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Square-back American marsh crabs
Armases
Armases is a genus of true crabs in the family Sesarmidae. There are about 13 described species in Armases.
13 branches of this genus, most-observed first

Squareback Marsh Crab
speciesArmases cinereum

Narrow Tree Crab
speciesArmases angustum

Humic Marsh Crab
speciesArmases ricordi

Armases angustipes
speciesArmases angustipes

Armases americanum
speciesArmases americanum

Armases rubripes
speciesArmases rubripes

Armases occidentale
speciesArmases occidentale

fatfinger marsh crab
speciesArmases benedicti

Armases roberti
speciesArmases roberti

Armases elegans
speciesArmases elegans

Armases magdalenense
speciesArmases magdalenense

Armases miersii
speciesArmases miersii

Armases gorei
speciesArmases gorei
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Armases in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 122247.