Hemiptera (true bugs)
- Aquatic Insects of Michigan - checklist and identification resources
- Australian Faunal Directory - checklists and bibliographies for Australian insects
- Bed bugs: Biology and Management FAQ - biology, ecology, public health significance of bed bugs. Identification resource and integrated pest management strategies for homeowners, tenants, and landlords. Harvard.
- BugGuide.Net - community site with user-submitted images for identification, information on insect groups
- Calodema Website of Dr TJ Hawkeswood - Website provides free PDF files of TJ Hawkeswood and his co-workers biological research.
- Canadian National Collection of Insects - 17 million specimens, mostly North American fauna. Ottawa, Canada.
- Checklist of the Hemiptera of Oklahoma - Checklist and bibliography of the more than 520 species of true bugs known to occur in Oklahoma
- Cirrus Digital Imaging - True Bugs - Insect Order Hemiptera Photographs - High-resolution images of common true bugs, photographed live, in the wild. Identified with common and scientific names.
- Common North American Arthropods - Extensive catalog of copyrighted high-resolution arthropod photographs.
- Essig Museum of Entomology - 4.5 million specimens, emphasizing western North America.
- Heteroptera - Tree of Life
- Hforest - Hypermedia Forest Insect and Disease Knowledgebase and Diagnosis.
- Illinois Natural History Survey - 6 million specimens. Several insect databases, including a searchable, specimen level Plecoptera database . Dates back to 1858
- Illustrated Key to the Economically Important Leafhoppers of Australia - (Hemiptera: Cicadellidae)
- Insect Field Collection Photos - Arizona Crop Information photos 2000-2003
- Interactive checklist on Fulgoromorpha - (Hemiptera) from Museum national d'Histoire naturelle
- Louisiana State Arthropod Museum - 400,000 specimens. Fauna of the southcentral United States and Circum-Caribbean region
- Lyman Entomological Museum and Research Laboratory - 2.8 million specimens; second largest insect collection in Canada. Major groups include Orthoptera, Lepidoptera, Coleoptera, Hymenoptera. McGill University
- North Carolina State University Insect Collection - 1.1 million specimens. Emphasis on North Carolina insects and worldwide Homoptera
- Podisus Online - bibliography of the predatory bugs of the genus Podisus (Heteroptera: Pentatomidae)
- Snow Entomological Research Collection - 4.1 million specimens. University of Kansas Natural History Museum
- Society for Vector Ecology
- The International Database on Insect Disinfestation and Sterilization - IDIDAS provides information on disinfestation and sterilization of arthropod species, with dosage levels and conditions, efficacy and references. For researchers, phytosanotary regulators, plant protection services and SIT facility and food irradiation operations personnel.
- University of Connecticut Biological Collections: Insects - fauna of southern New England
- Veterinary Entomology - biological information on various insect parasites of animals and to some extent humans. Tsetse flies, tabanids, screwworm, fleas and cockroaches
- Wilbur R. Enns Entomology Museum - at the University of Missouri-Columbia. 5.75 million specimens. Many aquatic insects of Ozark streams
