Seothyra perelegans is a species of spider in the family Eresidae. It is endemic to South Africa.
Seothyra perelegans is endemic to South Africa. The species is recorded from two provinces: Eastern Cape and Free State, with locations including Willowmore and Bothaville.
The species has been sampled from Grassland and Nama Karoo biomes at altitudes ranging from 815 to 1,291 m above sea level.
The species constructs burrow retreat-webs consisting of a silk-lined burrow. Males wander in search of mates.
Seothyra perelegans is known only from the male.
Seothyra perelegans is listed as Data Deficient for taxonomic reasons. The species has a restricted distribution. More sampling is needed to collect the female and more accurately determine the species' range.
The species was originally described by Eugène Simon in 1906 from Bothaville. It was revised by Dippenaar-Schoeman in 1991.