Ewald Rubsamen

Ewald Heinrich Rübsaamen (born May 20, 1857 - March 17, 1919) was a German natural scientist.

Following the wishes of his father, the owner of a factory for mining instruments, he began studying mathematics at the Higher Technical School in Karlsruhe in 1875. However, after four semesters he left the university and, with the consent of his parents, devoted himself to his artistic vocation. He returned to his native Siegerland and trained as a drawing teacher at the teacher training college in Hilchenbach . From 1878 onwards he worked at a primary school in Steinhauserberg, but in the spring of 1879 he moved to Siegen as head of a private school. During this time, Rübsaamen began intensively studying botany and zoology as an autodidact. He was particularly interested in plant gall science and research into the gall midge family .

After his father's death in 1891, the entire family moved to Berlin . He initially worked there as a drawing teacher. Without pay, he was employed by Karl August Möbius at the Museum of Natural History and later became his research assistant in the field of entomology. On the occasion of the 1897 International Horticultural Exhibition in Hamburg , where he exhibited more than 100 of his exhibits, he was awarded the Great Golden Medal of Merit by the city of Hamburg. From 1909 onwards, Rübsaamen was head of the state's phylloxera control program in the Rhineland . In 1912 he was awarded the title of professor by the Ministry of Agriculture and in 1917 he became a member of the Leopoldin-Carolin Academy of Sciences in Halle (Saale) .