Emerton's Bitubercled Cobweaver

Theridula emertoni

"Theridula emertoni" is a species of tangle web spider commonly found in the United States and Canada. Prior to its formal description in 1954, specimens of "T. emertoni" were often classified as "T. opulenta", a species with whom its range overlaps. The species can be reliably distinguished from "T. opulenta" by the epigyne in females or by the pedipalp in males.
Tangle Web Spider - Theridula emertoni This little girl was about 2 mm in size! 

Habitat: In her web on the underside of a leaf in a rural garden
https://www.jungledragon.com/image/87278/tangle_web_spider_-_theridula_emertoni.html Geotagged,Summer,Theridula,Theridula emertoni,United States,spider,tangle web spider

Appearance

Adult females are between 1.7 and 2.8 mm in length. Adult males are between 1.6 and 2.3 mm in length.

References:

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Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassArachnida
OrderAraneae
FamilyTheridiidae
GenusTheridula
SpeciesT. emertoni