Johannes D. Mayer:
Pyrrhosoma nymphula 2
Johannes D. Mayer:
Pyrrhosoma nymphula 1
Johannes D. Mayer:
Coenagrion puella male 2
Johannes D. Mayer:
Coenagrion puella male 3
Johannes D. Mayer:
Coenagrion puella male 1
Johannes D. Mayer:
Coenagrion puella
Johannes D. Mayer:
Nehalennia speciosa with blood-sucking Midge Forcipomyia paludis
Johannes D. Mayer:
Aeshna subarctica
Johannes D. Mayer:
Aeshna subarctica
Johannes D. Mayer:
Aeshna isoceles
Johannes D. Mayer:
Onychogomphus forcipatus male
Johannes D. Mayer:
Somatochlora arctica emergence
Johannes D. Mayer:
Cordulegaster boltoni
Johannes D. Mayer:
Gomphus pulchellus
Johannes D. Mayer:
Nesciothemis farinosa
Johannes D. Mayer:
Orthetrum brunneum male
Johannes D. Mayer:
Leucorrhinia pectoralis male
Johannes D. Mayer:
Leucorrhinia albifrons
Johannes D. Mayer:
Libellula quadrimaculata
Johannes D. Mayer:
Leucorrhinia dubia female
Johannes D. Mayer:
Libellula quadrimaculata 2
Johannes D. Mayer:
Sympetrum danae female