THE XERCES SOCIETY FOR INVERTEBRATE CONSERVATION

Aquatic Invertebrates in Pacific Northwest Freshwater Wetlands
An Identification Guide and Educational Resource
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  Identify taxaJointed legsCrustaceaBranchiopoda
 

Anostraca
(brine or fairy shrimp)
Stalked eyes, no carapace, legs in 10-32 (usually 11) pairs.

 
       
 

Cladocera
(water fleas)
Sessile eyes, carapace not covering the head, thorax and abdomen undifferentiated.

 
       
 

Conchostraca
(clam shrimp)
Sessile eyes, bivalved carapace that includes the head, thorax and abdomen undifferentiated.

 
       
  Notostraca
(tadpole shrimp)
Broad, plate-like carapace and narrow, elongate thorax/abdomen.
   triops
       
 
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