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Checklist for Infraclass Megoperculata Börner, 1902
and region Arlington (Tarrant County, Texas, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		9
9
6		Families
Genera
Species		 
Taxom
 

Subclass
 		Micrura
Ehrenberg, 1831
7
7
5		Families
Genera
Species		 
Taxom
 

Infraclass
 		Megoperculata
Börner, 1902
3
3
2		Families
Genera
Species		 
Taxom
 


List of families for Arlington (Tarrant County)
3 Families width 2 Species
Dysderidae (C. L. Koch, 1837)Dysderid spiders1SpeciesTaxom
Salticidae Blackwall, 1842Jumping Spider1SpeciesTaxom
Theridiidae Sundevall, 1833Cobweb And Widow Spiders0SpeciesTaxom


Genera for Arlington (Tarrant County)
3 Genera with 2 Species
Dysdera Latreille, 18381SpeciesTaxom
Metacyrba F. O. P.-Cam..., 18461SpeciesTaxom
Steatoda Sundevall, 1833
False black widows0SpeciesTaxom


Species list for Arlington (Tarrant County)
2 Species
Dysdera crocata (Koch, 1838)⇒ Dysdera maurusia Tord Tamerla..., 1873
Metacyrba taeniola Nicholas Mar..., 1846

Subnodes of Megoperculata with occurrences in Arlington (Tarrant County)
OrderAraneae
Clerck, 1757
Spider, Spiders, True Spiders		3
3
2		Families
Genera
Species
Taxom