Atlas of the European Arachnids

The Atlas of the European Arachnids is an unsystematic but continuously updated collection of records (occurrences) of arachnid species (excluding mites) in central Europe (while not excluding surrounding regions). This site continues the recording scheme of the Arachnologische Gesellschaft, formerly maintained by Aloysius Staudt (www.spiderling.de).

Recorded species
1,508
Min. recorded specimens
2,422,415
Sources
3,938
Locations
17,784

(These statistics are not updated in real-time for performance reasons. The actual numbers may be different. Last update: 2021-06-21 16:15:12)


Citation: Arachnologische Gesellschaft (2021): Atlas of the European Arachnids, accessed at https://atlas.arages.de on {date of access}


Locations on maps are only displayed with a reduced precision when you are not logged in. Furthermore, the printing functions and advanced statistics are not available. Members of the Arachnologische Gesellschaft can log in at any time and use the Atlas without these restrictions after they have registered for the Members' Area of the main pages. For further information about an AraGes membership see here.



The taxonomy of Araneae on this site follows that of the World Spider Catalog in its latest version, that of the small orders (except Opiliones and Scorpiones) follows the catalogues of Mark S. Harvey. If nothing else is specified for a species from a species group, the species “s. str.” is meant.

All geographic coordinates use the WGS84 datum.

Records from the previous recording scheme are strongly reduced (usually only one record per decade, source, species and map grid). Furthermore, the record date is known only as a decade. For some sources the record date was corrected to be precise to a year. Only the latest records carry an exact date or date range spanning only a few days.

Locations from the former recording scheme were only known as a grid number of the topo-map series TK 25 (an “MTB”), i. e. they are only precise to an area of 10×6 minutes. Only the latest records are more precise. Records from outside of Germany are partially associated with a „pseudo”-MTB, i. e. they lie within a rectangular area with coordinates derived from the TK 25 grid number even though this sheet does not actually exist in the series. New records can be localized to any position in the world, also outside the TK 25 series area. Furthermore, some older records were subsequently localized more precisely.

The following grid systems are supported:

Additional record data like collection method, sex, maturity, biotope type, etc. are typically only known for the newest records.

Biotopes are classfied according to the EUNIS (2007 revision).

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Sources with recent updates

Harms KH: .; in: Muster C (2001): Biogeographie von Spinnentieren der mittleren Nordalpen (Arachnida: Araneae, Opiliones, Pseudoscorpiones) – Verhandlungen des naturwissenschaftlichen Vereins Hamburg 39: 5–196 
Blick T, Muster C (2006, unpublished): Erfassung von Spinnentieren (Arachnida: Araneae, Opiliones, Pseudoscorpiones) an der Festung Rosenberg/Kronach, der Giechburg/Scheßlitz und den Burgen Rabenstein/Kirchahorn und Waischenfeld (Oberfranken, Bayern) im Jahr 2006; in: Praxisorientierte Strategien zur naturverträglichen Sanierung von historischem Mauerwerk aus Sand- und Kalkstein – Bericht an das Naturschutzzentrum Mitwitz: 61 S. 
Schönhofer, A (2021, unpublished): Opiliones from lavender fields, det. for FIBL, France. 

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Recently added sources

Cotti G (1989): Contributo alla connoscenza della fauna geobia del Monte Generoso (Canton Ticino, Svizzera).Bollettino della Società ticinese di scienze naturali 77: 13–34
Schönhofer, A (2021, unpublished): Opiliones from lavender fields, det. for FIBL, France. 
Tretzel E (1954): Reife- und Fortpflanzungszeit bei Spinnen.Zeitschrift für Morphologie und Ökologie der Tiere 42: 634–691; DOI: 10.1007/BF00406636 

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Currently processed sources

De Vore-Scribante A (1999): Les pseudoscorpions de la Suisse: étude systématique, faunistique et biogéographique.These, Faculte des Sciences, Université de Genève & Muséum d'histoire naturelle: 314 S.; DOI: 10.13097/archive-ouverte/unige:79720 
Staudt A, Weber D & Nährig D (2013): Webspinnen (Arachnida, Araneae) aus Höhlen des Großherzogtums Luxemburg.Ferrantia 69: 115–157 

New on this site

2021-06-19:
Version 1.107:
  • Warning when leaving a page with usaved changes.
  • Multiple small improvements.
2021-06-12:
Version 1.106:
  • This version brings a major change with regards to the region names of locations. Until now this region name was free text which was either set automatically using the Geocoder of Google Maps, or it was entered by users or set via the import features. Unfortunately the Geocoder returns results in an undefined order, so that sometimes the german name was set and sometimes the english name (or another language name). Also, users have entered names that were not just the name of the state or comparable region, but were more detailed. They were meaning well, but this defeated the purpose of this data field. This data is used to generate checklists and other statistics on the level of states, cantons, provinces etc. instead of only entire countries. So when the entered region names were different while the same region was meant, these statistics were incorrect. Furthermore, users were presented the region names as entered in e.g. German while they were using the english language version of the Atlas.
    As a solution you can now select the region only from the list of regions as defined by ISO 3166-2. Internally only the ISO region code is stored. When the region is determined automatically by Google or when it's entered via the import features various variants of the region names can be detected and converted to their ISO code. When importing locations the ISO code also can be used directly. For existing locations their region field was converted. When entering the region manually the same selection element is used as is for e.g. the species name.
    The result is uniform region names and correct statistics. Also, region names are displayed according to the language version of the Atlas that is currently used.
    If you find that a region is missing or that a location was converted incorrectly, please send me a short notice.
  • The selection button for bookmarks was integrated into the corresponding selection element for species etc.
  • Vernacular names are now displayed for orders (controlled by user settings like with other vernacular names).
2021-05-26:
Version 1.105:
  • Improved display of a grid field.
  • Direct navigation between adjacent grid fields.
2021-05-23:
Version 1.104:
  • Improved import function.
  • Bugfixes and smaller changes.
2021-04-03:
Version 1.102:
  • When clicking on a country in the country statistics, the country is further refined to provinces (states, cantons, etc.).

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