General

• Book of Insect Records - The fastest, biggest, loudest insects in the world! 
• Bug ID - Identify unknown insects by answering a series of questions. 
• Bug of the Month - Pictures and information about an insect for each month of the year. 
• eNature Field Guide: Insects and Spiders - Browse by type of insect, or use the advanced search to look for color, size, region, habitat and more. 
• Entomology For Beginners - An introduction to the study of insects. 
• Entomology For Kids - Lots of resources for teachers and students about collecting and identifying insects.
• Insect Information Sheets - Provides facts about fourteen different kinds of insects. 
• Insect Printouts - Insect graphics and blank diagrams to print out and use.
• Katerpillars and Mystery Bugs - Food that looks like bugs (or are bugs!), insect projects, jokes and more.
• MicroAngela's - Electron microscope (very close up) images of bugs and other cool stuff.

Ants

• Gakken's Photo Encyclopedia of Ants

Beetles

• Coleoptera - frequently asked questions

Butterflies

• Butterfly Guide Butterfly Wing Patterns 
• Family Butterfly Book activity kit

Cockroaches

• Roach World 

Spiders

• Arachnids! 
• Minax Tarantulas Spiders : Information from the Australian Museum Online 
• Spiders - Brief overview of spiders in general, specific information about several North American Spiders

Worms

• The Adventures of Herman 
• Worms 
• Yucky Worm World