Petrochirus diogenes
This record describes Petrochirus diogenes (species). Recorded family: Diogenidae. Recorded order: Decapoda.
Identification and Appearance
The largest hermit crab on the Gulf Coast
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Malacostraca
- Order
- Decapoda (Crabs, Crayfishes, Lobsters, Prawns, and Shrimp)
- Superfamily
- Paguroidea
- Family
- Diogenidae
- Genus
- Petrochirus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
Caribbean, Gulf of Mexico, Bahamas, peninsular FL
Additional species information
Species notes from the sources
Etymology: Petrochirus diogenes (L. 1758)
About Crabs, Crayfishes, Lobsters, Prawns, and Shrimp: the wider group
Order-level background for Decapoda, the group containing Petrochirus diogenes. Species-specific details appear above.
Group overview
Decapoda includes ~15,000 described species of crabs, lobsters, shrimp, and crayfish. Although primarily marine and freshwater, some species like hermit crabs and coconut crabs are fully terrestrial.
Ecological role of the group
Crayfish are keystone species in freshwater ecosystems, influencing water clarity, sediment dynamics, and plant communities. Hermit crabs play vital roles in nutrient cycling on tropical islands.
Economic and practical significance of the group
The global shrimp industry alone is worth over $45 billion annually. Crayfish are important aquaculture species and invasive crayfish cause ecological damage estimated in the hundreds of millions annually in Europe and North America.
Recorded sources for this group: FAO fisheries statistics, freshwater ecology. Imported estimates may describe particular regions or reporting periods.
Photos of Petrochirus diogenes (3)
Photo credits: Contributed by Aaron Hunt
Frequently Asked Questions About Petrochirus diogenes
What is Petrochirus diogenes?
Petrochirus diogenes is a species in the family Diogenidae, within the order Decapoda.
How do you identify Petrochirus diogenes?
The largest hermit crab on the Gulf Coast
Where is Petrochirus diogenes found?
Range: Caribbean, Gulf of Mexico, Bahamas, peninsular FL