About Myrmarachne formicaria (De Geer, 1778)
Myrmarachne formicaria, first described by De Geer in 1778, is a species of jumping spider belonging to the family Salticidae. This spider mimics ants, and it is one of the few species in the genus Myrmarachne that occurs outside of tropical regions. M. formicaria has a native Palearctic distribution, and it has been introduced to the United States. It was first recorded in the United States on 16 August 2001 in Trumbull County, Ohio. Since that first recording, the species has spread to the additional US states of Pennsylvania and New York.