Theridiidae  Sundevall, 1833 / Theridion  Walckenaer, 1805   63 species

Theridion asopi Vanuytven, 2014

Description
Male

Palp: Conductor distinctly bent. Prosoma length: 1.5 mm.

Body length male: 3.4 mm
Female

Epigyne: distance between copulatory openings 0.05 mm (distance smaller in T. betteni), width of epigynal pit: 0.13 mm (wider in T. betteni). Prosoma length: 1.2 mm.

Body length female: 3.8 mm
Distribution
  Presence
  No data
Global distribution (WSC 2026): France, Belgium, Netherlands, Germany, Switzerland, Italy
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
Distribution List
Belgium   (Bosmans & Van Keer, 2017) ||| France   (Vanuytven, 2014) ||| Germany   (Blick et al., 2016) ||| Italy   (Isaia et al., 2025) ||| Netherlands   (Vanuytven, 2014; van Helsdingen, 2025a) ||| Switzerland   (Hänggi & Straub, 2016) |||
References

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

Bosmans R, Van Keer K (2017) Een herziene soortenlijst van de Belgische spinnen (Araneae). Nieuwsbrief van de Belgische Arachnologische Vereniging 32: 39-69 pdf

Hänggi A, Straub S (2016) Storage buildings and greenhouses as stepping stones for non-native potentially invasive spiders (Araneae) - a baseline study in Basel, Switzerland Arachnologische Mitteilungen 51: 1-8 pdf

Helsdingen P J van (2025a) Catalogus van de Nederlandse spinnen. Versie 2025.1. 249 pp. pdf

Isaia M, Tolve M, Pantini P (2025) Araneae.it: 2.0: the new updated version of the digital catalog of the Italian spiders and other arachnids (Arachnida: Araneae, Opiliones, Scorpiones, Pseudoscorpiones, Palpigradi, Solifugae). Fragmenta Entomologica 57: 197-204 pdf

Roberts M J (1998) Spinnengids. Tirion, Baarn, Netherlands, 397 pp. pdf

Vanuytven H (2014) Theridion asopi n. sp., a new member of the Theridion melanurum group (Araneae: Theridiidae) in Europe. Arachnology 16: 127-134 pdf

WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (13.2.2026) doi: 10.24436/2 pdf

Updates
29-10-2025 Distribution update Detail
16-02-2016 Distribution update Detail
02-02-2016 Distribution update Detail
05-08-2014 Distribution update Detail
05-08-2014 Image insert