Striped Shore Crab
Pachygrapsus crassipes
This record describes Pachygrapsus crassipes (species). Recorded family: Grapsidae. Recorded order: Decapoda.
Identification and Appearance
According to this website , this species is unique among grapsids in having transverse lines on its carapace and two teeth rather than three on the anterolateral margin of its carapace.
Classification
Habitat and Range
Geographic Range
Oregon to Baja California.
About Crabs, Crayfishes, Lobsters, Prawns, and Shrimp: the wider group
Order-level background for Decapoda, the group containing Pachygrapsus crassipes. 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 Striped Shore Crab (5)
Photo credits: Contributed by Charley Eiseman
Frequently Asked Questions About Striped Shore Crab
What is Striped Shore Crab?
Striped Shore Crab (Pachygrapsus crassipes) is a species in the family Grapsidae, within the order Decapoda.
How do you identify Striped Shore Crab?
According to this website , this species is unique among grapsids in having transverse lines on its carapace and two teeth rather than three on the anterolateral margin of its carapace.
Where is Striped Shore Crab found?
Range: Oregon to Baja California.