Johngarthia
Johngarthia is a genus of crabs in the land crab family Gecarcinidae, formerly included in the genus Gecarcinus, and containing six species. The genus bears the name of John S. Garth, a 20th century naturalist who specialized in crabs and other arthropods.
| Image | Name | Distribution |
| Johngarthia cocoensis Perger, Vargas & Wall, 2011 | Eastern Pacific Ocean: Cocos Island off Costa Rica | |
| Johngarthia lagostoma | Southern Atlantic Ocean: Ascension Island, Ilha Trindade, Fernando de Noronha, and Atol das Rocas | |
| Johngarthia malpilensis | Eastern Pacific Ocean: Malpelo Island | |
| Johngarthia oceanica Perger, 2019 | Eastern Pacific Ocean: Clipperton Island, Socorro Island | |
| Johngarthia planata | Eastern Pacific Ocean: Gulf of California, Costa Rica, Colombia, and continental mainland beaches of Mexico | |
| Johngarthia weileri | Eastern Atlantic Ocean: coast of Cameroon and islands of the Gulf of Guinea |