First described in 2020 by Mikhail Omelko, Yuri Marusik and Robin Lyle, the spider is small, with a typical length between 2.8 and 3.17 mm (0.110 and 0.125 in).

The female has a epigyne that lacks pockets but has a thicker septal stem than Diphya foordi, and the male has a very long, thin projection that extends from the palpal bulb beyond the cymbium and a very short embolus.

[5] By combining molecular analysis with morphological study, Fernando Alvarez-Padilla and Gustavo Hormiga concluded that the genus is sister to Chrysometa within a clade.

A few specimens have a pattern of spots and lines which are barely visible as their abdomen is generally lighter.

[7] The palpal bulb has a pronounced long tibia, four times longer than it is wide, and a very short embolus.

Particularly, the length of the protrusions from the male palpal bulb clearly mark out the species against other examples found in South Africa.

The epigyne is most similar to Diphya foordi, differing in having a thicker septal stem.

Examples have been found in the Entabeni and ithala Game Reserves, and Lekgalameetse Provincial Park.

[13] It is the second most common of its genus in South Africa after Diphya simoni, although restricted to the eastern side of the country.

[12] Diphya spiders, like other tetragnathids that build webs, prefers to live in areas that are rich with water.

[14] Diphya wesolowskae thrives in a range of environments, including grassland, plantations and forests.