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Abstract:

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.

Registro:

Documento: Artículo
Título:Morphology and chaetotaxy of larval Hypodessus cruciatus (Regimbart) (Coleoptera: Dytiscidae: Hydroporinae), and analysis of the phylogenetic relationships of the Bidessini based on larval characters
Autor:Michat, M.C.; Alarie, Y.
Filiación:Laboratorio de Entomologia, DBBE, Universidad de Buenos Aires, Buenos Aires, Argentina
Laurentian University, Sudbury, ON, Canada
Palabras clave:Chaetotaxy; Diving beetle; Hypodessus; Larval morphology; Phylogeny; Anodocheilus; Bidessini; Coleoptera; Dytiscidae; Hydroporinae; Hydroporini; Hygrobiidae; Hyphydrini; Laccornellus; Liodessus; Spinula
Año:2008
Volumen:43
Número:2
Página de inicio:135
Página de fin:146
DOI: http://dx.doi.org/10.1080/01650520701430553
Título revista:Studies on Neotropical Fauna and Environment
Título revista abreviado:Stud. Neotrop. Fauna Environ.
ISSN:01650521
CODEN:SNFED
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01650521_v43_n2_p135_Michat

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Citas:

---------- APA ----------
Michat, M.C. & Alarie, Y. (2008) . Morphology and chaetotaxy of larval Hypodessus cruciatus (Regimbart) (Coleoptera: Dytiscidae: Hydroporinae), and analysis of the phylogenetic relationships of the Bidessini based on larval characters. Studies on Neotropical Fauna and Environment, 43(2), 135-146.
http://dx.doi.org/10.1080/01650520701430553
---------- CHICAGO ----------
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" . Studies on Neotropical Fauna and Environment 43, no. 2 (2008) : 135-146.
http://dx.doi.org/10.1080/01650520701430553
---------- MLA ----------
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" . Studies on Neotropical Fauna and Environment, vol. 43, no. 2, 2008, pp. 135-146.
http://dx.doi.org/10.1080/01650520701430553
---------- VANCOUVER ----------
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. Stud. Neotrop. Fauna Environ. 2008;43(2):135-146.
http://dx.doi.org/10.1080/01650520701430553