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Title: Iais  
Author: World Heritage Encyclopedia
Language: English
Subject: Asellota
Collection: Asellota
Publisher: World Heritage Encyclopedia


Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Isopoda
Superfamily: Janiroidea
Family: Janiridae
Genus: Iais
Bovallius, 1886 [1]
Type species
Iais hargeri Bovallius, 1886 [2]

Iais is a genus of isopod crustaceans. Iais species are found in association with larger isopods of the family Sphaeromatidae, usually on the ventral surface of the larger animal, between the pereiopods and on the pleopods.[3] They are native to Australasia and South America, although Iais californica and its host Sphaeroma quoyanum have invaded California, and I. californica was first described from Sausalito, California.[4] Nine species are recognised:[5]

  • Iais aquilei Coineau, 1977
  • Iais californica (H. Richardson, 1904)
  • Iais chilensis (Winkler, 1992)
  • Iais elongata Sivertsen & Holthuis, 1980
  • Iais floridana Kensley & Schotte, 1999
  • Iais pubescens (Dana, 1853)
  • Iais singaporensis Menzies & Barnard, 1951
  • Iais solangae Coineau, 1985


  1. ^ "Iais".  
  2. ^ Bovallius, 1886"Iais"Genus .  
  3. ^ D. E. Hurley (1955). (Crustacea Isopoda)"Iais"The New Zealand species of . Transactions and Proceedings of the Royal Society of New Zealand 83 (4): 715–719. 
  4. ^ George Rotramel (1972). , two symbiotic isopods introduced to California (Isopoda, Janiridae and Sphaeromatidae)"Sphaeroma quoyanum and Iais californica" ( 
  5. ^ Marilyn Schotte (2009). M. Schotte, C. B. Boyko, N. L. Bruce, G. C. B. Poore, S. Taiti & G. D. F. Wilson, ed. Bovallius, 1886"Iais". World Marine, Freshwater and Terrestrial Isopod Crustaceans database.  

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