Linyphiidae  Blackwall, 1859 / Micrargus  Dahl, 1886   10 species

Micrargus apertus  (O. P.-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 2018): Europe, Japan
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
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)

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

Løvbrekke H (unpubl.)

Millidge A F (1975b) Re-examination of the erigonine spiders "Micrargus herbigradus" and "Pocadicnemus pumila" (Araneae, Linyphiidae). Bull Br Arachnol Soc 3: 145-155

Pantini P, Isaia M (2017) Checklist of the Italian spiders (version May 2017). online at http://www.museoscienzebergamo.it/web/index.php?option=com_content&view=category&layout=blog&id=96&Itemid=94 pdf

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

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

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

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

World Spider Catalog (2018) World Spider Catalog, version 19.5. Natural History Museum Bern, online at http://wsc.nmbe.ch (15.07.2018) doi: 10.24436/2

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