George Robert Crotch
Encyclopedia
George Robert Crotch was a British
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 entomologist.

Born in Cambridge, England 1842 Crotch became interested in insect
Insect
Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae...

s, especially Coleoptera, while an undergraduate at Cambridge University
University of Cambridge
The University of Cambridge is a public research university located in Cambridge, United Kingdom. It is the second-oldest university in both the United Kingdom and the English-speaking world , and the seventh-oldest globally...

. He worked at the University Library, Cambridge. He collected insects in Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 and in the Autumn of 1872, he left England on an entomological tour of the world initially arriving at Philadelphia and in the Spring/Summer of 1873 collected insects in California, Oregon, and the Fraser River in British Colimbia. In 1873 he accepted a position as assistant from Louis Agassiz at the Harvard Museum of Comparative Zoology with Hermann August Hagen
Hermann August Hagen
Hermann August Hagen was a German entomologist who specialised in Neuroptera and Odonata. In 1845 he began to collaborate with Edmond de Sélys Longchamps .-Biography:...

. He made collections of Coleoptera in California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 , Vancouver's Island and Oregon
Oregon
Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...

 but soon afterwards he died of tuberculosis
Tuberculosis
Tuberculosis, MTB, or TB is a common, and in many cases lethal, infectious disease caused by various strains of mycobacteria, usually Mycobacterium tuberculosis. Tuberculosis usually attacks the lungs but can also affect other parts of the body...

.

Crotch was the author of a number of books, including Checklist of the Coleoptera of America (1873) and A revision of the Coleopterous family Coccinellidae (1874). His Coleoptera collection from the Azores is in the British Museum, London while the European Coleoptera, Erotylidae and Coccinellidae were left to the Cambridge University Museum of Zoology.

He was an authority on the Coccinellidae (Ladybird beetles) and Erotylidae of the world.

Quote

"I am greatly indebted to Mr G. R. Crotch for having sent me numerous prepared specimens of various beetles belonging to these three families [Crioceridae, Chrysomelidae, Tenebrionidae] and others, as well as for valuable information of all kinds . . . I am also much indebted to Mr. E. W. Janson for information and specimens . . . In Carabidae I have examined Elaphrus uliginosus and Blethisa multipunctata, sent to me by Mr Crotch.Charles Darwin
Charles Darwin
Charles Robert Darwin FRS was an English naturalist. He established that all species of life have descended over time from common ancestry, and proposed the scientific theory that this branching pattern of evolution resulted from a process that he called natural selection.He published his theory...

.

External links

  • BHL A revision of the coleopterous family Coccinellidae. London, E.W. Janson
    Edward Wesley Janson
    Edward Wesley Janson was an English entomologist who specialised in Coleoptera.The Janson family was of Dutch origin and Edward Wesley Janson's father was the London Agent of the Dutch-Rhenish Railway Company....

    ,1874.
  • BHL A revision of the coleopterous family Erotylidae Cambridge University Press,1901.
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