Araeoncus crassiceps (Westring, 1861)
Description
Male
Tibial apophysis distally indented. Prosoma yellow-brown to dark brown, with cephalic lobe. Legs yellow-brown, femur and tibia distally blackened. Opisthosoma grey-black.
Body length male: 1.4-2.0 mmFemale
Vulva very membranous section of receptaculum seminis.
Body length female: 1.5-2.0 mmDistribution
Phenology
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
 |  |
Figures
Pedipalp
(Wiehle 1960a)
Pedipalp
(Locket & Millidge 1953)
Pedipalp
(Roberts 1987)
Pedipalp, retrolateral view
(Løvbrekke unpubl.)
Palpal tibia, dorsal view
(Løvbrekke unpubl.)
Tibial apophysis
(Wiehle 1960a)
Tibial apophysis
(Roberts 1987)
Tibial apophysis
(Locket & Millidge 1953)
Prosoma, lateral view
(Wiehle 1960a)
Prosoma, lateral view
(Roberts 1987)
Prosoma, lateral view
(Locket & Millidge 1953)
Tibia I
(Løvbrekke unpubl.)
Epigyne
(Wiehle 1960a)
Epigyne
(Roberts 1987)
Epigyne
(Locket & Millidge 1953)
Epigyne, ventral view
(Løvbrekke unpubl.)
Epigyne, ventral view
(Løvbrekke unpubl.)
Vulva
(Wiehle 1960a)
Vulva, dorsal view
(Løvbrekke unpubl.)
Vulva, dorsal view
(Fjellberg unpubl.)
Vulva, ventral view
(Fjellberg unpubl.)
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
Aakra K, Hauge E (2003) Checklist of Norwegian spiders (Arachnida: Araneae), including Svalbard and Jan Mayen. Norwegian Journal of Entomology 50: 109-129 
Arnold K (2001) Beitrag zur Spinnenfauna (Arachnida, Araneae) des Fürstentums Liechtenstein. Berichte der Botanisch-Zoologischen Gesellschaft Liechtenstein-Sargans-Werdenberg 28: 211-244
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 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
Cera I, Keiss O (2016) Spider species new to the fauna of Latvia and new localities for Gnaphosa lapponum and G. nigerrima (Araneae: Gnaphosidae). Latvijas Entomologs 53: 122-124
Fjellberg A (unpubl.)
Ivanov V V (2013) The checklist of Belarusian spiders (Arachnida, Araneae). Zoology and Ecology 4: 293-311
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
Kronestedt T (2001) Checklist of Spiders (Araneae) in Sweden [Preliminary version February 2001]
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.
Løvbrekke H (unpubl.)
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 (1987) The spiders of Great Britain and Ireland. Volume 2: Linyphiidae and checklist. Harley Books Colchester, England, 204 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
Wiehle H (1960a) Spinnentiere oder Arachnoidea (Araneae). XI. Micryphantidae-Zwergspinnen. Die Tierwelt Deutschlands 47: 1-620
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