Crop Protection Compendium
Pest Directory
PQR - EPPO Plant Quarantine Data Retrieval System
Insect and Insect-Related Software Developed by UF/IFAS
Mansfeld's World Database of Agricultural and Horticultural Crops
The Universal Virus Database of the International Committe on Taxonomy of Viruses
Fauna europaea
Index Fungorum
Species 2000
Iowa State Entomology Index of Internet Resources
Stored Product Insect Images Database
Review of Plant Pathology
Review of agricultural entomology
New Disease Reports
List of Prokaryotic names with Standing in Nomenclature
Animal and Plant Health Inspection Service (APHIS)
Thomson Scientific-BIOSIS
BugGuide.Net
European Food Safety Authority (EFSA)