Emerton's Bitubercled Cobweaver

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. opelenta, 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.