The first examples of the spider were first identified by Eugène Simon in the early twentieth century in what is now Southern Sudan, but it was not until 2003 that the species was formally described by Jerzy Prószyński and Wanda Wesołowska.

The pattern on the top of the abdomen varies, with some spiders having lighter patches on a russet background and others being brown and white.

The male has a broad embolus that has a tip that hugs a very distinctive protrusion, or apophysis.

[7] Prószyński and Wesołowska allocated the species to the genus Evarcha, which had been first circumscribed by Simon in 1902.

[10] In 1976, Prószyński placed the genus Evarcha in the subfamily Pelleninae, along with the genera Bianor and Pellenes.

[11] In Wayne Maddison's 2015 study of spider phylogenetic classification, the genus Evarcha was moved to the subtribe Plexippina.

[12] Plexippina is a member of the tribe Plexippini, in the subclade Simonida in the clade Saltafresia.

[15] This designation is not widely accepted and the species remains in the Evarcha genus in the World Spider Catalog.

It is marked with two wide diagonal creamy-white streaks and a scattering of brown bristles.

It has a darker, nearly black, eye field with a triangular white patch divided by a thin dark line and more frequent brown bristles.

The male palpal tibia has long hairs and a short broad protrusion, or tibial apophysis, that has a sharp spike at its end.

It lacks the pattern of the male and has a coat of short dense white hairs.

It has a russet top marked with a lighter irregular stripe that runs from the front to back and a covering of light greyish and brown hairs.

The copulatory openings lead to thin insemination ducts that have slight sclerotization.

It is closely related to Evarcha negevensis, but the shape of the end of the male embolus and the size of the depression in the female epigyne are different.

[28] Unlike some other species in the genus, Evarcha praeclara has been identified in a wide range of environments.

[32] Evarcha spiders live across the world, although those found in North America may be accidental migrants.

[5] The holotype was discovered in 1994 in Ketura the Arabah Valley in Israel, 50 kilometres (31 mi) north of Eilat.

[34] Some of the first specimen used to define Evarcha praecincta were found near to Taiz and Wadi Surdud in 1991.

[18] The first example found in Iran was discovered 50 kilometres (31 mi) northeast of Shiraz in Fars province in 2000, although it was known as Evarcha praecincta.

The first examples that were defined as Sudanese were discovered in Gondokoro and Khor Attar and described by Simon in 1906.