornamental Pests and Critters
Allegheny Mound Ant- American Dog Tick
- Ants
- Aphids
- Apple-Boring Beetles (Cornell)
- Armyworms
- Asian Longhorned Beetle (invasive) (no confirmed sightings in Maine as yet)
- Asiatic Garden Beetle
- Asparagus Beetles (Common and Spotted)
- Aster Leafhopper
- Azalea Lace Bug
- Azalea Leafminer
- Bald-faced Hornets
- Bark Beetles
- Bean Leaf Beetle
- Black Flies
- Black-legged Tick/Deer Tick
- Black Vine Weevil
- Blister Beetles
- Blow Flies and Flesh Flies
- Blueberry Insect Pests (specific to Maine low-bush blueberry):
- Blueberry Flea Beetle
- Blueberry Maggot
- Blueberry Spanworm
- Blueberry Thrips
- Red-striped Fireworm
- Spotted-wing Drosophila (invasive) (see Fruit Flies)
- Boxelder Bugs (BugGuide.net)
- Browntail Moth/Caterpillar
- Cabbage Looper
- Cabbage Maggot
- Cabbageworm/Imported Cabbageworm
- Candy-striped Leafhopper
- Carpenter Ants
- Caterpillars
- Chinch Bugs
- Click Beetles
- Colorado Potato Beetle
- Common Asparagus Beetle
- Common Stalk Borer
- Corn Earworm
- Corn Rootworm (Northern, Western & Southern)
- Crickets
- Cucumber Beetle (Striped Cucumber Beetle)
- Curve-toothed Geometer (BugGuide.net)
- Cutworms
- Deer Flies
- Deer Tick
- Diamondback Moth
- Diamondback Soil Centipede
- Dogwood Sawfly (Iowa State Univ Extension) (additional images, including the adult stage: BugGuide.net)
- Dog Tick
- Drain Flies (also called Moth Flies) (around sewage or other wet areas)
- Earwigs
- Eastern Ash Bark Beetle
- Eastern Boxelder Bugs (BugGuide.net)
- Eastern Hemlock Looper
- Eastern Subterranean Termites (PDF) (Cornell University) — Rare in Maine; mostly occur only in pocket areas in some southern and coastal locations.
- Eastern Tent Caterpillars
- Elm Sawfly
- Emerald Ash Borer (invasive)
- Euonymus Caterpillars
- European Chafer
- European Corn Borer
- European Crane Fly (invasive)
- European Hornet
- European Pine Sawfly
- European Red Ant / European Fire Ant (invasive)
- European Red Mite
- Eyed Click Beetle (Eyed Elater)
- Fall Armyworm
- Fall Webworm
- Fishing Spider
- Flea Beetles
- Flesh Flies and Blow Flies
- Flower Flies (also called Hover Flies or Syrphid Flies)
- Forest Pests (Maine Forest Service)
- Forest Tent Caterpillars
- Fruit Flies (includes information about Spotted-wing Drosophila)
- Fuller Rose Beetle (weevil) (Univ. of Florida)
- Garden Spider (Penn State) see also Ohio DNR
- Giant Water Bug
- Golden Ground Beetle (metallic green but with gold reflections) (BugGuide.net)
- Golden Paper Wasps (BugGuide.net)
- Green Peach Aphids
- Groundhog (Woodchuck) Tick
- Grubs (White Grubs)
- G**** Moth — find it now by its new name of Spongy Moth
- Hemlock Looper
- Hemlock Woolly Adelgid (invasive)
- Hickory Tussock Caterpillar
- Honey bees (eXtension.org)
- Hornets/Wasps/Yellowjackets
- Horntails
- Hornworms
- Horse Flies
- Horsehair Worm
- Hover Flies (also called Flower Flies or Syrphid Flies)
- Hummingbird Clearwing Moths (or Hummingbird Hawk-moths) (USGS) | Caterpillar stage (University of Missouri)
- Imported Cabbageworm
- Inchworms (Loopers/Geometers) (USGS) | See also Caterpillars of Eastern Forests (PDF) (pp 69-85) (US Forest Service)
- Introduced Pine Sawfly
- Japanese Beetles — includes a video: How to Get Rid of Japanese Beetles
- Jumping Spiders (University of Arizona)
- Jumping Worms (Maine’s Department of ACF would like to emphasize that this worm is relatively widespread at this point–13 counties as of August 2023–so please do not panic if you believe or know that you have some on your property.)
- Jumping/Snake (Amynthas) Worms in Maine (Maine Dept of ACF)
- Frequently Asked Questions (UMass Extension)
- If you believe you’ve found a Jumping Worm in Maine: (link recently corrected) Jumping Worm(s) Report Form (Maine Dept of ACF)
- June Beetles
- Katydids (also known as long-horned grasshoppers)
- Lace Bugs
- Lacewings (Virginia Tech)
- Ladybugs / Ladybird Beetles (Multicolored Asian Lady Beetle)
- Larger Yellow Ants
- Laugher (Charadra deridens)
- Leafhoppers – see also:
- Aster Leafhopper
- Candy-striped Leafhopper
- Potato Leafhopper (part of UMaine Extension’s Potato IPM Program)
- Leafminers (University of Florida)
- Lily Leaf Beetle
- Longhorned Beetles (and Roundheaded Borers) (Iowa State Univ.) — see also listing for Asian Longhorned Beetle
- Loopers (USGS) | See also Caterpillars of Eastern Forests (PDF) (pp 69-85) (US Forest Service)
- Luna Moth (and caterpillar)
- May/June Beetles
- Mayflies (Michigan State Univ. Extension)
- Mealybugs (greenhouse, nursery and landscape plants) (NC State Extension)
- Metallic Wood-Boring Beetle (Univ. of Minnesota Extension)
- Mexican Bean Beetle
- Monarch Butterfly and Caterpillar
- Mosquitoes (Maine Forest Service) see also:
- Mosquito Biology (UMaine Extension)
- Mosquito Management (UMaine Extension)
- Insect Repellents (UMaine Extension)
- West Nile Virus (CDC)
- Preventing Eastern Equine Encephalitis (EEE) Virus in Maine
- Moth Flies (also called Drain Flies)
- Moths (The Butterflies and Moths of North America project)
- Mouse Tick
- Mullein Plant Bug (Cornell)
- Multicolored Asian Lady Beetle
- Northeastern Pine Sawyer Beetle
- Northern Corn Rootworm (includes Western & Southern also) (Univ. of Illinois)
- Nursery Web Spider
- Oblique-banded Leafroller (Cornell)
- Onion Maggots
- Onion Thrips (Cornell)
- Painted Lady Butterfly
- Paper Wasps/Yellowjackets/Hornets
- Pavement Ants
- Pennsylvania Wood Roach
- Picnic Beetles (Univ. of Minnesota Extension)
- Pine Needle Scale (US Forest Service)
- Polyphemus Moth (Butterflies and Moths of North America Project)
- Pond Skaters (Water Striders)
- Potato (and other) Aphids (part of UMaine Extension’s Potato IPM Program)
- Potato Leafhopper (part of UMaine Extension’s Potato IPM Program)
- Powderpost Beetles
- Praying Mantids (Univ. of Kentucky)
- Predaceous Diving Beetles (BugGuide.net)
- Raspberry Insect Pests:
- Raspberry Cane Borer (PDF) (Univ. of New Hampshire Cooperative Extension)
- Raspberry Cane Maggot (PDF) (Univ. of New Hampshire Cooperative Extension)
- Raspberry Crown Borer (Univ. of New Hampshire Cooperative Extension)
- Raspberry Fruitworm (Univ. of Minnesota Extension) | Photo of Raspberry Fruitworm Adult (Beetle) (scroll to bottom of page once there) (Univ. of New Hampshire Cooperative Extension)
- Raspberry Weevil
- Spotted-wing Drosophila (see Fruit Flies)
- Red-banded Leafroller (Cornell)
- Redheaded Flea Beetle (part of UMaine Extension’s Cranberry IPM Program)
- Redhumped Caterpillars (Washington State University)
- Rose Chafer
- Rose Leafhopper (Univ. of Washington)
- Rose Sawflies (three foliage-feeding species) (Univ. of Minnesota Extension)
- Roundheaded Apple Tree Borer (Cornell)
- Rove Beetles (Iowa State Univ.)
- Sap Beetles (Univ. of Minnesota Extension)
- Sawflies (Univ. of Wisconsin Extension)|See also Sawflies (UMN Extension)
- Elm Sawfly
- Dogwood Sawfly (Iowa State Univ Extension) (additional images, including the adult stage: BugGuide.net)
- European Apple Sawfly
- European Pine Sawfly
- Introduced Pine Sawfly
- Striped Alder Sawfly (hosts include red alder, paper birch and willow)
- White Pine Sawfly
- Sawyer Beetles
- Scorpionflies (Univ. of Kentucky)
- Silverfish (and Firebrats)
- Slugs and Snails
- Snowfleas
- Sod Webworm (the larvae feed on grass) (Penn State)
- Southern Pine Beetle (Dendroctonus frontalis) — Detected in Waterboro, Maine in October, 2021 (Maine Forest Service) | Some Photos of the Southern Pine Beetle (BugGuide.net)
- Spiders
- Spongy Moth
- Spotted Asparagus Beetle
- Spotted Lanternfly (planthopper) (find it on our Invasive Species page)
- Spotted Wing Drosophila (invasive) (see Fruit Flies)
- Springtails / Snowfleas
- Spruce Budworm
- Squash Beetles / Squash Lady Beetles
- Squash Bugs
- Squash Vine Borer (Penn State)
- Stable Fly (University of Florida)
- Stalk Borer / Common Stalk Borer
- Stink Bugs
- Stoneflies
- Strawberry Clipper Weevil (also called Strawberry Bud Weevil or Strawberry Root Weevil) (Cornell)
- Strawberry Root Weevil (Oregon State University Extension)
- Strawberry Rootworm
- Striped Cucumber Beetle
- Sugar Maple Borer (BugGuide.net)
- Sweat Bees (BugGuide.net)
- Syrphid Flies (also called Hover Flies or Flower Flies)
- Tachina (Tachinid) Flies
- Tarnished Plant Bug
- Tent Caterpillars: Eastern Tent Caterpillars and Forest Tent Caterpillars
- Thrips (vectors of tospoviruses including Tomato Spotted Wilt Virus and Impatiens Necrotic Spot Virus)
- Ticks
- Tiger Beetles (Texas A&M)
- Common genus: Cicindela (University of Vermont)
- Maine IF&W: Rare Tiger Beetles
- Tobacco Hornworm
- Toe-Biter (also called Giant Water Bug)
- Tomato Hornworm
- Tortoise Beetles
- Tussock Caterpillars
- Viburnum Leaf Beetle
- Viburnum Leaf Beetle (PDF) (Cornell)
- Viburnum Leaf Beetle (Oregon State University) (good photos)
- Viburnum Leaf Beetle (UMass)
- Wasps/Hornets/Yellowjackets
- Water Boatmen (UWM)
- Water Scavenger Beetles (Texas A&M)
- Water Scorpions
- Water Striders
- Western Conifer Seed Bug
- Western Corn Rootworm (includes Northern and Southern also) (University of Illinois)
- Whiteflies (University of Missouri)
- Whitespotted Sawyer Beetle
- White Grubs
- White Pine Weevil
- Winter Moth (Maine Forest Service) [see also Control of Winter Moth Damage in New England (PDF) Blueberries — UMass] [2012 Bangor Daily story] and the Maine Forest Service Press Release (Nov-Dec 2015) “When moths fly with snow, let the Maine Forest Service know!”
- Wireworms
- Woodchuck Tick
- Wood Tick/American Dog Tick
- Wood Roach
- Woollybear Caterpillars (BugGuide.net): Banded Woollybear and Yellow Woollybear
- Yellowjackets/Hornets/Wasps
- Yellownecked Caterpillars (Penn State University)