Linyphiidae  Blackwall, 1859 / Thyreosthenius  Simon, 1884   2 species

Thyreosthenius biovatus  (O. P.-Cambridge, 1875)

Male palp with 2 ± equally long tibial apophyses. Epigyne ± quadrangular, reaching beyond epigastric furrow. Prosoma yellow-brown, male: with very high bipartite spheroidal cephalic lobe. Legs yellow-orange. Opisthosoma light grey. Body length male: 1.6-1.9 mm
Body length female: 1.8-2.2 mm
Additional information
living together with ants
Character states from linyphiid key
  No data
Global distribution (WSC 2019): Europe
 male  female

Blagoev G, Deltshev C, Lazarov S, Naumova M (2018) The spiders (Araneae) of Bulgaria. Version: August 2018. National Museum of Natural History, Bulgarian Academy of Sciences. Online at (accessed on 10.9.2018)

Cera I (2018) The checklist of Latvian spiders (Arachnida: Araneae). Environmental and Experimental Biology 16: 139-152 pdf

Helsdingen P J van (2010a) Araneae. In: Fauna Europaea Database (Version 2010.1), online at

Locket G H, Millidge A F (1953) British Spiders 2. Ray Soc London

Løvbrekke H (unpubl.)

Roberts M J (1987) The spiders of Great Britain and Ireland. Volume 2: Linyphiidae and checklist. Harley Books Colchester

Wiehle H (1960a) Spinnentiere oder Arachnoidea (Araneae). XI. Micryphantidae-Zwergspinnen. Tierwelt Deutschlands 47: 1-620

World Spider Catalog (2019) World Spider Catalog, version 20.0. Natural History Museum Bern, online at (20.01.2019) doi: 10.24436/2

12-07-2018 Image insert
13-03-2018 Image insert