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 (Marusik pers. comm. 2014)
Global distribution (WSC 2020): North and Central America. Introduced to Azores, Europe, United Arab Emirates, New Caledonia
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
apparently adult all the year round
Figures
Distribution List
Austria   (no references) ||| France   (no references) ||| Georgia   (no references) ||| Italy   (Pantini & Isaia, 2019) ||| Slovenia   (Kuralt & Kostanjšek, 2019) ||| Spain   (Branco et al., 2019) ||| Switzerland   (no references) |||
References

Bellvert A, Domènech M, Cabrera-Cánoves P, Pujade-Villar J (2018) First record of Erigone autumnalis Emerton, 1882 (Araneae: Linyphiidae: Erigoninae) for the Iberian Peninsula. Revista Ibérica de Aracnología 33: 73-74 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

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. Mitteilungen der Schweizerischen Entomologischen Gesellschaft 66: 303-316 pdf

Kuralt Ž, Kostanjšek R (2019) A contribution to the Slovenian spider fauna – IV. Natura Sloveniae 21: 21-45 pdf

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 (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

Pesarini C (1996) Note su alcuni Erigonidae italiani, con descrizione di una nuova specie (Araneae). Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 135: 413-429 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
15-10-2019 Image insert
15-10-2019 Distribution update Detail
09-01-2019 Image insert
09-01-2019 Distribution update Detail
18-09-2018 Distribution update Detail
02-10-2017 Image insert
27-08-2017 Distribution update Detail