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Linyphiidae  Blackwall, 1859 / Leptorhoptrum  Kulczynski, 1894   1 species

Leptorhoptrum robustum  (Westring, 1851)

WSC LSID urn:lsid:nmbe.ch:spidersp:011340

Key to genera | Key to species

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 2019): North America, Europe, Russia (European to Far East), Japan
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
mainly in summer
Figures
species

male Pedipalp
(Roberts 1987)

species

male Pedipalp
(Wiehle 1956)

species

male Pedipalp
(Locket & Millidge 1953)

species

male Pedipalp, retrolateral view
(Løvbrekke unpubl.)

species

female Epigyne
(Wiehle 1956)

species

female Epigyne
(Roberts 1987)

species

female Epigyne
(Locket & Millidge 1953)

species

female Epigyne, ventral view
(Løvbrekke unpubl.)

species

female Vulva
(Wiehle 1956)

species

female Vulva, dorsal view
(Løvbrekke unpubl.)

species

female Femur I, dorsal view
(Løvbrekke unpubl.)

species

female Tibia I, dorsal view
(Løvbrekke unpubl.)

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 (2018) Checklist of the Italian spiders (version June 2018). online at http://www.museoscienzebergamo.it/web/index.php?option=com_content&view=category&layout=blog&id=96&Itemid=94 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 20.0. Natural History Museum Bern, online at http://wsc.nmbe.ch (20.01.2019) doi: 10.24436/2

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