Results 1 to 10 of about 19,011 (236)
THE SPERMATOZOON OF ARTHROPODA [PDF]
The Journal of Cell Biology, 1969 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 ...
BACCETTI, B., DALLAI, R., GIUSTI, F.
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Origin of Tracheæ in Arthropoda [PDF]
Nature, 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
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Pax6 and eye development in Arthropoda
Arthropod Structure and Development, 2006 The arthropod compound eye is one of the three main types of eyes observed in the animal kingdom. Comparison of the eyes seen in Insecta, Crustacea, Myriapoda and Chelicerata reveals considerable variation in terms of overall cell number, cell positioning, and photoreceptor rhabdomeres, yet, molecular data suggest there may be unexpected similarities ...
Patrick Callaerts +2 more
exaly +5 more sources
Another crack in the Dark Taxa wall: a custom DNA barcoding protocol for the species-rich and common Eurytomidae (Hymenoptera, Chalcidoidea) [PDF]
Biodiversity Data Journal, 2023 DNA barcodes are a great tool for accelerated species identification and for complementing species delimitation. Furthermore, DNA barcode reference libraries are the decisive backbone feature for any metabarcoding study in biodiversity monitoring ...
Samin Jafari +4 more
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European Journal of Taxonomy, 2023 The number of currently described species of Afrotropical parasitoid wasps does not reflect the true species diversity. One of the most severely understudied parasitoid wasp groups is Ceraphronoidea.
Tobias Salden, Ralph S. Peters
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Some Comments on the Evolution of the Arthropoda [PDF]
Evolution, 1959 Howard E. Evans
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New data on the anatomy of fuxianhuiid arthropod Guangweicaris spinatus from the lower Cambrian Guanshan Biota, Yunnan, China [PDF]
Acta Palaeontologica Polonica, 2020 The fuxianhuiid arthropod Guangweicaris spinatus, from the lower Cambrian (Series 2, Stage 4), Guanshan Biota (Wulongqing Member, Canglangpu Formation), located in the vicinity of Kunming (Yunnan Province, southwest China), is redescribed based on new ...
Hong Chen +4 more
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The Cambrian Explosion: macroevolution and biomineralization
Academia Biology, 2023 Recent advances in our understanding of the Cambrian evolutionary diversification event (Cambrian Explosion) show that, although eumetazoan stem taxa were present in the late Proterozoic, a tremendous burst of macroevolutionary change occurred near the ...
Mark A. S. McMenamin
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Annotated catalog of Vietnamese Trichoptera (Insecta) [PDF]
Opuscula Zoologica Instituti Zoosystematici et Oecologici Universitatis Budapestinensis, 2023 All 835 valid species of caddisflies recorded from Vietnam by the end of 2021 are cataloged. The catalog is annotated with information about reference to original description where the species was described, type locality, depository institution of the ...
Johanson, Kjell Arne +2 more
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, 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.
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