Daniel William Coquillett

{{Short description|American entomologist (1856–1911)}}

{{Infobox person

| name = Daniel William Coquillett

| image = Daniel Coquillett.jpg

| caption = Coquillett {{circa}} 1896

| birth_date = {{birth date |1856|01|23}}

| birth_place = Pleasant Valley, Illinois, United States

| death_date = {{death date and age |1911|07|07|1856|01|23}}

| death_place = Atlantic City, New Jersey, United States

| resting_place =

| nationality = American

| alma_mater =

| occupation = Entomology

| known_for = Wrote a revision of the dipterous family Therevidae

| spouse =

| children =

}}

Daniel William Coquillett (23 January 1856 – 7 July 1911) was an American entomologist who specialised in flies.Carpenter, M.M. 1945. Bibliography of biographies of entomologists. The American Midland Naturalist 33: 1–116.

He wrote a revision of the dipterous family TherevidaeRevision of the dipterous family Therevidae. Journal of the New York Entomological Society, 2(3): 97–101 (1894) and many other scientific papers in which he described many new species and genera of flies. Coquillett was also the first to attempt fumigation with hydrocyanic acid as a means for controlling citrus scale insects. He experimented in the Wolfskill orange groves where he was supported by the foreman and later quarantine entomologist Alexander Craw in 1888–89.{{cite book|url=https://archive.org/details/CAT30951786025|title=Report on the gas treatment for scale-insects|author=Coquillett, D.W.|page=[https://archive.org/details/CAT30951786025/page/n123 123]| year=1888| publisher=Commissioner of Agriculture, Washington}}