Andrey Semyonov-Tyan-Shansky

Apart from his father, he was influenced by N. A. Severtsov and the entomologist August Feodorovitsh Morawitz (1837–1897).

In 1888 and 1889 he traveled to the Trans-Caspian and Turkestan regions in search of insects, then in 1890 became a curator of entomology at the Imperial Academy of Sciences.

He also took an interest in the poetry of Pushkin, the protection of nature, and a range of other subjects.

He lost his vision at the age of 55 but continued to work, making use of his memory and assistants to help describe species, which he then transcribed.

He died from pneumonia during the siege of Leningrad and his death date is uncertain, noted as 7 March or 8 April according to sources.