Did you mean: Arachnidia ?
Common Names: arachnids, aracnÃdeo, araignées, aracnÌdeo, aracnídeo, araignées
 1. Description of the larval and adult hindgut tract of the common spider crab Maja brachydactyla Balss, 1922 (Brachyura, Decapoda, Malacostraca).
Castejón D, Rotllant G, Ribes E, Durfort M, Guerao G Cell and tissue research Cell Tissue Res Description of the larval and adult hindgut tract of the common spider crab Maja brachydactyla Balss, 1922 (Brachyura, Decapoda, Malacostraca). 10.1007/s00441-021-03446-3 Arthropods are the most diversified animals on Earth. The morphology of the digestive system has been widely studied in insects; however, crustaceans have received comparatively little attention. This study describes the hindgut tract of the common spider crab Maja brachydactyla Balss, 1922, in larvae and adults using dissection, light and electron microscopical analyses. The hindgut tract maintains a similar general shape in larvae and adults. Major differences among stages are found in the morphology of epithelial cells and microspines, the thickness of the cuticle and connective-like tissue, and the presence of rosette glands (only in adults). Here, we provide the description of the sub-cellular structure of the folds, epithelium (conformed by tendon cells), musculature, and microspines of the hindgut of larvae and adults of M. brachydactyla. The morphological features of the hindgut of M. brachydactyla are compared with those of other arthropods (Insecta, Myriapoda and Arachnida). Our results suggest that the morphology of the hindgut is associated mainly with transport of faeces. In adults, the hindgut may also exert an osmoregulatory function, as described in other arthropods. At difference from holometabolous insets, the hindgut of M. brachydactyla (Decapoda) does not undergo a true metamorphic change during development, but major changes observed between larval and adult stages might respond to the different body size between life stages. Castejón Diego D http://orcid.org/0000-0003-1981-0268 Centro de Maricultura da Calheta, Av. D. Manuel I 7, 9370-135, Calheta, Madeira, Portugal. diego.castejon.dcb@gmail.com. Centre d'Aqüicultura, IRTA, Ctra. del Poble Nou Km 5.5.Sant Carles de la Rapita, 43540, Tarragona, Spain. diego.castejon.dcb@gmail.com. Rotllant Guiomar G Institut de Ciències del Mar, CSIC, Passeig Marítim de la Barceloneta 37-49, 08003, Barcelona, Spain. Ribes Enric E Unitat de Biologia Cel·lular, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain. Durfort Mercè M Unitat de Biologia Cel·lular, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain. Guerao Guillermo G , Barcelona, Spain. eng INIA Project RTA2011-00004-00-00 Ministerio de Economía, Industria y Competitividad, Gobierno de España FPI-INIA RTA2011-00004-00-00 Ministerio de Economía, Industria y Competitividad, Gobierno de España Journal Article 2021 04 09 Germany Cell Tissue Res 0417625 0302-766X IM Arthropoda Cuticular microspines Larval development Rosette glands Tendon cells 2020 06 02 2021 03 01 2021 4 9 12 47 2021 4 10 6 0 2021 4 10 6 0 aheadofprint 33835258 10.1007/s00441-021-03446-3 10.1007/s00441-021-03446-3 References, 2021 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0
2. Four new species of Phrynus, Lamarck (Arachnida: Amblypygi) from Mexico.
Joya DC Zootaxa, 2021 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0
3. Standardised arthropod (Arthropoda) inventory across natural and anthropogenic impacted habitats in the Azores archipelago.
Marcelino J, Borges PAV, Borges I, Pereira E, Santos V, Soares AO Biodiversity data journal, 2021 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0
4. Description of Dysdera zonsteini n. sp. (Arachnida: Araneae: Dysderidae) from Turkmenistan.
Dimitrov D Zootaxa, 2021 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0
5. Diversification of the mygalomorph spider genus Aname (Araneae: Anamidae) across the Australian arid zone: Tracing the evolution and biogeography of a continent-wide radiation.
Rix MG, Wilson JD, Huey JA, Hillyer MJ, Gruber K, Harvey MS Molecular phylogenetics and evolution, 2021 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0
6. Cybaeus (Araneae: Cybaeidae): the aspenicolens species group of the Californian clade.
Bennett R, Copley C, Copley D Zootaxa, 2021 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0
7. On the problematic placement of the fossil arthropod Devonopilio hutchinsoni in Opiliones (Arachnida).
Pérez-González A, Shultz JW Zootaxa, 2021 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0
8. Two new species of Plistobunus from China (Opiliones: Laniatores: Epedanidae).
Gong X, Kury AB, Zhang C Zootaxa, 2021 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0
9. WCO-Lite version 1.1: an online nomenclatural catalogue of harvestmen of the world (Arachnida, Opiliones) curated in TaxonWorks.
Kury AB, Mendes AC, Cardoso L, Kury MS, Granado AA, Yoder MJ, Kury IS Zootaxa, 2021 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0
10. Further studies on harvestman genus Homolophus (Opiliones: Phalangiidae), with descriptions of two new species.
Snegovaya NY, Cokendolpher JC Zootaxa, 2021 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0
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