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Spiny Crayfishes
Euastacus
Euastacus is a genus of freshwater crayfish known as "spiny crayfish". They are found in the south-east of the Australian mainland, along with another genus of crayfish, Cherax. Both genera are members of the family Parastacidae, a family of freshwater crayfish restricted to the Southern Hemisphere.
Euastacus crayfish are distinguished from the smooth-shelled Cherax species by the short robust spikes on their claws and carapace, and frequently, their larger size. Many Euastacus species grow to a relatively large size, with the Murray River crayfish (Euastacus armatus) being the second largest freshwater crayfish species in the world. (The largest freshwater crayfish in the world is the Tasmanian giant freshwater crayfish (Astacopsis gouldi), found on the Australian island of Tasmania, and the genus Astacopsis is now known to be a very closely related sister genus to Euastacus.)
56 branches of this genus, most-observed first
Lamington Spiny Crayfish
speciesEuastacus sulcatus
Giant Spiny Crayfish
speciesEuastacus spinifer
Sydney Crayfish
speciesEuastacus australasiensis
Central Highland Spiny Crayfish
speciesEuastacus woiwuru
Gippsland Spiny Crayfish
speciesEuastacus kershawi
Murray Crayfish
speciesEuastacus armatus
Yarra spiny crayfish
speciesEuastacus yarraensis
Maleny Crayfish
speciesEuastacus urospinosus
Euastacus valentulus
speciesEuastacus valentulus
Euastacus setosus
speciesEuastacus setosus
Conondale Spiny Crayfish
speciesEuastacus hystricosus
Euastacus yanga
speciesEuastacus yanga
Euastacus suttoni
speciesEuastacus suttoni
Glenelg Spiny Crayfish
speciesEuastacus bispinosus
Euastacus hirsutus
speciesEuastacus hirsutus
Small Spiny Crayfish
speciesEuastacus dangadi
Alpine Spiny Crayfish
speciesEuastacus crassus
Mount Lewis Spiny Crayfish
speciesEuastacus fleckeri
Euastacus neodiversus
speciesEuastacus neodiversus
Euastacus rieki
speciesEuastacus rieki
Embezee’s Crayfish
speciesEuastacus binzayedi
Euastacus clydensis
speciesEuastacus clydensis
Euastacus neohirsutus
speciesEuastacus neohirsutus
Euastacus jagara
speciesEuastacus jagara
Ellen Clark's Crayfish
speciesEuastacus clarkae
Euastacus maidae
speciesEuastacus maidae
Euastacus polysetosus
speciesEuastacus polysetosus
Euastacus monteithorum
speciesEuastacus monteithorum
Euastacus eungella
speciesEuastacus eungella
Euastacus girurmulayn
speciesEuastacus girurmulayn
Euastacus reductus
speciesEuastacus reductus
Short Thorax Crayfish
speciesEuastacus brachythorax
Mud Gully Crayfish
speciesEuastacus dalagarbe
Euastacus gumar
speciesEuastacus gumar
Euastacus pilosus
speciesEuastacus pilosus
Euastacus spinichelatus
speciesEuastacus spinichelatus
Balan Spiny Crayfish
speciesEuastacus balanensis
East Gippsland Spiny Crayfish
speciesEuastacus bidawalus
Euastacus gamilaroi
speciesEuastacus gamilaroi
Euastacus simplex
speciesEuastacus simplex
Orange-bellied Crayfish
speciesEuastacus mirangudjin
Swollen Crayfish
speciesEuastacus guruhgi
Euastacus guwinus
speciesEuastacus guwinus
Euastacus jagabar
speciesEuastacus jagabar
Slender Dwarf Crayfish
speciesEuastacus angustus
Euastacus vesper
speciesEuastacus vesper
Fetzner's Spiny Crayfish
speciesEuastacus fetzneri
Mt Elliot Crayfish
speciesEuastacus bindal
Clayton's Crayfish
speciesEuastacus claytoni
Fitzroy Falls Spiny Crayfish
speciesEuastacus dharawalus
Orbost Spiny Crayfish
speciesEuastacus diversus
Euastacus robertsi
speciesEuastacus robertsi
Euastacus morgani
speciesEuastacus morgani
Cardwell Hairy Crayfish
speciesEuastacus yigara
Terrestrial Crayfish
speciesEuastacus maccai
Euastacus coughrani
speciesEuastacus coughrani
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 Euastacus 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 88267.