Date of Birth: 07/02/1903
Place of birth: Belopole
Gregory was born on February 7, 1903 in the family of an artisan in the city Belopole (now Sumy region, Ukraine). In 1907-1908, his family moved to Omsk.
In 1929 he was invited to the newly organized in Leningrad All-Union Institute of Plant Protection, first as a researcher and then scientist specialist, head of the Laboratory for the Study of locusts.
In February 1938 he was elected head of the Department of Entomology of the Leningrad Agricultural Institute.
During the Great Patriotic War was a volunteer in the militia.
In March 1942, he, together with the Agricultural Institute in tyazhelomsostoyanii was evacuated from besieged Leningrad to Perm, where he remained until October 1944.
In October 1944 he returned to Leningrad, and went on to head the department of general entomology Leningrad Agricultural Institute in 1968, when he moved to the main work in the Zoological Institute of the USSR Academy of Sciences.
October 23, 1953 he was elected a corresponding member of the Academy of Sciences of the USSR.
"Letter to three hundred" signed in 1955.
December 9, 1965 at a meeting of the All-Union Entomological Society was unanimously elected president of the Society.
Died November 3, 1971 after a short serious illness. He was buried at the cemetery Komarovsky.