Andrey Semyonov-Tyan-Shansky

Andrey Petrovich Semyonov-Tyan-Shansky (9 June 1866 – 8 April 1942) was a Russian entomologist specializing in beetles. He was the son of Pyotr Semyonov-Tyan-Shansky. He was among the first entomologists to consider the protection of insects and the risk of their extinction.

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 Zoological Museum of the Imperial Academy of Sciences. He worked at the museum only until 1896 and then worked at his home. He studied mainly the Hymenoptera and Dermaptera.