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Checklist for Order Amphipoda Latreille, 1816 (Amphipod)
and region Ravalli County (Montana, USA)


Class
 		Malacostraca
Latreille, 1802
Higher Crustaceans, Malacostracans		18
19
21		Families
Genera
Species		 
Taxom
 

Subclass
 		Eumalacostraca
Grobben, 1892
18
19
21		Families
Genera
Species		 
Taxom
 

Superorder
 		Peracarida
Calman, 1904
12
13
15		Families
Genera
Species		 
Taxom
 

Order
 		Amphipoda
Latreille, 1816
Amphipod, Amphipod Tubes, Amphipod Whips, Amphipods, Scuds		5
6
8		Families
Genera
Species		 
Taxom
 


List of families for Ravalli County
5 Families width 8 Species
Lysianassidae (Dana, 1849)2SpeciesTaxom
Gammaridae Leach, 1813Gammarids1SpeciesTaxom
Hyalellidae Gurjanova, 19531SpeciesTaxom
Allocrangonyctidae Holsinger, 19891SpeciesTaxom
Crangonyctidae Bousfield, 1973Gammarid amphipods3SpeciesTaxom


Genera for Ravalli County
6 Genera with 8 Species
Eurythenes S. I. Smith, 18221SpeciesTaxom
Gammarus Fabricius, 1864Freshwater Shrimp Gammarus1SpeciesTaxom
Hyalella Smith, 18581SpeciesTaxom
Lysianassa Milne-Edwards, 18891SpeciesTaxom
Pseudoniphargus Chevreux, 19881SpeciesTaxom
Stygobromus Cope, 19743SpeciesTaxom


Species list for Ravalli County
8 Species
Eurythenes gryllus Lichtenstein, 1822Amphipod
Gammarus lacustris G.O. Sars, 1864An Amphipod
Hyalella azteca Saussure, 1858Mexican Freshwater Shrimp
Lysianassa ceratina (Walker, 1889)⇒ Lysianassa caesarea Ruffo, 1987
Pseudoniphargus baetis Notenboom, 1988
Stygobromus montanensis Holsinger, 1974Montana groundwater amphipod
Stygobromus obscurus Holsinger, 1974Obscure well amphipod
Stygobromus tritus Holsinger, 1974Worn stygobromid

Subnodes of Amphipoda with occurrences in Ravalli County
SuborderAmphilochidea
Boeck, 1871
1
2
2		Family
Genera
Species
Taxom

SuborderSenticaudata
Lowry & Myers, 2013
4
4
6		Families
Genera
Species
Taxom



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