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Checklist for Infraclass Megoperculata Börner, 1902
and region Altona (Boulder County, Colorado, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		5
5
5		Families
Genera
Species		 
Taxom
 

Subclass
 		Micrura
Ehrenberg, 1831
4
4
4		Families
Genera
Species		 
Taxom
 

Infraclass
 		Megoperculata
Börner, 1902
4
4
4		Families
Genera
Species		 
Taxom
 


List of families for Altona (Boulder County)
4 Families width 4 Species
Miturgidae Simon, 1885Long-legged sac spiders1SpeciesTaxom
Dysderidae (C. L. Koch, 1837)Dysderid spiders1SpeciesTaxom
Theridiidae Sundevall, 1833Cobweb And Widow Spiders1SpeciesTaxom
Philodromidae Thorell, 1870False crab spiders1SpeciesTaxom


Genera for Altona (Boulder County)
4 Genera with 4 Species
Cheiracanthium C. L. Koch, 1864Longlegged sac spiders1SpeciesTaxom
Dysdera Latreille, 18381SpeciesTaxom
Steatoda Sundevall, 1838False black widows1SpeciesTaxom
Thanatus C. L. Koch, 18451SpeciesTaxom


Species list for Altona (Boulder County)
4 Species
Cheiracanthium mildei L. Koch, 1864North Yellow Sac Spider
Dysdera crocata (Koch, 1838)⇒ Dysdera maurusia Tord Tamerla..., 1873
Steatoda grossa C. L. Koch, 1838Brown house spider
Thanatus striatus C. L. Koch, 1845

Subnodes of Megoperculata with occurrences in Altona (Boulder County)
OrderAraneae
Clerck, 1757
Spider, Spiders, True Spiders		4
4
4		Families
Genera
Species
Taxom