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Articles 10861 - 10890 of 11473
Full-Text Articles in Life Sciences
Some Experimental Observations Concerning The Behavior Of Various Bees In Their Visits To Cotton Blossoms, H. A. Allard
Some Experimental Observations Concerning The Behavior Of Various Bees In Their Visits To Cotton Blossoms, H. A. Allard
A
In the past a great deal of experimental work has been carried on to determine how flowers attract insects. The conclusions reached have been various and have served to provoke lively discussions as to the relative importance of the visual sense and the olfactory sense in guiding insects to flowers.
New And Little Known Bees, T. D. A. Cockerell
The Bees Of The Solomon Islands, T. D. A. Cockerell
A New Psenid Wasp From Peru, T. D. A. Cockerell
Descriptions And Records Of Bees - Xxxviii, T. D. A. Cockerell
Descriptions And Records Of Bees - Xxxviii, T. D. A. Cockerell
Co
No abstract provided.
A List Of The Bees Of The Genus Perdita Smith, T. D. A. Cockerell
A List Of The Bees Of The Genus Perdita Smith, T. D. A. Cockerell
Co
No abstract provided.
Descriptions Of New Hymenoptera No. 3, J. C. Crawford
Descriptions Of New Hymenoptera No. 3, J. C. Crawford
Co
Most of the species described in this paper were received for determination through the Bureau of Entomology, United States Department of Agriculture, and are of economic importance. The figures made to illustrate certain details were all drawn with the aid of the camera lucida. Comparative measurements were made with an eye-piece micrometer used in the Zeiss binocular microscope.
Names Applied To Bees Of The Genus Nomada Found In North America, T. D. A. Cockerell
Names Applied To Bees Of The Genus Nomada Found In North America, T. D. A. Cockerell
Co
No abstract provided.
Descriptions And Records Of Bees - Xxxvi, T. D. A. Cockerell
Bees In The Collection Of The United States National Museum. 2, T. D. A. Cockerell
Bees In The Collection Of The United States National Museum. 2, T. D. A. Cockerell
Co
No abstract provided.
Bees In The Collection Of The United States National Museum. 1, T. D. A. Cockerell
Bees In The Collection Of The United States National Museum. 1, T. D. A. Cockerell
Co
No abstract provided.
The Entomologist: An Illustrated Journal Of General Entomology No. 574, Kenneth J. Morton, Rupert Stenton, T. Miyake, C. G. Nurse, W. J. Lucas, Richard South, L. W. Newman, T. D. A. Cockerell, W. J. Lucas, W. L. Distant, A. E. Wileman
The Entomologist: An Illustrated Journal Of General Entomology No. 574, Kenneth J. Morton, Rupert Stenton, T. Miyake, C. G. Nurse, W. J. Lucas, Richard South, L. W. Newman, T. D. A. Cockerell, W. J. Lucas, W. L. Distant, A. E. Wileman
Co
No abstract provided.
Descriptions Of New Hymenoptera. 1, J. C. Crawford
Descriptions Of New Hymenoptera. 1, J. C. Crawford
Co
In this paper some new parasites from the United States are described, together with two new species of bees which were found while arranging part of the collections of bees. There are also new species of parasites from Japan, described mostly from a small collection of reared Hymenoptera sent in for determination by Mr. Takeshi Fukai, of Konosu, Saitama, Japan.
The Present Methods Of Teaching Entomology, J. H. Comstock
The Present Methods Of Teaching Entomology, J. H. Comstock
Department of Entomology: Faculty Publications
The present methods of teaching entomology followed in the United States have been developed almost entirely by men now teaching this subject. A second generation of teachers has begun its work; but the first is still on the stage. We h3i¥e progressed far enough, however, to make it worth while for the teachers to compare methods, in order that each may profit by the experience of the others. In a conference of this kind the contribution of each to the discussion will be, naturally, at first, merely a statement of the methods evolved in our several widely separated institutions. Then …
Present Methods Of Teaching Entomology, H. T. Fernald
Present Methods Of Teaching Entomology, H. T. Fernald
Department of Entomology: Faculty Publications
In teaching entomology, much depends upon the ultimate aim of the student. A course in introductory entomology, whether as a required or an elective subject is sure to include many students who will not continue the subject farther. It is at least probable, that these students will form over half of the class, and accordingly, the introductory treatment should be arranged on the basis of the greatest good to the greatest number. This will usually mean some slight knowledge of insect anatomy, particularly external anatomy, and a general survey of insects as a group, with special attention to the pests …
The Present Methods Of Teaching Entomology, Herbert Osborn
The Present Methods Of Teaching Entomology, Herbert Osborn
Department of Entomology: Faculty Publications
In a discussion of the methods of teaching entomology, it is almost necessary to take a hasty view of the growth of the subject and of the different methods of imparting knowledge in it during the past half century. We need scarcely go back of this, because for the United States, at least, the growth of the teaching of entomology as a subject included in a college curriculum has had its growth within that time. In fact, practically all of the development of the teaching outside of two or three localities has been within the last twenty-five' years. Naturally the …
A New Bee From New York State, T. D. A. Cockerell
Some Bees From Western Canada, T. D. A. Cockerell
Apidologische Studien. (Hym.), J. D. Alfken
Apidologische Studien. (Hym.), J. D. Alfken
A
Diese Art tritt in 3 verschiedenen Formen auf: 1. einer Frühjahrsgeneration mit dunklem Hinterleib, A. Trimmerana K., 2. einer Frühjahrsgeneration mit teilweise rotem Hinterleib, A. spinigera K., und 3. einer Sommergeneration, A. Rosae Pz. Der erste, welcher die Zusammengehörigkeit dieser 3 Formen oder Rassen erkannte, war Edward Saunders. In seiner Synopsis of British Hymenoptora, P. I. (Trans. Ent. Soc. 1882, p. 243) zieht er A. spinigera K. als Varietät zu A. Trimmerana K., und in den Hymenoptera Aculeata of the British Islands 1896, p. 237, werden die beiden genannten Formen als Varietäten zu A. Rosae Pz. gestellt. Meines Erachtens dürfen …
Geschlechtsdimorphismus In Der Bienengattung Thygater Holmbg. (Hym.), A. W. Bertoni, C. Schrottky
Geschlechtsdimorphismus In Der Bienengattung Thygater Holmbg. (Hym.), A. W. Bertoni, C. Schrottky
Ba
Als Nachtrag unserer Arbeit: "Beitrag zur Kennt.nis der mit Tetmlonia verwandten Bienen aus Südamerika", Zool. Jahrbücher, Bd. 29, bringen wir folgende Beobachtung.
Eine Neue Ungarische Andrena-Art, J. D. Alfken
Eine Neue Ungarische Andrena-Art, J. D. Alfken
A
Schwarz, schmutzig graugelb bebaart; der Kopf ist uberall struppig graugelb, am Kopf etwas heller behaart. Anhang der Oberlippe vorn schwach ausgebuchtet. Clypeus sehr fein gekornelt, ausserdem zerstreut und ziemlich stark punktiert, oben ein wenig quergerieft. Stirn fein und dicht langsgerieft. Augenstreifen sammetschwarz. Schlafen ziemlich breit, ausserordentlich fein gekornelt und zerstreut erhaben punktiert. Fuhler schwaz, Geissel unten rothbraun.
Psammocharidae, Nathan Banks
Psammocharidae, Nathan Banks
An
I make a new name for our species without hairs on the metanotum, not knowing whether it will include the typical Ageuia or not. The type of Melanaporus Ashm. is a two-celled form of P. argenteus or a close ally.
A New Thynnid Wasp From Brazil (Hym.), James Chester Bradley
Biologisches Über Südafrikanische Hymenopteren (Schluss Aus Heft 4), H. Brauns
Biologisches Über Südafrikanische Hymenopteren (Schluss Aus Heft 4), H. Brauns
Bo
No abstract provided.
Biologisches Über Südafrikanische Hymenopteren (Fortsetzung Aus Heft 3), H. Brauns
Biologisches Über Südafrikanische Hymenopteren (Fortsetzung Aus Heft 3), H. Brauns
Bo
No abstract provided.
Present Methods Of Teaching Entomology At The University Of Nebraska, Lawrence Bruner
Present Methods Of Teaching Entomology At The University Of Nebraska, Lawrence Bruner
Department of Entomology: Faculty Publications
'When our Secretary sent out his preliminary notification of this meeting and asked me to take part in a discussion of "present methods of teaching Entomology," the matter at first seemed of little importance so far, at least, as the speaker was concerned. However, after giving the subject some thought I have decided that it might be well at least to take the time and trouble to attempt to explain briefly a few of the methods by which the student in Nebraska is enabled to absorb some entomological information. In order to do this with an unbiased feeling it might …
A New Anthidium From New Jersey, J. C. Crawford
Some Bees From Eldora, Colorado, T. D. A. Cockerell
Some Insects From Steamboat Springs, Colo. - Ii, T. D. A. Cockerell
Some Insects From Steamboat Springs, Colo. - Ii, T. D. A. Cockerell
Co
No abstract provided.
Some Bees From High Altitudes In The Himilaya Mountains, T. D. A. Cockerell
Some Bees From High Altitudes In The Himilaya Mountains, T. D. A. Cockerell
Co
No abstract provided.