Current Threats to Forest Health

Insects

emerald ash borer

Name* and Details:

Emerald Ash Borer
Detection Map
Status: Exotic
Mostly Affects: All species of Ash

Additional Resources:

asian longhorned beetle

Name* and Details:

Asian Longhorned Beetle
Status: Exotic
Mostly Affects: Maples

Additional Resources:

winter moth

Name* and Details:

Winter Moth
Status: Exotic
Mostly Affects: Maples

Additional Resources:

NH Winter Moth Alert
Winter Moth Control Measures

lymantria dispar (LDD) (formerly gypsy moth)

Name* and Details:

Lymantria Dispar (LDD) (formerly gypsy moth)
Lymantria Dispar (LDD) in Rhode Island
Status: Exotic
Mostly Affects: Oaks, other hardwoods

Additional Resources:

USDA APHIS Lymantria Dispar Information
USDA Forest Service “Pest Alert”
USDA Forest Service Lymantria Dispar Information

hemlock woolly adelgid

Name* and Details:

Hemlock Woolly Adelgid
Status: Exotic
Mostly Affects: Hemlock

Additional Resources:

USDA Forest Service Hemlock Woolly Adelgid info

southern pine beetle

Name* and Details:

Southern Pine Beetle
Status: Native
Mostly Affects: Hard pines (Pitch pine), Others

Additional Resources:

USDA Forest Service Southern Pine Beetle

oak gall wasps

Name* and Details:

Oak Gall Wasps
Status: Native
Mostly Affects: All Oak

Additional Resources:

Gall Wasps – Wikipedia

spotted lantern fly

Name* and Details:

Spotted Lanternfly
Status: Exotic
Mostly Affects: Ailanthus, fruit trees, grape vines

Additional Resources:

USDA APHIS “Leave Hungry Pests Behind"
Northeastern IPM Center

Diseases

beech leaf disease

Name* and Details:

Beech Leaf Disease (BLD) 
Mostly Affects: all American Beech

Additional Resources:

Ohio DNR
USDA Forest Service "Pest Alert"

beech bark disease

Name* and Details:

Beech Bark Disease (Neonectria spp.) 
Mostly Affects: American Beech

Additional Resources:

USDA Forest Service Beech Bark Disease info
USDA Invasive Species Information Center

Rhyzosphaera needle cast

Name* and Details:

Rhyzosphaera needle cast 
Mostly Affects: Colorado Blue, other Spruces & Firs

Additional Resources:

UMass Extension: Rhizophaera Needle Cast

White pine needle damage

Name* and Details:

White Pine Needle Damage 
Mostly Affects: Eastern White Pine

Additional Resources:

Monitoring Eastern White Pine Decline and its Causes

white pine blister rust

Name* and Details:

White Pine Blister Rust 
Mostly Affects: Eastern White Pine

Additional Resources:

USDA Forest Service White Pine Blister Rust
USDA Forest Service White Pine Blister Rust General Ecology and Management

sudden oak death

Name* and Details:

Sudden Oak Death (Phytophthora ramorum)
Mostly Affects: Oaks, Laurels

Additional Resources:

USDA APHIS Sudden Oak Death
USDA Forest Service Sudden Oak Death info