Oskar Augustus Johannsen

Oskar Augustus Johannsen's AcademicInfluence.com Rankings

Biology

#18540

Historical Rank

Entomology

#445

Historical Rank

biology Degrees

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Biology

Oskar Augustus Johannsen's Degrees

PhD Entomology University of Copenhagen

Why Is Oskar Augustus Johannsen Influential?

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According to Wikipedia, Oskar Augustus Johannsen , was an American entomologist who specialised in Diptera. Johannsen earned degrees from the University of Illinois and Cornell University. He taught civil engineering at Cornell from 1899 to 1909, entomology at the University of Maine from 1909 to 1912, and entomology at Cornell from 1912 to 1938.

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Oskar Augustus Johannsen's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Embryology of insects and myriapods (1941) (118)
Aquatic Nematocerous Diptera (59)
Eye structure in normal and eye‐mutant Drosophilas (1924) (46)
The fungus gnats of North America, part III / (39)
Some phases in the embryonic development of Diacrisia virginica fabr. (Lepidoptera) (1929) (32)
Aquatic Diptera. Part II. Orthorrhapha-Brachycera and Cyclorrhapha. (1935) (31)
A Generic Synopsis Ojf the Ceratopogonidae (Heleidae) of the Americas, a Bibliography, and a List of the North American Species (1943) (29)
Stratiomyiid Larvæ and Puparia of the North Eastern States (22)
May flies and midges of New York. (16)
Aquatic Diptera. Part I. Nemoeera, exclusive of Chironomidae and Ceratopogonidae. (1934) (13)
The Mycetophilidae of North America. Part III (11)
New Species of North American Ceratopogonidæ and Chironomidæ (1934) (8)
The Life History of Thrypticus Muhlenbergiae Sp. NOV. (Diptera) (7)
North American Henicocephalidae (6)
Eighth International Congress (1947) (5)
Notes on North American Species of Pterobosca (1951) (5)
Two New Species of American Ceratopogonidae (Diptera) (1943) (5)
Medical Entomology. A Survey of Insects and Allied Forms which Affect the Health of Man and Animals. (1933) (5)
Orthorrhapha-Brachycera and Cyclorrhapha (1935) (4)
A new midge injurious to pineapples (Diptera: Ceratopogonidae) (4)
New Eastern Anthomyiidae (Diptera) (3)
Guide to the insects of Connecticut. (3)
Insect notes for 1909 (3)
Wohlfahrtia vigil a Parasite upon Rabbits. (3)
A new species of Hydrobaenus lChaetocladiusr from Connecticut with notes on related forms lDipterac Chironomidaer (1947) (3)
Notes on the Synonymy of Some New York State Chironomidae (2)
North American Dixid (2)
A NEW SPECIES OF SCIARA FROM CANADA (DIPTERA) (1929) (1)
Handbook of medical entomology [by] Wm. A. Riley ... and O. A. Johannsen. (1)
The genus Diamesa Meigen (Diptera, Chironomidae) (1)
Notes on some Adirondack Diptera collected by Messrs. MacGillivary and Houghton (1)
THE GENUS TRICHOTANYPUS KIEFFER (CHIRONOMIDAE, DIPT) (1926) (1)
The First Instar of Wohlfahrtia vigil Walker. (1921) (1)
A NEW CHLOROPID SUBGENUS AND SPECIES FROM NEW YORK (1924) (1)
A Monograph on Chironomids (1954) (1)
A New Species of Dixa From California (1)
A New Pterobosca from Florida with a Key to American Species (1950) (1)
Two New Species of Cecidomyiidae from Florida (1945) (1)
A new sciarid from the eastern United States (Dipt.: Mycetophilidae) (1)
The Female of Lestodiplosis Floridana Johannsen (1947) (0)
INTERNATIONAL CONGRESS OF ENTOMOLOGY (1947) (0)
A Method for the Extermination of the Roundheaded Apple-Tree Borer (1924) (0)
Some new insects of Kansas Chironomidae. (Appendix to : Tucker.) (1907) (0)
Apple tree insects of Maine. (0)
External Insect Anatomy. A Guide to the Study of Insect Anatomy and an Introduction to Systematic Entomology (1924) (0)
Recent Entomological Literature (0)
A Tertiary fungus gnat (1912) (0)
A New Species of Blepharocera from Massachusetts (Diptera) (0)
A Noxious Species of Phlebotomus in the Okefenokee Swamp, Georgia (1943) (0)
Adult and immature stages of Cricotopus elegans np spp lChironomidaec Dipterar (1943) (0)
A comparative analysis of European hotel plans (0)
Eighth International Congress of Entomology (1947) (0)

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Oskar Augustus Johannsen's Academic­Influence.com Rankings