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Thiratoscirtus elgonensis

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Taxonomy

Thiratoscirtus elgonensis is a species of jumping spider that was first described by Angelika Dawidowicz and Wanda Wesołowska in 2016.[1] One of over 500 different species identified by Wesołowska in her career, it is named for the Mount Elgon, where t was first found.[2][3] They allocated the spider to the genus Thiratoscirtus, first circumscribed in 1909 by Eugène Simon. The genus is very diverse and contains many monophyletic groups.[4]

Thiratoscirtus is a member of the subtribe Thiratoscirtina in the tribe Aelurillini.[5] The genus is closely related to Nimbarus.[6] In 2016, Mellissa Bodner and Wayne Maddison proposed a subfamily Thiratoscirtinae for the genus and its related genera.[7] This overlapped with a group of genera named Thiratoscirtines after the genus, created by Jerzy Prószyński in 2017.[8] Phylogenetic analysis has shown that the genus is related to the genera Alfenus, Bacelarella, Longarenus and Malloneta.[9] It is likely to have diverged between 16.3 and 18.7 million years ago.[10] Maddison allocated the tribe to the subclade Simonida in the clade Saltafresia in the clade Salticoida.[11]

Description

Thiratoscirtus elgonensis is a medium-sized spider. The spider's body is divided into two main parts:a cephalothorax and an abdomen.[12] The male has a cephalothorax that measures typically between 2.0 and 2.5 mm (0.08 and 0.10 in) in length and 1.6 and 1.9 mm (0.06 and 0.07 in) in width. The carapace, the hard upper part of the cephalothorax, is a moderately high oval that is generally brown and covered in brown hair. It is marked with a light band across the middle and white streaks formed by hairs on the sides. There is a furrow-like depression in the centre of carapace. A black field surrounds the eyes that is covered in black hairs, with a few longer brown bristles visible particularly around the forward eyes. The sternum, the underside of the cephalothorax, is brown. Its face, or clypeus, is low and light brown with light hairs. Its mouthparts are brown, with paler tips on the labium and maxillae while chelicerae are marked by having a single tooth at the back.[3]

The spider's abdomen is a small oval that measures between 2.1 and 2.7 mm (0.08 and 0.11 in) long and between 1.4 and 1.8 mm (0.06 and 0.07 in) wide. It is a generally brown oval with a pattern of yellowish chevrons towards the rear. The chevrons are covered in yellowish hairs, the remainder of the abdomen with brown hairs. The sides are whitish and the underside yellowish and marked with brown markings. The spider's spinnerets are light brown, as are its legs. The legs have long thin brown hairs and a single spine.[3]

The pedipalps, sensory organs near the mouth, are small and covered in long dense hairs. The male copulatory organs

References

Citations

  1. ^ World Spider Catalog (2021). "Thiratoscirtus elgonensis Dawidowicz & Wesołowska, 2016". World Spider Catalog. 22.5. Bern: Natural History Museum. Retrieved 14 December 2021.
  2. ^ Wiśniewski 2020, p. 6.
  3. ^ a b c Dawidowicz & Wesołowska 2016, p. 457.
  4. ^ Pett, Iyomi & Mbende 2024, p. 155.
  5. ^ Maddison 2015, p. 280.
  6. ^ Szűts & Maddison 2021, p. 124.
  7. ^ Prószyński 2017, p. 109.
  8. ^ Prószyński 2017, p. 105.
  9. ^ Bodner & Maddison 2016, p. 219.
  10. ^ Bodner & Maddison 2016, p. 224.
  11. ^ Maddison 2015, p. 278.
  12. ^ Dawidowicz & Wesołowska 2016, p. 463.

Bibliography

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