First described in 2020 by Alexandre Salgado and Gustavo Ruiz, the spider is small, typically between 3.38 and 4.01 mm (0.133 and 0.158 in) in total length.

The spider lives on sandstone and has generally a coloration that blends into the rock.

[4] In 2017, the genus was grouped with 25 other genera of jumping spiders under the name Colonines.

The abdomen has a thick brown stripe down the middle of its back and pale edges.

The palpal bulb has an elongated retrolateral tibial apophysis that is reminiscent of a finger.

The embolic disc is narrow and has a straight spike-like protrusion that extends as far as the embolus.

The spider shares attributes with these species, including the way that the spermathecae are circled by the copulatory ducts.

[13] The orange scales on the palpal bulb are also unusual, the other species generally being white,[9] Marma wesolowskae is endemic to Brazil.