Morphology and chaetotaxy of larval Hypodessus cruciatus (Regimbart) (Coleoptera: Dytiscidae: Hydroporinae), and analysis of the phylogenetic relationships of the Bidessini based on larval characters

The phylogenetic relationships of members of the hydroporine tribe Bidessini are investigated based on a cladistic analysis of 30 taxa and 43 characters from larval morphology. For this purpose, the three larval instars of Hypodessus cruciatus (Regimbart) are described and illustrated for the first...

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Autores principales: Michat, M.C., Alarie, Y.
Formato: JOUR
Materias:
Chaetotaxy
Diving beetle
Hypodessus
Larval morphology
Phylogeny
Anodocheilus
Bidessini
Coleoptera
Dytiscidae
Hydroporinae
Hydroporini
Hygrobiidae
Hyphydrini
Laccornellus
Liodessus
Spinula
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01650521_v43_n2_p135_Michat
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01650521_v43_n2_p135_Michat
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spelling todo:paper_01650521_v43_n2_p135_Michat2023-10-03T15:02:48Z Morphology and chaetotaxy of larval Hypodessus cruciatus (Regimbart) (Coleoptera: Dytiscidae: Hydroporinae), and analysis of the phylogenetic relationships of the Bidessini based on larval characters Michat, M.C. Alarie, Y. Chaetotaxy Diving beetle Hypodessus Larval morphology Phylogeny Anodocheilus Bidessini Coleoptera Dytiscidae Hydroporinae Hydroporini Hygrobiidae Hyphydrini Laccornellus Liodessus Spinula The phylogenetic relationships of members of the hydroporine tribe Bidessini are investigated based on a cladistic analysis of 30 taxa and 43 characters from larval morphology. For this purpose, the three larval instars of Hypodessus cruciatus (Regimbart) are described and illustrated for the first time, with particular emphasis on the morphometry and chaetotaxy. The consensus cladogram supports a monophyletic origin of the Bidessini based on the absence of the primary pore ABc, a unique feature within Hydroporinae. Amarodytes Regimbart is sister to the other Bidessini genera studied, being characterized by the presence of secondary setae on the first urogomphomere and the presence of an occipital suture in first-instar larva. Liodessus Guignot and Anodocheilus Babington are a monophyletic group and share the absence of a ventroapical spinula on the third antennomere. Hypodessus, Glareadessus Wewalka & Bistrom and the clade Liodessus + Anodocheilus form a polytomy. Bidessini is resolved as derived within Hydroporinae, as part of a clade along with Hygrotini, Vatellini, Hyphydrini and Hydroporini (excluding Laccornellus Roughley & Wolfe). Members of this clade share the absence of a galea and of setae MX8 and MX9. Within this grouping, Bidessini shares a common origin with Vatellini, Hyphydrini and part of Hydroporini, all these taxa being characterized by a cardo fused to the stipes. © 2008 Taylor & Francis. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01650521_v43_n2_p135_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 Chaetotaxy
Diving beetle
Hypodessus
Larval morphology
Phylogeny
Anodocheilus
Bidessini
Coleoptera
Dytiscidae
Hydroporinae
Hydroporini
Hygrobiidae
Hyphydrini
Laccornellus
Liodessus
Spinula
spellingShingle Chaetotaxy
Diving beetle
Hypodessus
Larval morphology
Phylogeny
Anodocheilus
Bidessini
Coleoptera
Dytiscidae
Hydroporinae
Hydroporini
Hygrobiidae
Hyphydrini
Laccornellus
Liodessus
Spinula
Michat, M.C.
Alarie, Y.
Morphology and chaetotaxy of larval Hypodessus cruciatus (Regimbart) (Coleoptera: Dytiscidae: Hydroporinae), and analysis of the phylogenetic relationships of the Bidessini based on larval characters
topic_facet Chaetotaxy
Diving beetle
Hypodessus
Larval morphology
Phylogeny
Anodocheilus
Bidessini
Coleoptera
Dytiscidae
Hydroporinae
Hydroporini
Hygrobiidae
Hyphydrini
Laccornellus
Liodessus
Spinula
description The phylogenetic relationships of members of the hydroporine tribe Bidessini are investigated based on a cladistic analysis of 30 taxa and 43 characters from larval morphology. For this purpose, the three larval instars of Hypodessus cruciatus (Regimbart) are described and illustrated for the first time, with particular emphasis on the morphometry and chaetotaxy. The consensus cladogram supports a monophyletic origin of the Bidessini based on the absence of the primary pore ABc, a unique feature within Hydroporinae. Amarodytes Regimbart is sister to the other Bidessini genera studied, being characterized by the presence of secondary setae on the first urogomphomere and the presence of an occipital suture in first-instar larva. Liodessus Guignot and Anodocheilus Babington are a monophyletic group and share the absence of a ventroapical spinula on the third antennomere. Hypodessus, Glareadessus Wewalka & Bistrom and the clade Liodessus + Anodocheilus form a polytomy. Bidessini is resolved as derived within Hydroporinae, as part of a clade along with Hygrotini, Vatellini, Hyphydrini and Hydroporini (excluding Laccornellus Roughley & Wolfe). Members of this clade share the absence of a galea and of setae MX8 and MX9. Within this grouping, Bidessini shares a common origin with Vatellini, Hyphydrini and part of Hydroporini, all these taxa being characterized by a cardo fused to the stipes. © 2008 Taylor & Francis.
format JOUR
author Michat, M.C.
Alarie, Y.
author_facet Michat, M.C.
Alarie, Y.
author_sort Michat, M.C.
title Morphology and chaetotaxy of larval Hypodessus cruciatus (Regimbart) (Coleoptera: Dytiscidae: Hydroporinae), and analysis of the phylogenetic relationships of the Bidessini based on larval characters
title_short Morphology and chaetotaxy of larval Hypodessus cruciatus (Regimbart) (Coleoptera: Dytiscidae: Hydroporinae), and analysis of the phylogenetic relationships of the Bidessini based on larval characters
title_full Morphology and chaetotaxy of larval Hypodessus cruciatus (Regimbart) (Coleoptera: Dytiscidae: Hydroporinae), and analysis of the phylogenetic relationships of the Bidessini based on larval characters
title_fullStr Morphology and chaetotaxy of larval Hypodessus cruciatus (Regimbart) (Coleoptera: Dytiscidae: Hydroporinae), and analysis of the phylogenetic relationships of the Bidessini based on larval characters
title_full_unstemmed Morphology and chaetotaxy of larval Hypodessus cruciatus (Regimbart) (Coleoptera: Dytiscidae: Hydroporinae), and analysis of the phylogenetic relationships of the Bidessini based on larval characters
title_sort morphology and chaetotaxy of larval hypodessus cruciatus (regimbart) (coleoptera: dytiscidae: hydroporinae), and analysis of the phylogenetic relationships of the bidessini based on larval characters
url http://hdl.handle.net/20.500.12110/paper_01650521_v43_n2_p135_Michat
work_keys_str_mv AT michatmc morphologyandchaetotaxyoflarvalhypodessuscruciatusregimbartcoleopteradytiscidaehydroporinaeandanalysisofthephylogeneticrelationshipsofthebidessinibasedonlarvalcharacters
AT alariey morphologyandchaetotaxyoflarvalhypodessuscruciatusregimbartcoleopteradytiscidaehydroporinaeandanalysisofthephylogeneticrelationshipsofthebidessinibasedonlarvalcharacters
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