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Checklist for Infraclass Megoperculata Börner, 1902
and region Twin Lakes (Mahnomen County, Minnesota, USA)


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

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

Infraclass
 		Megoperculata
Börner, 1902
5
5
5		Families
Genera
Species		 
Taxom
 


List of families for Twin Lakes (Mahnomen County)
5 Families width 5 Species
Dysderidae C. L. Koch, 1837Dysderid spiders1SpeciesTaxom
Gnaphosidae Pocock, 1898Flat-bellied ground spiders1SpeciesTaxom
Tetragnathidae Menge, 1866Elongated Orb Weavers1SpeciesTaxom
Theridiidae Sundevall, 1833Cobweb And Widow Spiders1SpeciesTaxom
Thomisidae (Sundevall, 1833)Crab Spider1SpeciesTaxom


Genera for Twin Lakes (Mahnomen County)
5 Genera with 5 Species
Dysdera Latreille, 19101SpeciesTaxom
Micaria Westring, 18311SpeciesTaxom
Tetragnatha Latreille, 1850Four-jawed spider1SpeciesTaxom
Theridion Walckenaer, 1882Tangle-Web Spiders1SpeciesTaxom
Xysticus Koch, 1877Ground Crab Spider1SpeciesTaxom


Species list for Twin Lakes (Mahnomen County)
5 Species
Dysdera nomada Eugène Simon, 1910Stocky cerith
Micaria pulicaria Sundevall, 1831Glossy ant spider
Tetragnatha laboriosa Hentz, 1850Longjawed orb weavers
Theridion murarium James Henry ..., 1882
Xysticus obscurus (Collett, 1877)⇒ Xysticus rainbowi Embrik Strand, 1901

Subnodes of Megoperculata with occurrences in Twin Lakes (Mahnomen County)
OrderAraneae
Clerck, 1757
Spider, Spiders, True Spiders		5
5
5		Families
Genera
Species
Taxom