Linyphiidae  Blackwall, 1859 / Erigone  Audouin, 1826   30 species

Erigone autumnalis  Emerton, 1882

Description

Male palp with projecting patellar apophysis. Epigyne only posteriorly with transverse folds. Prosoma with high contrast black eye field. Sternum slightly blackish. Opisthosoma slightly blackish.

Body length male: 1.18-1.5 mm
Body length female: 1.4-1.7 mm
Additional information

Probably North- and Central American species originally, widely dispersed by wind drift (Antarctic (?), Azores). In Switzerland only in Tessin.

This species of North American origin is not native to Europe (alien species). It had been introduced to Europe at least once and did establish.

Character states from linyphiid key
Distribution
  Presence
  No data
Distribution comment: Georgia (pers.comm. Y. Marusik 2014)
Global distribution (WSC 2018): North and Central America. Introduced to Azores, Europe, United Arab Emirates, New Caledonia
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
apparently adult all the year round
Figures
References

Déjean S, Danflous S (2017) Erigone autumnalis Emerton 1882 (Araneae, Linyphiidae), nouvelle espèce pour la faune de France. Revue Arachnologique 2 4: 14-17 pdf

Hänggi A (1993) Beiträge zur Kenntnis der Spinnenfauna des Kantons Tessin IV - Weitere faunistisch bemerkenswerte Spinnenfunde der Tessiner Montanstufe. Mitt Schweiz Entomol Ges 66: 303-316

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

Milasowszky N, Hepner M, Komposch C, Zulka K P (2016) Erstnachweise von Drassyllus vinealis (KulczyńsKi, 1897) und Erigone autumnalis Emerton, 1882 (Arachnida: Araneae: Gnaphosidae, Linyphiidae) in Österreich. Beiträge zur Entomofaunistik 17: 163-167 pdf

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

Pesarini C (1996) Note su alcuni Erigonidae italiani, con descrizione di una nuova specie (Araneae). Atti Soc it Sci nat Museo civ Stor nat Milano 135: 413-429

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
18-09-2018 Distribution update Old value
02-10-2017 Image insert
27-08-2017 Distribution update Old value