Sardinidion blackwalli (O. Pickard-Cambridge, 1871)
Description
Embolus very long, forming a large loop. Epigynal groove longer than wide. Prosoma yellow, with darkened head region and margin. Sternum blackish, brighter median. Chelicerae yellowish. Legs yellowish, bright with slender brown rings. Opisthosoma with very variable brown-black pattern, dark spot in anterior third of opisthosoma large (sometimes extended to whole dorsal side) and with convex anterior part.
Body length male: 2.3-3 mmBody length female: 2.5-3.0 mm
Additional information
mostly under bark
Frequency: often overlooked
Distribution
Phenology
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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Figures
Pedipalp
(Wiehle 1937)
Pedipalp, ventral view
(Roberts 1995)
Pedipalp, ventral view
(Locket & Millidge 1953)
Pedipalp, retrolateral view
(Crespo et al. 2018)
Pedipalp, retrolateral view
(Seropian et al. 2024c)
Epigyne
(Roberts 1995)
Epigyne
(Wiehle 1937)
Epigyne
(Locket & Millidge 1953)
Epigyne
(Crespo et al. 2018)
Vulva
(Wiehle 1937)
Habitus
(Wiehle 1937)
Habitus
(Locket & Millidge 1953)
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.
References
Benhacene R, Adjami A, Hadjeb A, Kermiche K, Ouakid M L (2023) Bibliographic checklist of the Algerian spider fauna (Araneae). Zootaxa 5352: 301-357 
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 (2003) A checklist of the spiders of Tunisia, with description of a new species of Palliduphantes Saaristo & Tanasevitch (Araneae: Linyphiidae). Kaupia - Darmstädter Beiträge zur Naturgeschichte 12: 89-109
Bosmans R, Van Keer K (2017) Een herziene soortenlijst van de Belgische spinnen (Araneae). Nieuwsbrief van de Belgische Arachnologische Vereniging 32: 39-69
Branco V V, Morano E, Cardoso P (2019) An update to the Iberian spider checklist (Araneae). Zootaxa 4614: 201-254
Christian S (2014) The first record of the tangle-web spider Sardinidion blackwalli (O. P.-Cambridge, 1871) in Luxembourg (Arachnida, Theriidae). Bulletin de la Société des naturalistes luxembourgeois 115: 255-257
Crespo L C, Domènech M, Enguídanos A, Malumbres-Olarte J, Cardoso P, Moya-Laraño J, Frías-López C, Macías-Hernández N, De Mas E, Mazzuca P, Mora E, Opatova V, Planas E, Ribera C, Roca-Cusachs M, Ruiz D, Sousa P, Tonzo V, Arnedo M A (2018) A DNA barcode-assisted annotated checklist of the spider (Arachnida, Araneae) communities associated to white oak woodlands in Spanish National Parks. Biodiversity Data Journal 6(e29443): 1-459
Danışman T, Kunt K B, Özkütük R S, Coşar İ (2024a) The checklist of the spiders of Turkey. Version 2024 [last updated 01 January 2024], online at http://www.spidersofturkey.info
Demircan N, Topçu A (2016) First records for spider fauna of the European part of Turkey (Araneae). Serket 15: 85-91
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
Lavery A (2019) A revised checklist of the spiders of Great Britain and Ireland. Arachnology 18: 196-212
Locket G H, Millidge A F (1953) British spiders. Vol. II. Ray Society, London, 449 pp.
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
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, Stanska M (2008) Check-list of spiders (Araneae) of Poland. 1. December 2008. online at http://www.arachnologia.edu.pl/en/species/8-spiders-of-poland.html
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
Samu F, Szinetár C (1999) Bibliographic check list of the Hungarian spider fauna. Bulletin of the British Arachnological Society 11: 161-184
Seropian A, Bulbulashvili N, Makharadze G, Baznikin A (2024c) New and interesting spiders (Arachnida, Araneae) from Vashlovani National Park and Chachuna Managed Reserve (Georgia). Caucasiana 3: 183-213
Wiehle H (1937) Spinnentiere oder Arachnoidea, VIII. 26: Familie Theridiidae oder Haubennetzspinnen (Kugelspinnen). Die Tierwelt Deutschlands 33: 119-222
WSC (2025) World Spider Catalog. Version 26. Natural History Museum Bern, online at http://wsc.nmbe.ch (28.2.2025) doi: 10.24436/2