The spider has a brown carapace that has two white streaks on the thorax a black eye field.

The male has a hidden embolus that is shorter than that on the related Langona pilosa.

The female has copulatory organs that resemble Langelurillus ignorabilis but differ in the design of the seminal ducts.

Langona bethae is a jumping spider that was first described by Wanda Wesołowska and Meg Cumming in 2011.

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

The abdomen is dark brown with a stripe down the middle composed of yellow hair that has an irregular and distinctive shape.

The embolus is hidden in a pocket in the cymbium and is coiled into the tip of the palpal bulb.

[6] The copulatory openings are relatively widely spaced and lead to bean-shaped spermathecae.

and there is a single apophysis, or appendage, on the pedipalp tibia, which enables it to be distinguished from other Aelurillinae.

[8] The species resembles the related Langona pilosa, but may be identified by the distinctive pattern on the abdomen.