Ilisoa
Genus of spiders
From Wikipedia, the free encyclopedia
Ilisoa is a genus of spiders in the family Cyatholipidae. All species are endemic to the Western Cape province of South Africa.[2][3]
| Ilisoa | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Cyatholipidae |
| Genus: | Ilisoa Griswold, 1987[1] |
| Type species | |
| Ilisoa knysna Griswold, 1987[1] | |
| Diversity | |
| 3 species | |
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.[3]
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.[3]
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.[3]
Distribution and habitat
Species
As of September 2025[update], three species are recognized:[2]
- Ilisoa conjugalis Griswold, 2001 – South Africa
- Ilisoa hawequas Griswold, 1987 – South Africa
- Ilisoa knysna Griswold, 1987 – South Africa (type species)
