1. Biologist, PhD in Zoology: speciation in greek bushcrickets of the Poecilimon propinquus-group
2. Author of peer-reviewed articles about evolutionary biology: mate choice, nuptial gifts in bushcrickets, especially of the genus Poecilimon (Orthoptera: Tettigonioidea: Phaneropteridae)
compare www.guclehmann.de for articles in cooperation with my wife Professor Dr. Gerlind UC Lehmann
Additionally author of a determination key about german Orthoptera. Moreover, my determination key for northern and middle European Odonata is one of the most selled determination booklets in Europe, translated into Frensh and Dutch:
Lehmann AW, Nüss J-H 1998 Libellen 5Ed. Deutscher Jugendbund für Naturbeobachtung. 130 pp. see www.naturbeobachtung.de
3. DZG (Deutsche Zoologische Gesellschaft), GdO (Gesellschaft deutschsprachiger Orthopterologen, Member of the scientifc board), DGfO (Deutsche Gesellschaft für Odonotologie)
