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Checklist for Order Spirobolida Cook, 1895 (Round-backed millipedes)
and region Iowa (USA)


Class
 		Diplopoda
De Blainville in Gervais, 1844
Diplopods, Millepedes, Millipede, Millipedes		12
17
23		Families
Genera
Species		 
Taxom
 

Subclass
 		Chilognatha
Latreille, 1802
12
17
23		Families
Genera
Species		 
Taxom
 

Infraclass
 		Helminthomorpha
Pocock, 1887
11
16
22		Families
Genera
Species		 
Taxom
 

Superorder
 		Anocheta
Cook, 1895
2
3
3		Families
Genera
Species		 
Taxom
 

Order
 		Spirobolida
Cook, 1895
Round-backed millipedes		2
3
3		Families
Genera
Species		 
Taxom
 


List of families for Iowa
2 Families width 3 Species
Spirobolidae (Bollman, 1893)2SpeciesTaxom
Trigoniulidae Attems, 19091SpeciesTaxom


Genera for Iowa
3 Genera with 3 Species
Arctobolus Cook, 01SpeciesTaxom
Narceus Rafinesque, 18201SpeciesTaxom
Trigoniulus Pocock, 19451SpeciesTaxom


Species list for Iowa
3 Species
Arctobolus onandaga
Narceus annularis (Rafinesque, 1820)⇒ Narceus annularus Rafinesque, 1820
Trigoniulus amnestus Chamberlin, 1945

Subnodes of Spirobolida with occurrences in Iowa
SuborderTrigoniulidea
Brölemann, 1913
1
1
1		Family
Genus
Species
Taxom

FamilySpirobolidae
Bollman, 1893
2
2		Genera
Species
Taxom



Links, sources and further information
Spirobolida at artfakta.se
Spirobolida at dyntaxa.se
Spirobolida at gbif.org
Spirobolida at irmng.org
Spirobolida at itis.gov