For this present recording scheme we basically used two kinds of data sources:
The review of faunistic publications is nearly complete only for Nord Rhine-Westphalia (reviewed by Dr. Martin Kreuels) und Rhineland-Palatinate (reviewed by Annette Lehna and Horst Krummenauer). In 2003 the review of material for Baden-Württemberg was completed (reviewed by D. Nährig, K.-H. Harms, J. Kiechle und J. Spelda).
For the rest of Germany the percentage of reviewed literature is probably below 50%.
We like to take this opportunity to thank all persons who provided data from their collections and databases!