
author
1875–1964
A pioneering spider expert and gifted naturalist, he helped turn arachnology into a modern scientific field while also writing for general readers. His life carried him from Imperial Russia to Yale, where his research and teaching left a lasting mark.

by Alexander Petrunkevitch, Frank Alfred Golder, Samuel N. (Samuel Northrup) Harper, Robert Joseph Kerner
Born in 1875 in the Russian Empire, Alexander Petrunkevitch became one of the leading arachnologists of his era. After studying and teaching in Russia, he left the country amid political pressure, earned a Ph.D. at the University of Freiburg in 1901, and later taught at Harvard and Indiana before joining Yale in 1910.
At Yale, he built an influential career as a zoologist and spider specialist. He described more than 130 spider species between 1910 and 1939 and became especially well known for his work on both living and fossil arachnids. He also wrote beyond strictly technical science, including the essay The Spider and the Wasp, which helped bring his subject to a wider audience.
Petrunkevitch died in 1964 in New Haven, Connecticut. Remembered as a major figure in the study of spiders, he combined careful scholarship, broad curiosity, and a talent for explaining the natural world in a way that still feels lively today.