Family Portunidae - swimming crabs

  Order
:
  Class
:
Malacostraca
  No. of Genera in Ref
:
  No. of Species in Ref
:
332
  Environment
:
Fresh : No | Brackish : No | Marine : Yes
  Aquarium
:
  First Fossil Record
:
     
Ref..   De Grave, S., N. Dean Pentcheff, S.T. Ahyong, T.-Y. Chan, K.A. Crandall, P.C. Dworschak, D.L. Felder, R.M. Feldmann, C.H.J.M. Fransen, L.Y.D. Goulding, R. Lemaitre, M.E.Y. Low, J.W. Martin, P.K.L. Ng, C.E. Schweitzer and S.H. … Tan 2009
  Remark
:
Carapace hexagonal, transversely ovate to transversely hexagonal, sometimes almost circular; dorsal surface generally relatively flat, often ridged or granulose; front broad, margin usually multidentate; 5 to 9 teeth on each anterolateral margin; posterolateral margins usually distinctly converging. Last pair of legs with distal 2 segments wider and more flattened than these segments of previous legs, in most species the dactylus is oval and paddle-shaped, adapted for swimming purposes, none of the dactyli with conspicuous spines. Male abdominal segments 3 to 5 completely fused, immovable (Ref. 104052).
  Etymology
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  Division
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  Reproductive guild
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  Typical activity level
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  Main Ref
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  Coordinator
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Ref.
[ e.g. 9948]                       
Glossary
                    [ e.g. cephalopods]


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