Family Xanthidae - stone and mud crabs

  Order
:
  Class
:
Malacostraca
  No. of Genera in Ref
:
  No. of Species in Ref
:
629
  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
:
Carapce hexagonal, transversely hexagonal to transversely ovate, sometimes circular; dorsal surface usually ridged or granulose; frontal margin usually notched medially; usually 2 to 6 spines, teeth and/or lobes on each anterolateral margin. Longitudinal ridges which define efferent respiratory current usually absent or strong only on posterior part of endostome, ridges not visible on anterior part of endostome when mouthparts pushed aside. Fingers of chela may be spoon-tipped. Legs varying in structure; propodus and dactylus may show a special dactylo-propodal articulation. Male abdominal segments 3 to 5 immovable, fused completely or incompletely. Male first gonopod slender, slightly sinous; male second gonopod very short, less than 1/4 the length of male first gonopod (Ref. 343).
  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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