It is similar to other related species, particularly Langelurillus namibicus, but can be distinguished by its widely-spaced copulatory openings and short seminal ducts.

Langelurillus cedarbergensis is a jumping spider that was first described by Charles Haddad and Wanda Wesołowska in 2013.

[4] In 2015, Wayne Maddison listed the genus in the subtribe Aelurillina, which also contained Aelurillus, Langona and Phlegra, in the tribe Aelurillini, within the subclade Saltafresia in the clade Salticoida.

[5] In 2016, Jerzy Prószyński placed the same genera in a group named Aelurillines based on the shape of the spiders' copulatory organs.

The copulatory openings are also to the back of the epigyne leading to short seminal ducts.

It most resembles Langelurillus namibicus but differs in that the copulatory openings are wide apart and the seminal ducts short.