U. koponeni has different spermathecal chambers, longer spinnerets, and long abdominal hairs.

[3] Uroballus koponeni has been described from one female and two immatures, which were collected in 1987, by beating foliage in secondary forest in Kampong Kuap, near Kuching, Sarawak, Borneo.

[2] The species is named after Finnish arachnologist Seppo Koponen, who turned 70 at the year of description.

This species has the longest spinnerets of any Uroballus, and indeed of any salticid.

This article related to jumping spiders (Salticidae) is a stub.