Xysticus acerbus Thorell, 1872
Description
Ventral tibial apophysis small, tip of lateral apophysis directing ventrally. Embolus broad, membranous tapering to a sclerotised spur. Epigyne with oval groove, all sides distinctly bordered. Vulva consists of 2 independent, longish oval, sac-like, compact structures. Prosoma hazelnut brown, dorsally with vague V-pattern. Eye region whitish. Sternum light brown to dark yellow-brown, longish oval. Chelicerae dark brown, with fine spines. Legs brown to dark brown with dark dorsal stripes. Opisthosoma female: dorsally ochre with slender, white transverse stripes and median longitudinal band (very variable). Male: grey to sand grey, ventrally sand brown or brown to dark brown.
Body length male: 4.0-6.0 mmBody length female: 6.0-10.0 mm
Additional information
in sunny meadows, dry meadows and heathland
Frequency: expanding
Distribution
Phenology
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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Figures
Pedipalp, ventral view
(Roberts 1995)
Pedipalp, ventral view
(van Helsdingen 1986a)
Pedipalp, ventral view
(Jantscher 2001a)
Pedipalp, ventral view
(Jantscher 2001a)
Pedipalp, ventral view
(Locket & Millidge 1953)
Pedipalp, retrolateral view
(Heimer & Nentwig 1991)
Pedipalp, retrolateral view
(Jantscher 2001a)
Pedipalp, retrolateral view
(Jantscher 2001a)
Pedipalp, retrolateral view
(Zamani et al. 2024b)
Pedipalp, ventral view
(Zamani et al. 2024b)
Palpal tibia
(Locket & Millidge 1953)
Tibial apophysis
(van Helsdingen 1986a)
Epigyne
(Roberts 1995)
Epigyne
(Jantscher 2001a)
Epigyne
(Jantscher 2001a)
Epigyne
(Locket et al. 1974)
Vulva
(Heimer & Nentwig 1991)
Vulva
(van Helsdingen 1986a)
Vulva, dorsal view
(Jantscher 2001a)
Vulva, dorsal view
(Jantscher 2001a)
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
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) 
Blick T (2018) A small collection of spiders (Arachnida: Araneae) from the River Vjosa, Albania – with an updated spider checklist of Albania. Acta ZooBot Austria 155: 213-232
Bosmans R, Van Keer J, Russell-Smith A, Kronestedt T, Alderweireldt M, Bosselaers J, De Koninck H (2013) Spiders of Crete (Araneae). A catalogue of all currently known species from the Greek island of Crete. Nieuwsbrief van de Belgische Arachnologische Vereniging 28 (Suppl. 1): 1-147
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
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, Coşar İ (2024a) The checklist of the spiders of Turkey. Version 2024 [last updated 01 January 2024], online at http://www.spidersofturkey.info
Deltshev C, Vrenozi B, Blagoev G, Lazarov S (2011b) Spiders of Albania – faunistic and zoogeographical review (Arachnida: Araneae). Acta Zoologica Bulgarica 63: 125-144
Geci D, Naumova M (2021b) A preliminary checklist of the spiders of Kosovo (Arachnida: Araneae). Ecologia Balkanica, Special Edition 4: 11-28
Gregorič M, Kuntner M (2009) Epigean spider diversity in the classical karst. Hacquetia 8: 67-78
Heimer S, Nentwig W (1991) Spinnen Mitteleuropas. Paul Parey Berlin
Helsdingen P J van (1986a) The Porrhomma microphthalmum species-group. Bulletin of the British Arachnological Society 7: 11-16
Ivanov V V (2013) The checklist of Belarusian spiders (Arachnida, Araneae). Zoology and Ecology 4: 293-311
Jantscher E (2001a) Revision der Krabbenspinnengattung Xysticus C.L. Koch, 1835 (Araneae, Thomisidae) in Zentraleuropa. Dissertation, Univ. Graz, 328 pp., 81 pls.
Komnenov M (2014) Spider fauna of the Osogovo Mt. Range, Northeastern Macedonia. Fauna Balkana 2: 1-267
Koponen S, Fritzén N R, Pajunen T (2016) Checklist of spiders in Finland (Araneae). 6th version, December 2016, online at http://biolcoll.utu.fi/arach/checklist_of_spiders_in_Finland.htm
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
Le Peru B (2007) Catalogue et répartition des araignées de France. Revue Arachnologique 16: 1-468
Locket G H, Millidge A F (1953) British spiders. Vol. II. Ray Society, London, 449 pp.
Locket G H, Millidge A F, Merrett P (1974) British Spiders, Volume III. Ray Society, London, 315 pp.
Mikhailov K G, Propistsova E A (2017) On the spiders (Arachnida: Aranei) from Armenia. Arthropoda Selecta 26: 369-371
Milosevic B (2002) Aranea – Popis vrsta – Checklist. Hrvatsko entomološko društvo – Inventar entomofaune Hrvatske [Aranea – List of species – Checklist. Croatian Entomological Society – Inventory of Croatian entomofauna].
Naumova M, Lazarov S, Deltshev C (2019a) Faunistic diversity of the spiders in Montenegro (Arachnida: Araneae). Ecologica Montenegrina 22: 50-89
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
Polchaninova N, Prokopenko E (2019) An updated checklist of spiders (Arachnida: Araneae) of Left-Bank Ukraine. Arachnologische Mitteilungen 57: 60-64 & App
Ponomarev A V (2022) Spiders (Arachnida: Araneae) of the southeast of the Russian Plain: catalogue, the fauna specific features. SSC RAS Publishers, Rostov-on-Don, 640 pp.
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
Vasiliev A I, Mikhailov K G (2023) Annotated checklist of spiders (Araneae) of the Republic of Moldova. Invertebrate Zoology 20: 307-342
WSC (2024) World Spider Catalog. Version 25.5. Natural History Museum Bern, online at http://wsc.nmbe.ch (31.10.2024) doi: 10.24436/2
Zamani A, Khudhur F A, Marusik Y M (2024b) New data on spiders (Arachnida: Araneae) of Iraqi Kurdistan, with new species and records. Zootaxa 5492: 260-278
Updates
| 05-08-2024 | Image insert | |
| 30-05-2023 | Distribution update | Detail |
| 15-01-2023 | Distribution update | Detail |
| 20-06-2021 | Distribution insert | Detail |
| 26-01-2021 | Distribution update | Detail |
| 28-11-2019 | Distribution update | Detail |
| 14-12-2017 | Distribution update | Detail |
| 01-12-2013 | Distribution update | Detail |
| 15-10-2013 | Distribution update | Detail |
| 15-04-2013 | Distribution update | Detail |