Dudley Moulton (28 December 1878 – 5 July 1951) was an American entomologist who specialized in the study of thrips while working as an entomologist on quarantine duty and later in administration of the department of agriculture in California.
Moulton was born in farming family in San Jose.
(1906) from Stanford University, studying under Vernon Kellogg.
He took an early interest in the pear thrip in 1904 at a time when it was a serious pest and later maintained an interest in thrips outside of his main professional work and asked his colleagues to collect for him.
His thrip collections, which were finally placed in the California Academy of Sciences included 25,000 slides and about 10,000 specimens in alcohol.