Runcinia depressa

Flat Runcinia Grass Crab Spider
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Thomisidae
Genus: Runcinia
Species:
R. depressa
Binomial name
Runcinia depressa
Simon, 1906[1]

Runcinia depressa is a species of spider in the family Thomisidae.[1] It is commonly known as the flat Runcinia grass crab spider and has a wide distribution throughout Africa.[2]

Distribution

Runcinia depressa occurs throughout Africa.[1]

In South Africa, the species has been recorded from all provinces except Eastern Cape. It has been found at Roodeplaatdam Nature Reserve, Ndumo Nature Reserve, Hluhluwe Nature Reserve, Mosdene Nature Reserve, and Loskop Dam Nature Reserve.[2]

Habitat and ecology

Runcinia depressa are free-living on plants and very common grass dwellers.[2]

The species has been sampled from Fynbos, Grassland, Savanna, Indian Ocean Coastal Belt, and Nama Karoo biomes at altitudes ranging from 4 to 1,560 m. It has also been collected from pistachio orchards, potatoes, sugar cane, and strawberry fields.[2]

Description

Conservation

Runcinia depressa is listed as Least Concern due to its wide geographical range. The species is protected in several reserves including Roodeplaatdam Nature Reserve, Ndumo Nature Reserve, Hluhluwe Nature Reserve, Mosdene Nature Reserve, and Loskop Dam Nature Reserve.[2]

Taxonomy

Runcinia depressa was described by Eugène Simon in 1906 from Sudan.[3] The species was revised by Dippenaar-Schoeman in 1980 and 1983 and is known from both sexes.[4][5]

References

  1. ^ a b c "Runcinia depressa Simon, 1906". World Spider Catalog. Natural History Museum Bern. doi:10.24436/2. Retrieved 2025-10-01.
  2. ^ a b c d e Dippenaar-Schoeman, A.S.; Haddad, C.R.; Foord, S.H.; Lotz, L.N. (2020). The Thomisidae of South Africa. Part 2 My-R. Version 1. South African National Survey of Arachnida Photo Identification Guide. p. 52. doi:10.5281/zenodo.7513276. This article incorporates text available under the CC BY 4.0 license.
  3. ^ Simon, E. (1906). "Ergebnisse der mit Subvention aus der Erbschaft Treitl unternommenen zoologischen Forschungsreise Dr F. Werner's nach dem ägyptischen Sudan und Nord-Uganda. VII. Araneida". Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-naturwissenschaftliche Klasse, Wien. 115: 1159–1176.
  4. ^ Dippenaar-Schoeman, A.S. (1980). "The crab-spiders of southern Africa (Araneae: Thomisidae). 1. The genus Runcinia Simon, 1875". Journal of the Entomological Society of South Africa. 43: 303–326.
  5. ^ Dippenaar-Schoeman, A.S. (1983). "The spider genera Misumena, Misumenops, Runcinia and Thomisus (Araneae: Thomisidae) of southern Africa". Entomology Memoir, Department of Agriculture Republic of South Africa. 55: 1–66.