Theridiidae  Sundevall, 1833 / Theridion  Walckenaer, 1805   53 species

Theridion pictum  (Walckenaer, 1802)

Description
Male

Prosoma yellowish, with brown margin and median stripes. Prosoma 1.2-1.6 mm long. Sternum yellowish, with brown margin. Chelicerae yellow-brown. Legs reddish yellow, annulated with brown. Opisthosoma with fine white and brown spots next to dorsal longitudinal band, ventrally spotted with white, with dark points anterior to the spinnerets. Epigastric area markedly bulging.

Body length male: 2.3-3.5 mm
Female

Epigyne ± rectangular. Prosoma 1.4-1.8 mm long. Characters as in male.

Body length female: 3.5-4.8 mm
Additional information

Frequent in relatively damp terrain, in herbaceous and bush layer. Egg sac greyish brown, 3 mm in diameter, with 40 white eggs.

Frequency: Widely distributed

Distribution
  Presence
  No data
Global distribution (WSC 2019): North America, Europe, North Africa, Caucasus, Russia (Europe to Far East), Kazakhstan, Turkemenistan, China, Japan
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Females with a peak in May and June.
Figures
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)

Bosmans R, Vanuytven H, Van Keer J (1994) On two poorly known Theridion species, recently collected in Belgium for the first time (Araneae: Theridiidae). Bull Br Arachnol Soc 9: 236-240

Bosmans R. (unpubl.) Provisional list of spiders of North Africa. Database excerpt Aug. 2019

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 www.european-arachnology.org

Knoflach B (1998) Mating in Theridion varians Hahn and related species (Araneae: Theridiidae). Journal of Natural History 32: 545-604 pdf

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

Le Peru B (2011) The spiders of Europe, a synthesis of data: Volume 1 Atypidae to Theridiidae. Mémoires de la Société Linnéenne de Lyon 2: 1-522 pdf

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

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 (2019) Caucasian spiders. A faunistic database on the spiders of the Caucasus Ecoregion. Database version 10.2019. 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). http://araneae.it. Fragmenta Entomologica 51: 127-152 pdf

Polchaninova N, Prokopenko E (2019) An updated checklist of spiders (Arachnida: Araneae) of Left-Bank Ukraine. Arachnologische Mitteilungen 57: 60-64 & App pdf

Roberts M J (1995) Spiders of Britain and Northern Europe. Collins Field Guide Bath

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

World Spider Catalog (2019) World Spider Catalog, version 20.5. Natural History Museum Bern, online at http://wsc.nmbe.ch (20.09.2019) doi: 10.24436/2

Updates
21-10-2015 Distribution update Old value
01-12-2013 Distribution update Old value