The database of Odonata of the Krüger Collection includes information about specimens which are housed in the Museum and Institute of Zoology Polish Academy of Sciences, Warszawa. Leopold Krüger (1861-1938) was curator of entomology at the Museum of Natural History in Stettin (now Szczecin, Poland). The Odonata Collection comprising about 4303 specimens of Neotropical, Ethiopian and Oriental Fauna. The exotic part of the L. Krüger Collection chiefly consists of a large lot of specimens provided by H. Dohrn from 1893 to 1897, originating from a small region in inland northeastern Sumatra (Indonesia).