Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

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

National Moth Week was July 23-31, 2022! See moth submissions.

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


Family Grapsidae - Marsh Crabs, Shore Crabs, and Talon Crabs

Hemigrapsus sanguineus Hemigrapsus sanguineus Hemigrapsus sanguineus Asian Shore Crab - Hemigrapsus sanguineus Oregon Shore Crab - Hemigrapsus oregonensis Japanese Shore Crab - Hemigrapsus sanguineus perfectly camouflaged green crab - Pachygrapsus crassipes unknown crab - Pachygrapsus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Crustacea (Crustaceans)
Class Malacostraca (Malacostracans)
Superorder Eucarida (Eucarida (Crabs, Crayfish, Shrimp, etc.))
Order Decapoda (Crabs, Crayfishes, Lobsters, Prawns, and Shrimp)
Infraorder Brachyura (True Crabs)
Family Grapsidae (Marsh Crabs, Shore Crabs, and Talon Crabs)
Synonyms and other taxonomic changes
A number of taxa, formerly treated as subfamilies of the family Grapsidae are now considered families in their own right, including the Varunidae and Plagusiidae. (1)
Explanation of Names
Grapsidae Macleay, 1838
8 extant genera remain in the family (1)
Works Cited
1.A classification of living and fossil genera of decapod crustaceans.
Sammy De Grave; N. Dean Pentcheff; Shane T. Ahyong; et al. 2009. Raffles Bulletin of Zoology. Suppl. 21: 1–109.