Marusyllus mongolicus (Prószyński, 1968)
Description
Male
Prosoma dark brown, eye field covered with yellowish scales and a few white ones concentrated into 3 white longitudinal stripes, row of white, yellow and grey bristles above eyes. Opisthosoma dorsally greyish-brownish-black, covered with white scales with a silver or sometimes yellow gleam. Legs long.
Prosoma length: 1.58 mm, prosoma width: 1.28 mm.
Female
Prosoma black or brown-olive-grey, covered with white, yellowish and black scales. Opisthosoma dorsally light fawn, covered with white and black scales arranged in transverse stripes. Legs white yellow. Epigyne: copulatory openings oval and small, the ridge between them flat, vaginal roof is small within distinctly procurved posterior edge.
Prosoma length: 1.48 mm, prosoma width: 1.28 mm.
Distribution
Figures
Pedipalp, prolateral view
(Logunov & Marusik 2003)
Pedipalp, retrolateral view
(Logunov & Marusik 2003)
Pedipalp, retrolateral view
(Logunov & Marusik 2003)
Bulbus, prolateral view
(Logunov & Marusik 2003)
Tibial apophysis, retrolateral view
(Logunov & Marusik 2003)
Leg I
(Logunov & Marusik 2003)
Epigyne
(Logunov & Marusik 2003)
Vulva
(Logunov & Marusik 2003)
-- Caption missing --
(Logunov & Marusik 2003)
Distribution List
"No references" does not mean that the species does not occur in this country, but that we have not yet inserted the reference for it. We are working on it.
References
Logunov D V, Marusik YM (2003) A revision of the genus Yllenus Simon, 1868 (Arachnida, Araneae, Salticidae). KMK Scientific Press Moscow, 168 pp 
Mikhailov K G (2013) The spiders (Arachnida: Aranei) of Russia and adjacent countries: a non-annotated checklist. Arthropoda Selecta, Supplement 3: 1-262
Otto S (2022) Caucasian spiders. A faunistic database on the spiders of the Caucasus Ecoregion. Database version 02.2022. Internet: caucasus-spiders.info.
Ponomarev A V (2022) Spiders (Arachnida: Araneae) of the southeast of the Russian Plain: catalogue, the fauna specific features. SSC RAS Publishers, Rostov-on-Don, 640 pp.
WSC (2024) World Spider Catalog. Version 25.0. Natural History Museum Bern, online at http://wsc.nmbe.ch (22.01.2024) doi: 10.24436/2