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Eurynoma aspera.jpg
Eurynoma aspera
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Brachyura
Superfamily: Majoidea
Family: Majidae
Samouelle, 1819
  • Eurynolambrinae
  • Majinae
  • Micromaiinae †
  • Mithracinae
  • Planoterginae

Majidae is a family of crabs, comprising around 200 marine species inside 52 genera, with a carapace that is longer than it is broad, and which forms a point at the front. The legs can be very long in some species, leading to the name "spider crab". The exoskeleton is covered with bristles to which the crab attaches algae and other items to act as camouflage.


The roughly 200 extant and over 50 extinct species are divided among 52 genera in 5 subfamilies:[1]

Eurynolambrinae Števčić, 1994

Majinae Samouelle, 1819

MicromaiinaeBeurlen, 1930

Mithracinae MacLeay, 1838

Planoterginae Števčić, 1991

External links[edit]

  • Data related to Majidae at Wikispecies
  • Media related to Majidae at Wikimedia Commons


  1. ^ Sammy De Grave; N. Dean Pentcheff; Shane T. Ahyong; et al. (2009). "A classification of living and fossil genera of decapod crustaceans" (PDF). Raffles Bulletin of Zoology. Suppl. 21: 1–109. Archived from the original (PDF) on 2011-06-06.