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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Autor principal:	Ramírez, Martín Javier
Publicado:	2000
Materias:	Abdominal muscles Cladistics Tracheae Araneae Araneomorphae Diguetidae Entelegynae Haplogynae Pholcidae Plectreuridae Scytodidae Sicariidae
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01618202_v28_n2_p149_Ramirez 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

id	paper:paper_01618202_v28_n2_p149_Ramirez
record_format	dspace
spelling	paper:paper_01618202_v28_n2_p149_Ramirez2023-06-08T15:13:31Z Respiratory system morphology and the Phylogeny of Haplogyne spiders (Araneae, Araneomorphae) Ramírez, Martín Javier 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. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01618202_v28_n2_p149_Ramirez 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, Martín Javier 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.
author	Ramírez, Martín Javier
author_facet	Ramírez, Martín Javier
author_sort	Ramírez, Martín Javier
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)
publishDate	2000
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01618202_v28_n2_p149_Ramirez http://hdl.handle.net/20.500.12110/paper_01618202_v28_n2_p149_Ramirez
work_keys_str_mv	AT ramirezmartinjavier respiratorysystemmorphologyandthephylogenyofhaplogynespidersaraneaearaneomorphae
_version_	1768544312308531200

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

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