Results 11 to 20 of about 18,836 (239)

Origin of Tracheæ in Arthropoda [PDF]

open access: bronzeNature, 1878
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
openalex   +4 more sources

THE SPERMATOZOON OF ARTHROPODA [PDF]

open access: bronzeThe Journal of Cell Biology, 1970
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
openalex   +9 more sources

Arthropoda

open access: yes, 2020
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.
openaire   +4 more sources

New artiopodan euarthropods from the Chengjiang fauna (Cambrian, Stage 3) at Malong, Yunnan, China [PDF]

open access: yesActa Palaeontologica Polonica, 2023
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
doaj   +1 more source

Zoomorphic variation with copulation duration in Centrobolus [PDF]

open access: yesArthropods, 2020
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
doaj  

Arthropoda

open access: yes, 2013
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.
openaire   +1 more source

Arthropod fauna recorded in flowers of apomictic Taraxacum section Ruderalia

open access: yesEuropean Journal of Entomology, 2016
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
doaj   +1 more source

Description of Limb Anomalies Resulting from Molt Irregularities in Ammothea hilgendorfi (Pycnogonida: Ammotheidae)

open access: yesArthropoda
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
doaj   +1 more source

The use of collembolans (Collembola: Arthropoda) as a biological indicator in comparison of different land use and seasons in Karabük

open access: yesTurkish Journal of Forestry, 2020
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
doaj   +1 more source

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