A description of the first instar of hoperius planatus fall, 1927 (Coleoptera: Dytiscidae: Colymbetinae: Colymbetini), with phylogenetic implications

The first instar of Hoperius planatus Fall, 1927 is described and illustrated for the first time with an emphasis on the chaetotaxy of the head capsule, head appendages, legs, last abdominal segment, and urogomphi. Hoperius planatus is characterized by the presence of additional campaniform sensilla...

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Autores principales: Barman, E.H., Michat, M.C., Alarie, Y., Wolfe, G.W.
Formato: JOUR
Materias:
Chaetotaxy
Hoperius
Larvae
Mandibular geometry
Morphology
Predaceous diving beetle
beetle
biological characteristics
cladistics
developmental stage
morphology
phylogeny
relatedness
taxonomy
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0010065X_v68_n2_p321_Barman
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_0010065X_v68_n2_p321_Barman
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spelling todo:paper_0010065X_v68_n2_p321_Barman2023-10-03T14:08:57Z A description of the first instar of hoperius planatus fall, 1927 (Coleoptera: Dytiscidae: Colymbetinae: Colymbetini), with phylogenetic implications Barman, E.H. Michat, M.C. Alarie, Y. Wolfe, G.W. Chaetotaxy Hoperius Larvae Mandibular geometry Morphology Predaceous diving beetle beetle biological characteristics cladistics developmental stage morphology phylogeny relatedness taxonomy The first instar of Hoperius planatus Fall, 1927 is described and illustrated for the first time with an emphasis on the chaetotaxy of the head capsule, head appendages, legs, last abdominal segment, and urogomphi. Hoperius planatus is characterized by the presence of additional campaniform sensilla (pores) on the frontoclypeus, representing a unique character state within the tribe Colymbetini (Colymbetinae). A phylogenetic analysis based on 42 first-instar characters using the program TNT reinforces the hypothesis of monophyletic origin of the Colymbetini and suggests a placement of Hoperius Fall, 1927 as sister to a clade comprised of Neoscutopterus J. Balfour-Browne, 1943, Meladema Laporte, 1835, and Bunites Spangler, 1972. Members of this clade are uniquely characterized within the Colymbetini by the presence of a large number of additional spiniform sensilla on the urogomphus. Fil:Michat, M.C. 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_0010065X_v68_n2_p321_Barman
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
Hoperius
Larvae
Mandibular geometry
Morphology
Predaceous diving beetle
beetle
biological characteristics
cladistics
developmental stage
morphology
phylogeny
relatedness
taxonomy
spellingShingle Chaetotaxy
Hoperius
Larvae
Mandibular geometry
Morphology
Predaceous diving beetle
beetle
biological characteristics
cladistics
developmental stage
morphology
phylogeny
relatedness
taxonomy
Barman, E.H.
Michat, M.C.
Alarie, Y.
Wolfe, G.W.
A description of the first instar of hoperius planatus fall, 1927 (Coleoptera: Dytiscidae: Colymbetinae: Colymbetini), with phylogenetic implications
topic_facet Chaetotaxy
Hoperius
Larvae
Mandibular geometry
Morphology
Predaceous diving beetle
beetle
biological characteristics
cladistics
developmental stage
morphology
phylogeny
relatedness
taxonomy
description The first instar of Hoperius planatus Fall, 1927 is described and illustrated for the first time with an emphasis on the chaetotaxy of the head capsule, head appendages, legs, last abdominal segment, and urogomphi. Hoperius planatus is characterized by the presence of additional campaniform sensilla (pores) on the frontoclypeus, representing a unique character state within the tribe Colymbetini (Colymbetinae). A phylogenetic analysis based on 42 first-instar characters using the program TNT reinforces the hypothesis of monophyletic origin of the Colymbetini and suggests a placement of Hoperius Fall, 1927 as sister to a clade comprised of Neoscutopterus J. Balfour-Browne, 1943, Meladema Laporte, 1835, and Bunites Spangler, 1972. Members of this clade are uniquely characterized within the Colymbetini by the presence of a large number of additional spiniform sensilla on the urogomphus.
format JOUR
author Barman, E.H.
Michat, M.C.
Alarie, Y.
Wolfe, G.W.
author_facet Barman, E.H.
Michat, M.C.
Alarie, Y.
Wolfe, G.W.
author_sort Barman, E.H.
title A description of the first instar of hoperius planatus fall, 1927 (Coleoptera: Dytiscidae: Colymbetinae: Colymbetini), with phylogenetic implications
title_short A description of the first instar of hoperius planatus fall, 1927 (Coleoptera: Dytiscidae: Colymbetinae: Colymbetini), with phylogenetic implications
title_full A description of the first instar of hoperius planatus fall, 1927 (Coleoptera: Dytiscidae: Colymbetinae: Colymbetini), with phylogenetic implications
title_fullStr A description of the first instar of hoperius planatus fall, 1927 (Coleoptera: Dytiscidae: Colymbetinae: Colymbetini), with phylogenetic implications
title_full_unstemmed A description of the first instar of hoperius planatus fall, 1927 (Coleoptera: Dytiscidae: Colymbetinae: Colymbetini), with phylogenetic implications
title_sort description of the first instar of hoperius planatus fall, 1927 (coleoptera: dytiscidae: colymbetinae: colymbetini), with phylogenetic implications
url http://hdl.handle.net/20.500.12110/paper_0010065X_v68_n2_p321_Barman
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