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Interested in a 2022 BugGuide gathering in New Mexico?

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

National Moth Week 2020 photos of insects and people.

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

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

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Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

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TaxonomyBrowse
Info
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Class Merostomata - Horseshoe Crabs

Atlantic horseshoe crab - Limulus polyphemus - male - female Eurypterus remipes
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Merostomata (Horseshoe Crabs)
Numbers
One North American species, Limulus polyphemus.
Remarks
In addition to the order Xiphosura, which includes the horseshoe crabs, this class includes the extinct order Eurypterida, known as sea scorpions.
Internet References