Menneus capensis was originally described from St James in the Western Cape. It is a Western Cape endemic known from more than ten locations, including three protected areas, at altitudes ranging from 7 to 313 metres above sea level.
Habitat and ecology
The species builds small, rectangular expandable webs close to the ground using cribellate silk and holds them with its front legs. They are typically found under boulders adjacent to water. The spider is cryptic by day, resting with its body pressed against vegetation. It has been sampled from the Fynbosbiome as well as Eucalyptus plantations.
The species was originally described by Purcell in 1904 as Avellopsis capensis from St James. The genus Menneus was revised by Coddington et al. in 2012.