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Ibala arcus
Species of spider From Wikipedia, the free encyclopedia
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Ibala arcus is a species of spider in the family Gnaphosidae.[2] It is a southern African endemic species.[3]
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Distribution
Ibala arcus is distributed across Zimbabwe, Namibia, and South Africa.[3] In South Africa, it is recorded from all provinces at altitudes ranging from 47 to 1,645 m above sea level.[3]
Habitat and ecology
The species is a free-living ground dweller, sampled from the Grassland, Nama Karoo, Savanna, and Succulent Karoo biomes.[3] It has also been sampled from maize fields.[3]
The species mimics velvet ants (Hymenoptera: Mutillidae) with whom they are often caught in pitfall traps.[3]
Description
Ibala arcus is known from both sexes. It is a small spider with average total length of 4-6 mm. The carapace and legs are reddish brown, while the abdomen is black with four white spots dorsally joined to form two longitudinal white strips.[3]
Conservation
Ibala arcus is listed as Least Concern by the South African National Biodiversity Institute due to its wide distribution range.[3] The species is found in more than 10 protected areas.[3]
Taxonomy
The species was originally described by Tucker in 1923 from Warmbaths in Limpopo as Setaphis arcus.[1] It was revised by Fitzpatrick (2009).[3]
References
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