Respiratory system morphology and the Phylogeny of Haplogyne spiders (Araneae, Araneomorphae)

The morphology of the respiratory system of basal araneomorph spiders, the Haplogynae and of Entelegynae with female haplogyne genitalia, is reviewed. The homology of cuticular respiratory structures is discussed in light of evidence from abdominal muscles and ontogeny. Ten morphological characters...

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Detalles Bibliográficos
Autor principal: Ramírez, M.J.
Formato: JOUR
Materias:
Abdominal muscles
Cladistics
Tracheae
Araneae
Araneomorphae
Diguetidae
Entelegynae
Haplogynae
Pholcidae
Plectreuridae
Scytodidae
Sicariidae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01618202_v28_n2_p149_Ramirez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_01618202_v28_n2_p149_Ramirez2023-10-03T15:01:23Z Respiratory system morphology and the Phylogeny of Haplogyne spiders (Araneae, Araneomorphae) Ramírez, M.J. Abdominal muscles Cladistics Tracheae Araneae Araneomorphae Diguetidae Entelegynae Haplogynae Pholcidae Plectreuridae Scytodidae Sicariidae The morphology of the respiratory system of basal araneomorph spiders, the Haplogynae and of Entelegynae with female haplogyne genitalia, is reviewed. The homology of cuticular respiratory structures is discussed in light of evidence from abdominal muscles and ontogeny. Ten morphological characters (13 transformations) were coded, mainly from the posterior pulmonary (or tracheal) segment, and other 7 non-respiratory characters here added. The new data were combined with those of a previously published analysis, resulting in a data matrix of 82 characters scored for 44 terminals. The evolution of the tracheal system is traced through the phylogeny of basal spiders and the Haplogynae, and new synapomorphies are provided. Elongate 3rd abdominal entapophyses are a synapomorphy of Araneomorphae. True median tracheae are a synapomorphy of Entelegynae (convergently with Austrochilinae), as is the extreme posterior displacement and narrowing of the tracheal spiracle. Tetrablemmidae, Pholcidae, Diguetidae and Plectreuridae are united by the absence of tracheae; and these taxa are united with Scytodidae, Sicariidae and Drymusidae by the fusion of 3rd entapophyses. Fil:Ramírez, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01618202_v28_n2_p149_Ramirez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Abdominal muscles
Cladistics
Tracheae
Araneae
Araneomorphae
Diguetidae
Entelegynae
Haplogynae
Pholcidae
Plectreuridae
Scytodidae
Sicariidae
spellingShingle Abdominal muscles
Cladistics
Tracheae
Araneae
Araneomorphae
Diguetidae
Entelegynae
Haplogynae
Pholcidae
Plectreuridae
Scytodidae
Sicariidae
Ramírez, M.J.
Respiratory system morphology and the Phylogeny of Haplogyne spiders (Araneae, Araneomorphae)
topic_facet Abdominal muscles
Cladistics
Tracheae
Araneae
Araneomorphae
Diguetidae
Entelegynae
Haplogynae
Pholcidae
Plectreuridae
Scytodidae
Sicariidae
description The morphology of the respiratory system of basal araneomorph spiders, the Haplogynae and of Entelegynae with female haplogyne genitalia, is reviewed. The homology of cuticular respiratory structures is discussed in light of evidence from abdominal muscles and ontogeny. Ten morphological characters (13 transformations) were coded, mainly from the posterior pulmonary (or tracheal) segment, and other 7 non-respiratory characters here added. The new data were combined with those of a previously published analysis, resulting in a data matrix of 82 characters scored for 44 terminals. The evolution of the tracheal system is traced through the phylogeny of basal spiders and the Haplogynae, and new synapomorphies are provided. Elongate 3rd abdominal entapophyses are a synapomorphy of Araneomorphae. True median tracheae are a synapomorphy of Entelegynae (convergently with Austrochilinae), as is the extreme posterior displacement and narrowing of the tracheal spiracle. Tetrablemmidae, Pholcidae, Diguetidae and Plectreuridae are united by the absence of tracheae; and these taxa are united with Scytodidae, Sicariidae and Drymusidae by the fusion of 3rd entapophyses.
format JOUR
author Ramírez, M.J.
author_facet Ramírez, M.J.
author_sort Ramírez, M.J.
title Respiratory system morphology and the Phylogeny of Haplogyne spiders (Araneae, Araneomorphae)
title_short Respiratory system morphology and the Phylogeny of Haplogyne spiders (Araneae, Araneomorphae)
title_full Respiratory system morphology and the Phylogeny of Haplogyne spiders (Araneae, Araneomorphae)
title_fullStr Respiratory system morphology and the Phylogeny of Haplogyne spiders (Araneae, Araneomorphae)
title_full_unstemmed Respiratory system morphology and the Phylogeny of Haplogyne spiders (Araneae, Araneomorphae)
title_sort respiratory system morphology and the phylogeny of haplogyne spiders (araneae, araneomorphae)
url http://hdl.handle.net/20.500.12110/paper_01618202_v28_n2_p149_Ramirez
work_keys_str_mv AT ramirezmj respiratorysystemmorphologyandthephylogenyofhaplogynespidersaraneaearaneomorphae
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