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

See Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events



Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
No Taxon (Glossary)
No Taxon (S)
No Taxon spinneret
Explanation of Names
The word was coined in the 19th century as a diminutive of spinner, which originally meant spider and was later applied to "person who spins textile thread" (Online Entomological Dictionary).
spinneret noun - 1-Structure at or near the tip of a spider's abdomen which produces silk (there are normally a group of them). 2-structure on the labium of a caterpillar which produces silk.

Photos of spider spinnerets:

Photos of spinnerets in caterpillars:
Most spiders have spinnerets visible from only from the side or below. Prominent spinnerets visible from above help to identify the Family Gnaphosidae and the genus Agelenopsis in the family Agelenidae.
Internet References
Wikipedia: Spinneret
Enchanted Learning: Caterpillar Anatomy