Ilisoa is a genus of in the family Cyatholipidae. All species are endemism to the Western Cape province of South Africa.
Description
Spiders in the genus
Ilisoa are small, with body length less than 3 mm. The
carapace is domed with the highest area behind the ocular area. The thoracic fovea forms a deep, longitudinal pit. The posterior median eyes are widely separated from the posterior lateral eyes by a distance greater than twice the diameter of the posterior median eyes. The sternum is wider than long.
The opisthosoma is ovoid and bears dorsal and dorsolateral rows of slender bristles. The legs are slender with femur I approximately equal to carapace length. The leg formula is 1243.
Ecology and behavior
Members of
Ilisoa build small horizontal sheet webs in vegetation. They are web dwellers that hang beneath their webs in shaded areas.
Distribution and habitat
All three species are restricted to the Western Cape province of South Africa. They occur in coastal and montane areas, inhabiting the Fynbos
Biome. Some species are found on sand dunes and in forest areas.
Species
, three species are recognized:
