Description of the second and third instars of Aspidytes wrasei Balke, Ribera & Beutel, 2003, with comments on the identification of larvae of Aspidytes Ribera, Beutel, Balke & Vogler, 2002 (Coleoptera: Aspidytidae), and phylogenetic considerations

The second- and third instar larvae of the cliff water beetle Aspidytes wrasei Balke, Ribera & Beutel, 2003 are studied for the first time with special emphasis on morphometry and chaetotaxy. A review of the characters useful in the identification of larvae of Aspidytes Ribera, Beutel, Balke &am...

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Detalles Bibliográficos
Autor principal: Michat, Mariano C.
Publicado: 2014
Materias:
Aspidytes
Aspidytidae
Chaetotaxy
Coleoptera
Larva
Morphometry
animal
beetle
classification
genetics
larva
phylogeny
physiology
species difference
ultrastructure
Animals
Beetles
Phylogeny
Species Specificity
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11755326_v3881_n4_p362_Michat
http://hdl.handle.net/20.500.12110/paper_11755326_v3881_n4_p362_Michat
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_11755326_v3881_n4_p362_Michat
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spelling paper:paper_11755326_v3881_n4_p362_Michat2025-07-30T18:45:18Z Description of the second and third instars of Aspidytes wrasei Balke, Ribera & Beutel, 2003, with comments on the identification of larvae of Aspidytes Ribera, Beutel, Balke & Vogler, 2002 (Coleoptera: Aspidytidae), and phylogenetic considerations Michat, Mariano C. Aspidytes Aspidytidae Chaetotaxy Coleoptera Larva Morphometry Aspidytes Aspidytidae Coleoptera animal beetle classification genetics larva phylogeny physiology species difference ultrastructure Animals Beetles Larva Phylogeny Species Specificity The second- and third instar larvae of the cliff water beetle Aspidytes wrasei Balke, Ribera & Beutel, 2003 are studied for the first time with special emphasis on morphometry and chaetotaxy. A review of the characters useful in the identification of larvae of Aspidytes Ribera, Beutel, Balke & Vogler, 2002 is presented. Confirming previous findings, larvae of this genus are unique within Hydradephaga in the dorsally oriented spiracles on the abdominal segment VIII of instars II and III. The inclusion of Aspidytidae within the superfamily Dytiscoidea is reinforced by the following putative synapomorphies: presence of pore PAp, proximal insertion of pore ANg, apical or subapical insertion of seta MX8, presence of pore LAd, and distal insertion of seta CO6. Larvae of A. wrasei differ from those of A. niobe Ribera, Beutel, Balke & Vogler, 2002 in several significant characters that may indicate that both species have a long history of independent evolution. Copyright © 2014 Magnolia Press. Fil:Michat, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11755326_v3881_n4_p362_Michat http://hdl.handle.net/20.500.12110/paper_11755326_v3881_n4_p362_Michat
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Aspidytes
Aspidytidae
Chaetotaxy
Coleoptera
Larva
Morphometry
Aspidytes
Aspidytidae
Coleoptera
animal
beetle
classification
genetics
larva
phylogeny
physiology
species difference
ultrastructure
Animals
Beetles
Larva
Phylogeny
Species Specificity
spellingShingle Aspidytes
Aspidytidae
Chaetotaxy
Coleoptera
Larva
Morphometry
Aspidytes
Aspidytidae
Coleoptera
animal
beetle
classification
genetics
larva
phylogeny
physiology
species difference
ultrastructure
Animals
Beetles
Larva
Phylogeny
Species Specificity
Michat, Mariano C.
Description of the second and third instars of Aspidytes wrasei Balke, Ribera & Beutel, 2003, with comments on the identification of larvae of Aspidytes Ribera, Beutel, Balke & Vogler, 2002 (Coleoptera: Aspidytidae), and phylogenetic considerations
topic_facet Aspidytes
Aspidytidae
Chaetotaxy
Coleoptera
Larva
Morphometry
Aspidytes
Aspidytidae
Coleoptera
animal
beetle
classification
genetics
larva
phylogeny
physiology
species difference
ultrastructure
Animals
Beetles
Larva
Phylogeny
Species Specificity
description The second- and third instar larvae of the cliff water beetle Aspidytes wrasei Balke, Ribera & Beutel, 2003 are studied for the first time with special emphasis on morphometry and chaetotaxy. A review of the characters useful in the identification of larvae of Aspidytes Ribera, Beutel, Balke & Vogler, 2002 is presented. Confirming previous findings, larvae of this genus are unique within Hydradephaga in the dorsally oriented spiracles on the abdominal segment VIII of instars II and III. The inclusion of Aspidytidae within the superfamily Dytiscoidea is reinforced by the following putative synapomorphies: presence of pore PAp, proximal insertion of pore ANg, apical or subapical insertion of seta MX8, presence of pore LAd, and distal insertion of seta CO6. Larvae of A. wrasei differ from those of A. niobe Ribera, Beutel, Balke & Vogler, 2002 in several significant characters that may indicate that both species have a long history of independent evolution. Copyright © 2014 Magnolia Press.
author Michat, Mariano C.
author_facet Michat, Mariano C.
author_sort Michat, Mariano C.
title Description of the second and third instars of Aspidytes wrasei Balke, Ribera & Beutel, 2003, with comments on the identification of larvae of Aspidytes Ribera, Beutel, Balke & Vogler, 2002 (Coleoptera: Aspidytidae), and phylogenetic considerations
title_short Description of the second and third instars of Aspidytes wrasei Balke, Ribera & Beutel, 2003, with comments on the identification of larvae of Aspidytes Ribera, Beutel, Balke & Vogler, 2002 (Coleoptera: Aspidytidae), and phylogenetic considerations
title_full Description of the second and third instars of Aspidytes wrasei Balke, Ribera & Beutel, 2003, with comments on the identification of larvae of Aspidytes Ribera, Beutel, Balke & Vogler, 2002 (Coleoptera: Aspidytidae), and phylogenetic considerations
title_fullStr Description of the second and third instars of Aspidytes wrasei Balke, Ribera & Beutel, 2003, with comments on the identification of larvae of Aspidytes Ribera, Beutel, Balke & Vogler, 2002 (Coleoptera: Aspidytidae), and phylogenetic considerations
title_full_unstemmed Description of the second and third instars of Aspidytes wrasei Balke, Ribera & Beutel, 2003, with comments on the identification of larvae of Aspidytes Ribera, Beutel, Balke & Vogler, 2002 (Coleoptera: Aspidytidae), and phylogenetic considerations
title_sort description of the second and third instars of aspidytes wrasei balke, ribera & beutel, 2003, with comments on the identification of larvae of aspidytes ribera, beutel, balke & vogler, 2002 (coleoptera: aspidytidae), and phylogenetic considerations
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11755326_v3881_n4_p362_Michat
http://hdl.handle.net/20.500.12110/paper_11755326_v3881_n4_p362_Michat
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