Orientattus

Orientattus is a genus of spiders in the jumping spider family Salticidae.[1]

Orientattus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Salticidae
Subfamily: Salticinae
Genus: Orientattus
Caleb, 2020[1]
Species

See text.

Description

Compared to related genera, Orientattus species are distinguished by features of both the male and female genitalia. The male palpal bulb is rounded with a short curved embolus and is borne on a pedipalp with a bifurcated retrolateral tibial apophysis (RTA). Females have C-shaped copulatory openings, no copulatory ducts and double-chambered spermathecae with a large anterior chamber and a smaller posterior chamber. There are also two large 'pockets' on the sides of the posterior border of the epigyne.[2]

Taxonomy

The genus Orientattus was erected in 2020 by John Caleb.[1] In 2018 and 2019, a species found in Sri Lanka and India had been placed in the otherwise African genus Schenkelia as Schenkelia aurantia. However, it was later found that this species differed significantly from the type species of the genus Schenkelia. Three other species, placed in different genera, were found to resemble Schenkelia aurantia. Accordingly, Caleb transferred all four to his new genus, Orientattus. Orientattus is placed in the tribe Plexippini,[2] part of the Salticoida clade of the subfamily Salticinae in Wayne Maddison's 2015 classification of the Salticidae.[3]

Species

As of September 2020, the World Spider Catalog accepted the following extant species:[1]

  • Orientattus aurantius (Kanesharatnam & Benjamin, 2018) (type species) – India, Sri Lanka
  • Orientattus bicuspidatus (Peng & Li, 2003) – Vietnam
  • Orientattus hongkong (Song, Xie, Zhu & Wu, 1997) – China (Hong Kong)
  • Orientattus minutus (Żabka, 1985) – China, Nepal, Vietnam

References
  1. "Gen. Orientattus Caleb, 2020", World Spider Catalog, Natural History Museum Bern, retrieved 2020-09-04
  2. Caleb, J.T.D. (2020), "A new jumping spider genus from South and Southeast Asia (Araneae: Salticidae: Plexippini: Orientattus)", Peckhamia, 200.1: 1–5
  3. Maddison, Wayne P. (2015), "A phylogenetic classification of jumping spiders (Araneae: Salticidae)", Journal of Arachnology, 43 (3): 231–292, doi:10.1636/arac-43-03-231-292
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