Improphantes decolor (Westring, 1861)
Description
Palp male: patella with short terminal spine. Prosoma yellow-brown. Legs yellow-brown. Opisthosoma grey with dark transverse stripe.
Body length male: 2.4-2.5 mmBody length female: 2.4-3.5 mm
Distribution
Phenology
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
 |  |
Figures
Pedipalp
(Heimer & Nentwig 1991)
Pedipalp, retrolateral view
(Thaler 1986c)
Pedipalp, retrolateral view
(Thaler 1986c)
Tip of bulbus
(Løvbrekke unpubl.)
Lamella characteristica
(Løvbrekke unpubl.)
Paracymbium
(Thaler 1986c)
Paracymbium
(Løvbrekke unpubl.)
Epigyne
(Heimer & Nentwig 1991)
Epigyne
(Thaler 1986c)
Epigyne
(Thaler 1986c)
Epigyne/vulva, aboral view
(Thaler 1986c)
Epigyne/vulva, aboral view
(Thaler 1986c)
Epigyne, ventral view
(Løvbrekke unpubl.)
Epigyne, dorsal view
(Løvbrekke unpubl.)
Epigyne, dorsal view
(Bosmans 1985a)
Epigyne, lateral view
(Bosmans 1985a)
Epigyne, ventral view
(Bosmans 1985a)
Epigyne, lateral view
(Løvbrekke unpubl.)
Epigyne, ventral view
(Løvbrekke unpubl.)
Vulva, dorsal view
(Løvbrekke unpubl.)
Opisthosoma, dorsal view
(Løvbrekke unpubl.)
Opisthosoma, lateral view
(Løvbrekke unpubl.)
Opisthosoma, dorsal view
(Palmgren 1975)
Distribution List
References
Aakra K, Hauge E (2003) Checklist of Norwegian spiders (Arachnida: Araneae), including Svalbard and Jan Mayen. Norwegian Journal of Entomology 50: 109-129 
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)
Blick T, Finch O-D, Harms K H, Kiechle J, Kielhorn K-H , Kreuels M, Malten A, Martin D, Muster C, Nährig D, Platen R, Rödel I, Scheidler M, Staudt A, Stumpf H, Tolke D (2016) Rote Liste und Gesamtartenliste der Spinnen (Arachnida: Araneae) Deutschlands. 3. Fassung, Stand April 2008, einzelne Änderungen und Nachträge bis August 2015. Naturschutz und Biologische Vielfalt 70/4: 383-510
Bosmans R (1985a) Les genres Troglohyphantes Joseph et Lepthyphantes Menge en Afrique du Nord (Araneae, Linyphiidae): Etudes sur les Linyphiidae nord-africaines, III. Revue Arachnologique 6: 135-178
Bosmans R (2006b) Contribution to the knowledge of the Linyphiidae of the Maghreb. Part X. New data on Lepthyphantes Menge (sensu lato) species (Araneae: Linyphiidae). Belgian Journal of Zoology 136: 173-191
Branco V V, Morano E, Cardoso P (2019) An update to the Iberian spider checklist (Araneae). Zootaxa 4614: 201-254
Deltshev C, Komnenov M, Blagoev G, Georgiev T, Lazarov S, Stojkoska E, Naumova M (2013) Faunistic diversity of spiders (Araneae) in Galichitsa Mountain (FYR Macedonia). Biodiversity Data Journal 1(e977): 1-70
Heimer S, Nentwig W (1991) Spinnen Mitteleuropas. Paul Parey Berlin
Isaia M, Tolve M, Pantini P (2025) Araneae.it: 2.0: the new updated version of the digital catalog of the Italian spiders and other arachnids (Arachnida: Araneae, Opiliones, Scorpiones, Pseudoscorpiones, Palpigradi, Solifugae). Fragmenta Entomologica 57: 197-204
Ivanov V V (2013) The checklist of Belarusian spiders (Arachnida, Araneae). Zoology and Ecology 4: 293-311
Komnenov M (2017) New data on spider fauna (Araneae) of Shar Mountain, north-western Macedonia. Proceedings of the 5th Congress of the Ecologists of Macedonia, with international participation (Ohrid, 19th-22nd October 2016). Special issues of the Macedonian Ecological Society 13: 44-61
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
Kronestedt T (2001) Checklist of Spiders (Araneae) in Sweden [Preliminary version February 2001]
Le Peru B (2007) Catalogue et répartition des araignées de France. Revue Arachnologique 16: 1-468
Løvbrekke H (unpubl.)
Palmgren P (1975) Die Spinnenfauna Finnlands und Ostfennoskandiens VI. Linyphiidae 1 (Die Linyphiinae und Linyphiinae-ähnlichen Micryphantinae). Fauna Fennica 28: 1-102
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
Scharff N, Gudik-Sørensen O (2006) Katalog over Danmarks edderkopper (Araneae). Catalogue of the spiders of Denmark (Araneae). Entomologiske Meddelelser 74: 3-71
Thaler K (1986c) Vier bemerkenswerte Leptyphantes-Arten aus dem Mittelmeergebiet und aus Vorderasien (Arachnida: Aranei, Linyphiidae). Sitzungsberichte der Österreichischen Akademie der Wissenschaften (I) 194: 311-325
Vilbaste A (1987) Eesti Ämblikud (Aranei). Annoteeritud nimestik. Estonian spiders (Aranei). An annotated check list. Valgus, Tallinn. 113 pp. & 512 maps on 67 unpag. pages
Weiss I, Petrișor A (1999) List of the spiders (Arachnida: Araneae) from Romania. Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa” 41: 79-107
WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (13.2.2026) doi: 10.24436/2