Over decades, the internist and paediatrician from Cologne, Dr. Melchior Pass, has collected and constantly expanded this remarkable collection of butterflies and moths, that counts about 200 drawers.
The Zygaenidae family (Lepidoptera; German: blood droplets or burnet) was the speciality of Prof. Dr. Clas M. Naumann, the longtime director of the ZFMK ( 1989-2004 ).
The Lepidoptera collection of the Zoologisches Forschungsmuseum Alexander Koenig (ZFMK) is one of the largest collections of this insect order in Germany, containing about 2 million specimens.