Linyphiidae  Blackwall, 1859 / Micrargus  Dahl, 1886   10 species

Micrargus apertus  (O. Pickard-Cambridge, 1871)

Description

Male palp with pointed tooth on base of embolus, large surrounding membranous border. Prosoma dark brown. Opisthosoma grey to dark grey.

Body length male: 1.6-1.9 mm
Body length female: 1.7-2.2 mm
Additional information

biology unknown, because often confused with M. herbigradus

Character states from linyphiid key
Distribution
  Presence
  No data
Global distribution (WSC 2020): Europe, Japan
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
Distribution List
Austria   (no references) ||| Belgium   (no references) ||| Bulgaria   (Blagoev et al., 2018) ||| Czechia   (no references) ||| Denmark   (no references) ||| Estonia   (no references) ||| Finland   (Koponen et al., 2016) ||| France   (no references) ||| Germany   (no references) ||| Italy   (Pantini & Isaia, 2019) ||| Latvia   (Cera, 2018) ||| Lithuania   (no references) ||| Luxembourg   (Kreuels et al., 2019) ||| Montenegro   (no references) ||| Norway   (no references) ||| Poland   (no references) ||| Romania   (no references) ||| Russia, Northern   (no references) ||| Serbia   (no references) ||| Slovakia   (no references) ||| Spain   (Branco et al., 2019) ||| Sweden   (no references) ||| Switzerland   (no references) ||| United Kingdom   (no references) |||
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) pdf

Branco V V, Morano E, Cardoso P (2019) An update to the Iberian spider checklist (Araneae).
[N.B.: few records from this paper are not taken over and not commented] Zootaxa 4614: 201-254 pdf

Cera I (2018) The checklist of Latvian spiders (Arachnida: Araneae). Environmental and Experimental Biology 16: 139-152 pdf

Helsdingen P J van (2010a) Araneae. In: Fauna Europaea Database (Version 2010.1), online at www.european-arachnology.org

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 pdf

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 pdf

Løvbrekke H (unpubl.)

Millidge A F (1976) Re-examination of the erigonine spiders "Micrargus herbigradus" and "Pocadicnemus pumila" (Araneae, Linyphiidae). Bulletin of the British Arachnological Society 3: 145-155 pdf

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). http://araneae.it. Fragmenta Entomologica 51: 127-152 pdf

Relys V, Weiss I (1997) Micrargus alpinus sp. n., eine weitere Art der M. herbigradus-Gruppe aus Österreich (Arachnida: Araneae: Linyphiidae). Revue Suisse de Zoologie 104: 491-501 pdf

Roberts M J (1987) The spiders of Great Britain and Ireland. Volume 2: Linyphiidae and checklist. Harley Books Colchester, England, 204 pp. pdf

Staudt A, Weber D, Nährig D (2013) Webspinnen (Arachnida,  Araneae) aus Höhlen des Großherzogtums Luxemburg. Ferrantia 69: 115-157 pdf

Wiśniewski K, Rozwałka R, Wesołowska W (2018) Distribution, habitat affinities and phenology of the Micrargus herbigradus-species group (Araneae: Linyphiidae) in Poland. Biológia (Bratislava) 73: 151-164 pdf

World Spider Catalog (2020) World Spider Catalog. Version 21.0. Natural History Museum Bern, online at http://wsc.nmbe.ch (20.03.2020) doi: 10.24436/2 pdf

Updates
05-04-2018 Image insert
22-08-2014 Image insert
28-04-2013 Distribution update Detail