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Checklist for Infraclass Megoperculata Börner, 1902
and region Alameda (Alameda County, California, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		5
6
6		Families
Genera
Species		 
Taxom
 

Subclass
 		Micrura
Ehrenberg, 1831
4
5
5		Families
Genera
Species		 
Taxom
 

Infraclass
 		Megoperculata
Börner, 1902
4
5
5		Families
Genera
Species		 
Taxom
 


List of families for Alameda
4 Families width 5 Species
Thomisidae Sundevall, 1833Crab Spider2SpeciesTaxom
Salticidae Blackwall, 1842Jumping Spider1SpeciesTaxom
Philodromidae Thorell, 1870False crab spiders1SpeciesTaxom
Theridiidae (Sundevall, 1833)Cobweb And Widow Spiders1SpeciesTaxom


Genera for Alameda
5 Genera with 5 Species
Bassaniana Strand, 1880Bark crab spiders1SpeciesTaxom
Mecaphesa Simon, 19331SpeciesTaxom
Phidippus C. L. Koch, 18831SpeciesTaxom
Philodromus Walckenaer, 1884Running Crab Spider1SpeciesTaxom
Steatoda Sundevall, 1901False black widows1SpeciesTaxom


Species list for Alameda
5 Species
Bassaniana versicolor Eugen von Ke..., 1880Bark Crab Spider
Mecaphesa coloradensis Willis J. Ge..., 1933
Phidippus johnsoni Peckham & Pe..., 1883Johnson jumper
Philodromus californicus Keyserling, 1884Guinea ant
Steatoda grandis (Richard C. B..., 1901)⇒ Steatoda mexicana Herbert Walt..., 1957

Subnodes of Megoperculata with occurrences in Alameda
OrderAraneae
Clerck, 1757
Spider, Spiders, True Spiders		4
5
5		Families
Genera
Species
Taxom