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 Major Groups | Crustacea (crustaceans) | Malacostraca (malacostracans) | Decapoda (yabbies plus) | Trogloplacidae

Australocarinus riparius

Major Group: Crustacea
Minor Group: Malacostraca
Order: Decapoda
Genus: Australocarinus
Species: riparius
This family is represented in Australia by a single species, Australocarcinus riparius Davie.

Descriptive Features:

  • carapace rounded, sometimes poorly calcified, anterolateral margin cristate, entire or toothed, front with or without shallow median indentation, without latero-external notch
  • eyes relatively small
  • antennules folded completely into fosset, antenna lying in orbital hiatus
  • buccal frame quadrangular
  • 3rd maxillipeds wide, almost completely closing buccal cavity
  • exopod broad, with flagellum
  • thoracic sternum very broad, with all sutures interrupted
  • large part of sternite 8 exposed, supplementary transverse suture in middle of sternite 8, parallel to suture 7/8, forming supplementary plate
  • sterno-abdominal cavity deep
  • male abdomen with segments 3-5 fused
  • abdominal locking mechanism in normal position
  • vulvae of female very large, occupying position near extremity of sternal suture 5/6
  • male penis very long, lying in covered channel on sternite 8, only uncovered next to the coxa of last leg, finally protruding as long soft papilla
  • chelipeds with minor heterochely and heterodonty
  • male 1st gonopod stout, moderately tapered, with an apical aperture, 2nd gonopod about as long as 1st, with flagellum about same length as peduncle
  • Carapace width:  

    Australocarcinus riparius

    Taxonomic Checklist: Australocarcinus riparius Davie

    Distribution: Qld

    Sensitivity Rating: none

    Functional Feeding Group: unknown


    tributary to Barron River, Kuranda Qld

    Ecology: Instream habitat: Australocarcinus riparius occurs in rainforest streams and upper estuarine environments. It can be found under rocks in littoral areas and in short or narrow and meandering burrows extending twenty to thirty centimetres into the bank.
    Feeding ecology:
    Habit: Australocarcinus riparius is cryptic.
    Life history: Juvenile crabs hatch directly from the eggs.


    Information Sources: Davie 2002b