Florent's Guide To The Hawaiian, South Pacific and

Indo-Pacific Reefs

Two Tooth Guard Crab
Trapezia bidentata
Two Tooth Guard Crab
Also known as: Rusty Guard Crab
Category: Coral Crabs
Scientific Name: Trapezia bidentata
Size: 0.5 to 1 in. (1.5 to 2.5 cm)  
Depth: 5-140 ft. (2-43 m)
Distribution: Indo-Pacific, Hawaii
Arthropoda (Phylum) Arthropods
└Crustacea (Subphylum) Crustaceans
 └Multicrustacea (Superclass) Typical Crustaceans
  └Malacostraca (Class) Malacostracans
   └Eumalacostraca (Subclass) Decapods, Isopods, and Allies
    └Eucarida (Superorder)
     └Decapoda (Order) Decapods
      └Pleocyemata (Suborder)
       └Brachyura (Infraorder) True Crabs
        └Trapezioidea (Superfamily) Coral Crabs
         └Trapeziidae (Family)
          └Trapezia (Genus)
           └T. bidentata (Species)
WoRMS ID: 443875🔗
iNaturalist ID: 130651🔗

All Photographs
© 2026 Florent Charpin