Linyphiidae  Blackwall, 1859 / Leptorhoptrum  Kulczynski, 1894   1 species

Leptorhoptrum robustum  (Westring, 1851)

Description

Cymbium shorter than palpal tibia. Embolus strongly sclerotised. Paracymbium very simple. Epigyne with broad epigynal plate, posterior margin ± straight. Receptacula seminis small and spheroidal, visible through epigyne. Prosoma brown, with dark margin and radial stripes. Sternum brown, tinged with black. Chelicerae brown, robust. Legs yellow-brown, ± short, robust. Opisthosoma grey to almost black.

Body length male: 3-4.2 mm
Body length female: 3-4.8 mm
Additional information

In moss and leaves of damp, cool localities from lowland up to alpine zone.

It has been described that this small species repeatedly bite sewage plant workers (Duffey & Green 1975). It is highly unlikely that a 3 mm linyphiid can bite humans, but other effects such as allergic reactions cannot be excluded. 

Character states from linyphiid key
Distribution
  Presence
  No data
Global distribution (WSC 2020): North America, Europe, Russia (Europe to Far East), Japan, Iran?
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Maximum VI-IX
Figures
Distribution List
Austria   ( no references ) ||| Belgium   ( no references ) ||| Bulgaria   ( no references ) ||| Czechia   ( no references ) ||| Denmark   ( no references ) ||| Faroe Islands   ( no references ) ||| Finland   ( no references ) ||| France   ( no references ) ||| Germany   ( no references ) ||| Iceland   ( no references ) ||| Ireland   ( no references ) ||| Italy   ( no references ) ||| Latvia   ( no references ) ||| Liechtenstein   ( no references ) ||| Netherlands   ( no references ) ||| Northern Ireland   ( no references ) ||| Norway   ( no references ) ||| Poland   ( no references ) ||| Romania   ( no references ) ||| Russia, Central   ( no references ) ||| Russia, Eastern   ( no references ) ||| Russia, Northern   ( no references ) ||| Russia, Western   ( no references ) ||| Slovakia   ( no references ) ||| Sweden   ( no references ) ||| Switzerland   ( no references ) ||| Ukraine   ( 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)

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

Duffey E, Green M B (1975) A linyphiid spider biting workers on a sewage-treatment plant. Bull Br Arachnol Soc 3: 130–131

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

Lissner J, Jensen J-K, Hansen L J, Simonsen W, Kelduni R, Nissen K (2016b) An updated checklist of spiders (Araneae) of the Faroe Islands. Norwegian Journal of Entomology 63: 197-240 pdf

Locket G H, Millidge A F (1953) British Spiders 2. Ray Soc London

Løvbrekke H (unpubl.)

Nentwig W, Gnädinger M, Fuchs J, Ceschi A (2013) A two year study of verified spider bites in Switzerland and a review of the European spider bite literature. Toxicon 73: 104-110

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

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

Wiehle H (1956) Spinnentiere oder Arachnoidea, X. 28: Familie Linyphiidae-Baldachinspinnen. Tierwelt Deutschlands 44: 1-337

World Spider Catalog (2019) World Spider Catalog, version 20.5. Natural History Museum Bern, online at http://wsc.nmbe.ch (20.09.2019) doi: 10.24436/2

Updates
25-02-2014 Image insert
26-01-2014 Image insert
26-11-2013 Datasheet update Detail