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Articles 15631 - 15660 of 16202
Full-Text Articles in Life Sciences
Neue Beiträge Zur Lebensweise Der Trigonaloiden., H. Bischoff
Neue Beiträge Zur Lebensweise Der Trigonaloiden., H. Bischoff
Ba
No abstract provided.
On Some Diplopteryga From The Southwest Of North America, Peter Cameron
On Some Diplopteryga From The Southwest Of North America, Peter Cameron
Bu
No abstract provided.
Zwei Turkestanische Prosopis-Arten (Hymenoptera, Prosophidae), J. D. Alfken
Zwei Turkestanische Prosopis-Arten (Hymenoptera, Prosophidae), J. D. Alfken
A
Kopf nach unten wenig verschmalert, wie bei P. variegata F. gestaltet und skulpturiert, aber Scheitel und Schlafen viel glanzender und sparsamer punktiert. Wangenfurchen die Hohe des oberen Augenrandes erreichend und eln wenig gegen die ausseren Nebenaugen gebogen. Spitze der Oberkiefer und Vorderrand des Clypeus rotbraun. Wangcn mit grossem dreieckigem Flecken, Clypeus mit schmalem Liingsflecken in der Mitte und Stirnschildchen mit kleinem Querflecken von gelber Farbe. Fuhlergeissel unten rotbraun, oben schwarzbraun. Mesonotum nicht, wie bei P. variegata, matt und dicht anliegend kurzhaarig.
Practical Information On The Scolytid Beetles On North American Forests I. Barkbeetles Of The Genus Dendroctonus, Andrew Delmar Hopkins
Practical Information On The Scolytid Beetles On North American Forests I. Barkbeetles Of The Genus Dendroctonus, Andrew Delmar Hopkins
The Bark Beetles, Fuels, and Fire Bibliography
During the writer's investigations of extensive insect depredations in the forests of West Virginia, from 1890 to 1902, he was forcibly impressed with the importance of the forest-insect problem in connection with any future efforts toward the successful management of the forests of this country, and was thus led to give special attention to the subject. It was soon realized that among the principal groups of insect enemies of forest trees the scolytid bark and wood boring beetles must occupy first rank, both in economic importance and systematic interest. Subsequent investigations in West Virginia, in connection with the work of …
Notes Upon Variation Of Melissodes Lupina Cresson, T. D. A. Cockerell
Notes Upon Variation Of Melissodes Lupina Cresson, T. D. A. Cockerell
Ca
No abstract provided.
Some New Bees Of The Genus Coelioxys, T. D. A. Cockerell
A New Bee Of The Genus Megachile From Africa, T. D. A. Cockerell
A New Bee Of The Genus Megachile From Africa, T. D. A. Cockerell
Ca
No abstract provided.
Descriptions Of Hymenoptera From Baltic Amber, T. D. A. Cockerell
Descriptions Of Hymenoptera From Baltic Amber, T. D. A. Cockerell
Ca
No abstract provided.
Some European Bees, T. D. A. Cockerell
Le "Sans De La Direction" Chez Les Abeilles, Gaston Bonnier
Two New Bees, T. D. A. Cockerell
Description Of A New Parasitic Bee (Nomada) From Borneo, Peter Cameron
Description Of A New Parasitic Bee (Nomada) From Borneo, Peter Cameron
Bu
No abstract provided.
On Some Undescribed Indian Bees (Tetralonia, Megachile And Halictus) (Hym.), Peter Cameron
On Some Undescribed Indian Bees (Tetralonia, Megachile And Halictus) (Hym.), Peter Cameron
Bu
No abstract provided.
Description Of A New Species Of Ceratina From Borneo, Peter Cameron
Description Of A New Species Of Ceratina From Borneo, Peter Cameron
Bu
No abstract provided.
Description Of A New Genus And Species Of Cryptinae (Ichneumonidae) From Borneo, Peter Cameron
Description Of A New Genus And Species Of Cryptinae (Ichneumonidae) From Borneo, Peter Cameron
Bu
No abstract provided.
A New Bee From Tahiti, T. D. A. Cockerell
A New Name In Megachile, T. D. A. Cockerell
Bulletin No. 104 - The Storage Of Winter Precipitation In Soils, John A. Widtsoe
Bulletin No. 104 - The Storage Of Winter Precipitation In Soils, John A. Widtsoe
UAES Bulletins
It has been found that the production of one pound of dry plant substance on soils of average fertility, requires in humid districts not more than five hundred pounds of water, and in arid districts like Utah about seven hundred and fifty pounds. This indicates that the average rainfall of Utah, which is about twelve inches, if properly conserved in the soil, is sufficient to produce annually, without irrigation, from thirty to forty-five bushels of wheat to the acre, or corresponding yields of other crops. The realization of this truth has changed greatly our views of irrigation practices. The beginning …
On Three Undescribed Fossorial Hymenoptera (Crabro And Psen) From Borneo, Peter Cameron
On Three Undescribed Fossorial Hymenoptera (Crabro And Psen) From Borneo, Peter Cameron
Bu
No abstract provided.
Descriptions And Records Of Bees.— Xx., T. D. A. Cockerell
Tweede Bijdrage Tot De Kennis Onzer Hymenopterenfauna, Joseph Bequaert
Tweede Bijdrage Tot De Kennis Onzer Hymenopterenfauna, Joseph Bequaert
Ba
Als vervolg op mijne mededeeling op het voorgaande Congres (1), waarin ik een kort overzicht der Belgische Apiden-fauna gaf, wensch ik heden op dezelfde wijze eenige andere Angeldragende Hymenopteren-familiën te behandelen.
Three New Bees Of The Genus Nomada, T. D. A. Cockerell
A Deceptive Bee, T. D. A. Cockerell
Some Results Of The Florissant Expedition Of 1908, T. D. A. Cockerell
Some Results Of The Florissant Expedition Of 1908, T. D. A. Cockerell
Ca
No abstract provided.
On Some Bornean Species Of Trigona (Apidae), Peter Cameron
Los "Ápidos" De España Iii. Gen. Anthidium, José María Dumset Y Alonso
Los "Ápidos" De España Iii. Gen. Anthidium, José María Dumset Y Alonso
Du
No abstract provided.
A Contribution To The Aculeate Hymenoptera Of The Bombay Presidency (Cont.), Peter Cameron
A Contribution To The Aculeate Hymenoptera Of The Bombay Presidency (Cont.), Peter Cameron
Bu
No abstract provided.
Bees Of The Genus Nomada, Belonging To The Group Of N. Depressa Cresson, T. D. A. Cockerell
Bees Of The Genus Nomada, Belonging To The Group Of N. Depressa Cresson, T. D. A. Cockerell
Ca
No abstract provided.
New And Little-Known Bees, T. D. A. Cockerell
New And Little Known Bees, T. D. A. Cockerell