Steatoda triangulosa (Walckenaer, 1802)
Description
Male
Conductor long and bent. Tibia of male palpal longer than cymbium. Prosoma red-brown, wrinkled, 1.6-2 mm long. Sternum red-brown, wrinkled. Chelicerae brown, shiny. Legs yellowish, to bright red-brown, all segments sometimes distally darkened. Opisthosoma dark brown to almost black, pattern yellowish, sometimes broken into single spots.
Body length male: 3.5-5 mmFemale
Epigyne small and rounded. Prosoma 1.8-2 mm long. Colouration as in male.
Body length female: 3.5-8.6 mmAdditional information
Only in buildings in Central Europe, at dry, sunny places under stones in the south, in caves, dunes, forests, garrigue, fallow land, marshes, rocky seashore, littoral salty areas.
Since a few decades, this species shows some spreading tendencies within Europe. Nevertheless, it shall not be listed as alien or invasive because it is native for Europe.
Distribution
Phenology
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Figures
Pedipalp, ventral view
(Pesarini unpubl.)
Pedipalp, ventral view
(Roberts 1995)
Pedipalp, ventral view
(Wiehle 1937)
Pedipalp, ventral view
(Yoshida 2001)
Pedipalp, ventral view
(Taberlet unpubl.)
Pedipalp, prolateral view
(Taberlet unpubl.)
Pedipalp, retrolateral view
(Taberlet unpubl.)
Epigyne
(Pesarini unpubl.)
Epigyne
(Roberts 1995)
Epigyne
(Wiehle 1937)
Epigyne
(Yoshida 2001)
Epigyne
(Taberlet unpubl.)
Epigyne
(Taberlet unpubl.)
Epigyne
(Taberlet unpubl.)
Epigyne, with mating plug
(Taberlet unpubl.)
Vulva
(Wiehle 1937)
Vulva
(Yoshida 2001)
Vulva, dorsal view
(Taberlet unpubl.)
Vulva, posterior view
(Taberlet unpubl.)
Habitus
(Wiehle 1937)
Habitus, dorsal view
(Faúndez & Carvajal 2016)
Distribution List
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, Van Keer J, Russell-Smith A, Hadjiconstantis M, Komnenov M, Bosselaers J, Huber S, McCowan D, Snazell R, Decae A, Zoumides C, Kielhorn K-H, Oger P (2019c) Spiders of Cyprus (Araneae). A catalogue of all currently known species from Cyprus. Newsletter of the Belgian Arachnological Society 34, Suppl. 1: 1-173
Bosmans R. (unpubl.) Provisional list of spiders of North Africa. Database excerpt Aug. 2019
Branco V V, Morano E, Cardoso P (2019) An update to the Iberian spider checklist (Araneae). Zootaxa 4614: 201-254
Cera I (2018) The checklist of Latvian spiders (Arachnida: Araneae). Environmental and Experimental Biology 16: 139-152
Danışman T, Kunt K B, Özkütük R S (2021a) The checklist of the spiders of Turkey. Version 2021 [last updated 1 January 2021], online at http://www.spidersofturkey.info
Faúndez E I, Carvajal M A (2016) The spider genus Steatoda Sundevall, 1833 (Araneae: Theridiidae) in the State of North Dakota (USA). Revista Ibérica de Aracnología 29: 83-85
Geci D, Naumova M (2021b) A preliminary checklist of the spiders of Kosovo (Arachnida: Araneae). Ecologia Balkanica, Special Edition 4: 11-28
Kostanjšek R, Kuntner M (2015) Araneae Sloveniae: a national spider species checklist. ZooKeys 474: 1-91
Kreuels M, Staudt A, Christian S (2019) Die Spinnenfauna von Luxemburg – eine Zusammenstellung der Nachweise aus den Jahren 1906-2018 (Arachnida: Araneae). Bulletin de la Société des naturalistes luxembourgeois 121: 203-230
Lissner J, Scharff N (2019) Danish Spiders. Online at http://www.danmarks-edderkopper.dk
Otto S (2020) Caucasian spiders. A faunistic database on the spiders of the Caucasus Ecoregion. Database version 03.2020. 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
Pesarini C (unpubl.)
Pfliegler W A, Schönhofer A, Niedbała W, Vella P, Sciberras A, Vella A (2017) New records of mites (Acari) and harvestmen (Opiliones) from Malta with a preliminary checklist of Maltese Arachnida. Soil Organisms 89: 85-110
Polchaninova N, Prokopenko E (2019) An updated checklist of spiders (Arachnida: Araneae) of Left-Bank Ukraine. Arachnologische Mitteilungen 57: 60-64 & App
Roberts M J (1995) Collins Field Guide: Spiders of Britain & Northern Europe. HarperCollins, London, 383 pp.
Rozwałka R, Rutkowski T, Bielak-Bielecki P (2013) New data on introduced and rare synanthropic spider species (Arachnida: Araneae) in Poland. Annales Universitatis Mariae Curie-Skłodowska, Lublin-Polonia 68: 127-150
Samu F, Szinetár C (1999) Bibliographic check list of the Hungarian spider fauna. Bulletin of the British Arachnological Society 11: 161-184
Stanković M, Ćurĉić M (2020) New species in the arachnofauna of Bosnia and Herzegovina from the protected habitat of Gromiţelj, Velino Selo. Archives for Technical Sciences 22: 67-78
Taberlet J-P (unpubl.)
Wiehle H (1937) Spinnentiere oder Arachnoidea, VIII. 26: Familie Theridiidae oder Haubennetzspinnen (Kugelspinnen). Die Tierwelt Deutschlands 33: 119-222
WSC (2021) World Spider Catalog. Version 22.5. Natural History Museum Bern, online at http://wsc.nmbe.ch (22.09.2021) doi: 10.24436/2
Yoshida H (2001) The spider genera Robertus, Enoplognatha, Steatoda and Crustulina (Araneae: Theridiidae) from Japan. Acta Arachnologica 50: 31-48
Updates
| 20-06-2021 | Distribution insert | Detail |
| 26-01-2021 | Image insert | |
| 26-01-2021 | Gallery image insert | |
| 08-06-2020 | Distribution update | Detail |
| 06-05-2020 | Distribution insert | Detail |
| 24-01-2017 | Distribution update | Detail |
| 30-12-2016 | Image insert | |
| 13-05-2014 | Distribution update | Detail |
| 15-04-2013 | Distribution update | Detail |