Links of Interest:
APHIS's Hungry Pests Site (FAQ pages, photos, pest tracker maps, reporting & mgmt tips)
Center for Invasive Species and Ecosystem Health
International Society of Arboriculture
National Site for USDA Regional IPM Centers (Crop Profiles, Pest Alerts, Mgmt Research, etc.)
Emerald Ash Borer University (Webinars, publications, etc.)
Beetle Busters (Asian longhorned beetle FAQs, educational materials, games)
Texas Invasives (Invasive species info specific to Texas)
Pest/Pathogen National Newsletters:
National Plant Diagnostic Network – National Newsletter
USDA's APHIS PPQ Stakeholder's Registry
Newsletters by region and state:
Midwest
IL – The Morton Arboretum's Plant Health Care Report
IL – The University of Illinois Home, Yard & Garden Pest Newsletter
KY – University of Kentucky, Kentucky Pest News
Northeast
MA – UMass Landscape Message
NY – "Branching Out," an IPM Newsletter by Cornell Dept of Plant Pathology and Cornell
Cooperative Extension
Western Region
Western Plant Diagnostic Network Newsletter and Pacific Pest Detector
AK – University of Alaska, Extension, IPM (Insects and Diseases)
AZ – Arizona Plant Diagnotic Network (Pest Alerts)
CA – University of California IPM "Green Bulletin"
CA – LA County Agricultural Commissioner's Dept.
HI – Hawaii Dept. of Agriculture, Plant Pest Control Information (bottom of page)
WA – Washington State University Extension (Plant Pests and Diseases)
Southeast
NC – Dr. Steven Frank's website "Insect Ecology and Integrated Pest Management"
Follow Dr. Frank's EcoIPM on Twitter
Follow Dr. Frank's OrnaPests on Twitter