Sparassidae  Bertkau, 1872 / Olios  Walckenaer, 1837   5 species

Olios sericeus  (Kroneberg, 1875)


Bulbus in its distal half with a small and narrowly bent embolus, bearing a serrate ridge. Tegulum with a massive apophysis, extending prolaterally beyond the cymbium; prolateral and ventral margins of the apophysis serrated. Single retrolateral tibial apophysis broad, bent dorsad.

Body length male: 9.6–10.7 mm

Epigyne with median slit, the latter diverging regularly posterior, but abruptly anterior, forming wide pit. Internal duct system with a glandular structure close to the copulatory openings, otherwise with simple course, only with a small loop close to fertilisation ducts.

Variation: Median margins of lateral lobes with or without humps in anterior half. Surface of internal duct system more or less furrowed.

Body length female: 9.6-10.7 mm
  No data
Global distribution (WSC 2021): Caucasus (Russia, Georgia, Azerbaijan), Kazakhstan, Central Asia, Iran, Afghanistan
 male  female
Distribution List
Azerbaijan   (Otto, 2020) ||| Georgia   (Otto, 2020) ||| Russia, Southern   (Otto, 2020) |||

Jäger P, Otto S (2007) New records of Olios sericeus (Kroneberg 1875) with notes on its taxonomy and biogeography (Araneae: Sparassidae: Sparassinae) Revista Ibérica de Aracnología 14: 19-24 pdf

Khasayeva S I, Huseynov E F (2019) New records of spiders (Arachnida, Aranei) from Azerbaijan. Euroasian Entomological Journal 18: 357-361 pdf

Mikhailov K G (2013) The spiders (Arachnida: Aranei) of Russia and adjacent countries: a non-annotated checklist. Arthropoda Selecta, Supplement 3: 1-262 pdf

Otto S (2020) Caucasian spiders. A faunistic database on the spiders of the Caucasus Ecoregion. Database version 03.2020. Internet:

WSC (2021) World Spider Catalog. Version 21.5. Natural History Museum Bern, online at (03.01.2021) doi: 10.24436/2 pdf

23-01-2020 Distribution update Detail
23-01-2020 Image insert