Green ring with white code:

AC-letter-letter
letter-number-letter

Sky blue ring with white code:

R-number-number

Dr. Martin Boschert, Bioplan – Institut für angewandte Biologie und Planung GbR, Nelkenstrasse 10, D – 77815 Bühl, Germany

e-mail: Martin Boschert boschert"at"bioplan-buehl.de and Christian Vonderach vonderach"at"bioplan-buehl.de

Notes:

– The sky blue rings are no longer observed in the field.

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