Biology:Pisenor

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Pisenor is a genus of mygalomorph spiders in the family Barychelidae. The genus is known from nine species endemic to Africa, distributed from Zimbabwe to the southern parts of Ethiopia.[1]

It was first described by Eugène Simon in 1889.[2]

Description

Pisenor spiders have body sizes ranging from 15–25 mm. Females are usually 'earth'-colored, varying from yellowish grey to reddish brown to greyish black, with the opisthosoma bearing pale spots or patches.[1]

The anterior lateral eyes are positioned close to the clypeal edge. The eyes are arranged in a group that is wider behind than in front, with the eye tubercle being distinct. A rastellum is absent, and the fovea is recurved. There are two pairs of spinnerets, and the metatarsal preening comb is absent. Males possess a tibial spur on leg I, while females have one row of teeth on the paired claws and males have two rows.[1]

Behavior and ecology

Pisenor species are ground-living burrow dwellers. Very little is known about their behavior, with the only published information being a note by Benoit (1966) who collected P. notius from a burrow with a trapdoor covered by bits of leaves.[1]

Species

As of September 2025 it contains nine species:[3]

  • Pisenor arcturus (Tucker, 1917) – Botswana, Zimbabwe, South Africa
  • Pisenor leleupi (Benoit, 1965) – Democratic Republic of the Congo
  • Pisenor lepidus (Gerstäcker, 1873) – Tanzania
  • Pisenor macequece (Tucker, 1920) – Mozambique
  • Pisenor notius Simon, 1889 (type) – Ethiopia, Botswana, Zimbabwe, South Africa
  • Pisenor plicatus (Benoit, 1965) – Rwanda
  • Pisenor selindanus (Benoit, 1965) – Zimbabwe
  • Pisenor tenuistylus (Benoit, 1965) – Democratic Republic of the Congo
  • Pisenor upembanus (Roewer, 1953) – Democratic Republic of the Congo

References

  1. ↑ 1.0 1.1 1.2 1.3 Dippenaar-Schoeman, A.S.; Haddad, C.R.; Foord, S.H.; Lotz, L.N. (2020). "South African National Survey of Arachnida Photo Identification Guide: The Barychelidae of South Africa". Version 1: 1–9. doi:10.5281/zenodo.6033496.  This article incorporates text available under the CC BY 4.0 license.
  2. ↑ Simon, E. (1889). "Descriptions d'espèces africaines nouvelles de la famille des Aviculariidae.". Actes de la Société Linnéenne de Bordeaux 42: 405–415. 
  3. ↑ Gen. Pisenor Simon, 1889. Natural History Museum Bern. doi:10.24436/2. http://www.wsc.nmbe.ch/genus/461. Retrieved 2025-09-19. 
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Wikidata ☰ Q3004963 entry