Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Parasitengona - velvet mites (including chiggers) & water mites

California digital reference collection, by Aquatic Bioassessment Lab
quick visual guide to aquatic invertebrates

Australian aquatic invertebrates

Transactions of the Linnean Society of London- Journal available for free at Internet Archive
Individual Volumes:

First Series:

1 17912 17943 17974 17985 18006 18027 18048 18079 180810 1811

AMNH Invertebrate Zoology Type Specimens
Database of type specimens held at the American Museum of Natural History, with photos of many of the types.

NAPPO's Phytosanitary Alert System
NAPPO = North American Plant Protection Organization

Insects (Ontario Ministry of Agriculture, Food and Rural Affairs web site)
Sound insect pest fact sheets

Pest Tracker - National agricultural pest information system
Pest fact sheets & maps are very helpful

Bulletin of the Museum of Comparative Zoology- Journal available for free from Internet Archive