Marchena is a genus of jumping spiders only found in the United States. Its only described species, M. minuta,[1] dwells on the barks of conifers along the west coast, especially California, Washington and Nevada.[2]
It forms a monophyletic group with the genera Afraflacilla, Pseudicius and Festucula.[3]
This species can easily be distinguished from others in its range by the tubercles on the first femur of its first legs.[2] M. minuta has a body length of about 4 mm.
The genus name is probably derived from the Spanish city of Marchena, Seville. As witnessed by other generic names, the describers had a habit of naming taxa after places unrelated to the species' distribution. The species name is Latin for "small, minute".