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Checklist for Subclass Eumalacostraca Grobben, 1892
and region Acton (Middlesex County, Massachusetts, USA)


Class
 		Malacostraca
Latreille, 1802
Higher Crustaceans, Malacostracans		6
7
8		Families
Genera
Species		 
Taxom
 

Subclass
 		Eumalacostraca
Grobben, 1892
6
7
8		Families
Genera
Species		 
Taxom
 


List of families for Acton (Middlesex County Massachusetts)
6 Families width 8 Species
Asellidae Latreille, 1802Freshwater Isopods2SpeciesTaxom
Crangonyctidae Bousfield, 1973Gammarid amphipods2SpeciesTaxom
Lysianassidae Dana, 18491SpeciesTaxom
Gammaridae Leach, 1813Gammarids1SpeciesTaxom
Hyalellidae Gurjanova, 19531SpeciesTaxom
Cambaridae Hobbs, 1942Cambarid crayfishes1SpeciesTaxom


Genera for Acton (Middlesex County Massachusetts)
7 Genera with 8 Species
Caecidotea Packard, 1818Cave Obligate Isopods1SpeciesTaxom
Conasellus Stammer, 18181SpeciesTaxom
Crangonyx Bate, 19582SpeciesTaxom
Eurythenes S. I. Smith, 18221SpeciesTaxom
Gammarus Fabricius, 1939Freshwater Shrimp Gammarus1SpeciesTaxom
Hyalella Smith, 18581SpeciesTaxom
Orconectes Cope, 18701SpeciesTaxom


Species list for Acton (Middlesex County Massachusetts)
8 Species
Caecidotea communis (Say, 1818)⇒ Conasellus communis Say, 1818
Conasellus communis Say, 1818
Crangonyx aberrans S.I. Smith, 1983Aberrant crangonyctid
Crangonyx pseudogracilis Bousfield, 1958Northern river crangonyctid
Eurythenes gryllus Lichtenstein, 1822Amphipod
Gammarus tigrinus Sexton, 1939Fewflower evening primrose
Hyalella azteca Saussure, 1858Mexican Freshwater Shrimp
Orconectes (Gremicambarus) virilis Hagen, 1870Common Crawfish

Subnodes of Eumalacostraca with occurrences in Acton (Middlesex County Massachusetts)
SuperorderEucarida
Calman, 1904
1
1
1		Family
Genus
Species
Taxom

SuperorderPeracarida
Calman, 1904
5
6
7		Families
Genera
Species
Taxom



Links, sources and further information
Eumalacostraca at artfakta.se
Eumalacostraca at biodiversity.org.au
Eumalacostraca at dyntaxa.se
Eumalacostraca at itis.gov
Eumalacostraca at marinespecies.org