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Subfamily Erigoninae - Dwarf Spiders

tiny black spider - Collinsia ksenius - male Walckenaeria carolina - male redbud spiders Spider - Erigone dentosa - female Dwarf Spider - Masoncus conspectus - male tiny orange-red spider Linyphiid--voucher image - Grammonota inornata - female Goneatara nasutus - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Linyphiidae (Sheetweb and Dwarf Spiders)
Subfamily Erigoninae (Dwarf Spiders)
Other Common Names
In the United States they are called "dwarf spiders," in England "money spiders," and in German they are known under the common name of "Zwergspinnen."(1)
About 650 species and 122 genera of erigonines known in America north of Mexico. (1)
1 to 6 mm (most are about 2 mm)
Internet References
(1) PDF Article, Gustavo Hormiga - Higher Level Phylogenetics of Erigonine Spiders.

(2) The LinEpig project displays digital images of the epigynes (female external sex organs) for identified specimens of Erigoninae in North America.