Results 11 to 20 of about 18,836 (239)
Origin of Tracheæ in Arthropoda [PDF]
IN NATURE (vol. xvii. p. 284) is a notice of a work by Dr. Palmen, of Helsingfors, on the morphology of the tracheal system. From the wording of the notice it appears as if the views of Dr. Palmen as to the origin of tracheae from skinglands, and as to the importance of Peripatus as an ancestral form of the Tracheata, were new to science. I was, to the
Henry Moseley
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THE SPERMATOZOON OF ARTHROPODA [PDF]
In this work the spermatozoon of Chloeon dipteron (Ephemeroptera) is examined. The three most important features are that (a) the acrosome is very brief; (b) the mitochondrial derivative is represented by a long mitochondrion with transverse cristae and by a crystalline mass enveloped in a separated membrane; (c) the axial filament of the tail lacks ...
B. Baccetti+2 more
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SOME COMMENTS ON THE EVOLUTION OF THE ARTHROPODA [PDF]
Howard E. Evans
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Published as part of Burks, Roger A. & Heraty, John M., 2020, First described fossil representatives of the parasitoid wasp taxa Asaphesinae n. n. and Eunotinae (Hymenoptera: Chalcidoidea: Pteromalidae sensu lato) from Eocene Baltic amber, pp. 801-812 in Journal of Natural History 54 (9) on page 803, DOI: 10.1080/00222933.2020.1747653, http://zenodo ...
Burks, Roger A., Heraty, John M.
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New artiopodan euarthropods from the Chengjiang fauna (Cambrian, Stage 3) at Malong, Yunnan, China [PDF]
The artiopodans, consisting of trilobites and their relatives, were a major euarthropod group in the Paleozoic. Since the first discovery of Naraoia from the Chengjiang fauna, a significant number of artiopodans have been subsequently found in China ...
Yuyan Zhu+3 more
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Zoomorphic variation with copulation duration in Centrobolus [PDF]
Centrobolus typically has prolonged copulation as a form of syn-copula mateguarding. Variations in the copulation duration were calculated and analysed in four species of the millipede genus Centrobolus.
Mark Cooper
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Published as part of Zahniser, James N. & Dietrich, Chris H., 2013, A review of the tribes of Deltocephalinae (Hemiptera: Auchenorrhyncha: Cicadellidae), pp. 1-211 in European Journal of Taxonomy 45 on pages 159-161, DOI: 10.5852/ejt.2013.45, http://zenodo.org/record ...
Zahniser, James N., Dietrich, Chris H.
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Arthropod fauna recorded in flowers of apomictic Taraxacum section Ruderalia
Flowers of dicotyledonous plants host communities of arthropod species. We studied the community associated with dandelion (Taraxacum section Ruderalia), a complex of apomictic micro-species abundant in central Europe.
Alois HONĚK+15 more
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Limb anomalies are widespread and diversified in arthropods. From trilobites to insects, they range from the loss to the addition or fusion of legs and may appear congenitally or be induced experimentally (e.g., amputation or injury).
Antoine Flandroit+2 more
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Land use types and seasonal conditions are effective factors on soil properties and soil quality. One of the criteria of soil quality is biological indicators.
Ahmet Duyar
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