Theridiidae  Sundevall, 1833 / Theridion  Walckenaer, 1805   63 species

Theridion boesenbergi  Strand, 1904

Description
Male

Conductor distally with 2 long tips. Prosoma blackish, with darker margins. Sternum blackish. Chelicerae yellowish. Legs yellowish, annulated with black. Opisthosoma blackish, laterally with white spots, dorsally with brighter dark margined median band, ventrally with large white spot.

Body length male: 2.0 mm
Female

Epigyne with posteriorly distinctly bulged groove. Vulva with long and complicated convoluted entrance ducts. 

Body length female: 2.0-2.5 mm
Additional information

Under stones and on lower twigs of conifers, in the mountains up to 1800 m

Distribution
  Presence
  No data
Global distribution (WSC 2025): Europe, Caucasus
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
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.

Austria   (Knoflach & Thaler, 1998) ||| Bulgaria   (Blagoev et al., 2018) ||| Czechia   (Růžička & Řezáč, 2022a) ||| France   (Le Peru, 2007) ||| Germany   (Blick et al., 2016) ||| Italy   (Pantini & Isaia, 2019) ||| Poland   (Wiśniewski & Wesołowska, 2017) ||| Romania   (Weiss & Petrișor, 1999) ||| Russia, Southern   (Otto, 2022) ||| Russia, Western   (no references) ||| Slovakia   (Gajdoš et al., 1999) ||| Slovenia   (Kostanjšek & Kuntner, 2015) ||| Switzerland   (Maurer & Hänggi, 1990) ||| Ukraine   (Mikhailov, 2013) |||
References

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 http://www.nmnhs.com/spiders-bulgaria/ (accessed on 10.9.2018) pdf

Blick T, Finch O-D, Harms K H, Kiechle J, Kielhorn K-H , Kreuels M, Malten A, Martin D, Muster C, Nährig D, Platen R, Rödel I, Scheidler M, Staudt A, Stumpf H, Tolke D (2016) Rote Liste und Gesamtartenliste der Spinnen (Arachnida: Araneae) Deutschlands. 3. Fassung, Stand April 2008, einzelne Änderungen und Nachträge bis August 2015. Naturschutz und Biologische Vielfalt 70/4: 383-510 pdf

Dolejš P, Rückl K (2017) Two rare spider species (Araneae: Araneidae, Theridiidae) found in the Šumava Mts. Journal of the National Museum (Prague), Natural History Series 186: 85-92 pdf

Gajdoš P, Svatoň J, Sloboda J (1999) Katalóg pavúkov Slovenska. Catalogue of Slovakian spiders. Ústav kr. ekol. SAV, Bratislava, 337 pp.

Knoflach B, Thaler K (1998) Kugelspinnen und verwandte Familien von Österreich: ökofaunistische Übersicht (Araneae: Theridiidae, Anapidae, Mysmenidae, Nesticidae). Stapfia 667-712 pdf

Kostanjšek R, Kuntner M (2015) Araneae Sloveniae: a national spider species checklist. ZooKeys 474: 1-91 pdf

Le Peru B (2007) Catalogue et répartition des araignées de France. Revue Arachnologique 16: 1-468 pdf

Maurer R, Hänggi A (1990) Katalog der schweizerischen Spinnen. Documenta Faunistica Helvetiae 12 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 (2022) Caucasian spiders. A faunistic database on the spiders of the Caucasus Ecoregion. Database version 02.2022. Internet: caucasus-spiders.info.

Pantini P, Isaia M (2019) Araneae.it: the online catalog of Italian spiders, with addenda on other arachnid orders occurring in Italy (Arachnida: Araneae, Opiliones, Palpigradi, Pseudoscorpionida, Scorpiones, Solifugae). Fragmenta Entomologica 51: 127-152 pdf

Růžička V, Řezáč M (2022a) Seznam pavouků České republiky. List of spiders of the Czech Republic. Online at https://www.arachnology.cz/seznam-pavouku-cr-26.html and https://www.arachnology.cz/en/seznam-pavouku-cr-26.html pdf

Thaler K (1966) Fragmenta Faunistica Tirolensia (Diplopoda, Arachnida). Berichte des Naturwissenschaftlich-Medizinischen Vereins in Innsbruck 54: 151-157 pdf

Weiss I, Petrișor A (1999) List of the spiders (Arachnida: Araneae) from Romania. Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa” 41: 79-107 pdf

Wiehle H (1937) Spinnentiere oder Arachnoidea, VIII. 26: Familie Theridiidae oder Haubennetzspinnen (Kugelspinnen). Die Tierwelt Deutschlands 33: 119-222 pdf

Wiśniewski K, Wesołowska W (2017) Rare spider species (Araneae) from the Giant Mountains and the Izera Mountains – new records for the fauna of Poland. Fragmenta Faunistica 59: 115-120 pdf

WSC (2025) World Spider Catalog. Version 26. Natural History Museum Bern, online at http://wsc.nmbe.ch (28.2.2025) doi: 10.24436/2 pdf

Updates
30-10-2025 Distribution update Detail
04-06-2025 Distribution update Detail
11-06-2023 Distribution update Detail
08-01-2018 Image insert
31-03-2017 Image insert
31-03-2017 Distribution update Detail
15-04-2013 Distribution update Detail