Larval morphology and chaetotaxy of Macrogyrus oblongus (Boisduval, 1835) (Coleoptera: Gyrinidae)

ABSTRACT: The larvae of the grooved whirligig beetle Macrogyrus oblongus (Boisduval, 1835) are described and illustrated including detailed morphometric and chaetotaxic analyses of selected structures. Larvae of Macrogyrus Régimbart, 1882 exhibit the characters traditionally recognised as autapomorp...

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Autor principal:	Michat, Mariano C.
Publicado:	2016
Materias:	Adephaga Australia Coleoptera Gyrinidae larva morphometry sensilla whirligig beetles
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01650424_v37_n2_p87_Michat http://hdl.handle.net/20.500.12110/paper_01650424_v37_n2_p87_Michat
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01650424_v37_n2_p87_Michat
record_format	dspace
spelling	paper:paper_01650424_v37_n2_p87_Michat2023-06-08T15:14:44Z Larval morphology and chaetotaxy of Macrogyrus oblongus (Boisduval, 1835) (Coleoptera: Gyrinidae) Michat, Mariano C. Adephaga Australia Coleoptera Gyrinidae larva morphometry sensilla whirligig beetles ABSTRACT: The larvae of the grooved whirligig beetle Macrogyrus oblongus (Boisduval, 1835) are described and illustrated including detailed morphometric and chaetotaxic analyses of selected structures. Larvae of Macrogyrus Régimbart, 1882 exhibit the characters traditionally recognised as autapomorphies of the Gyrinidae. The first instars bear egg bursters on the parietal, a potential additional autapomorphy. Putative larval autapomorphies of the tribe Dineutini are the presence of additional setae on the mandible, the absence of the seta TR2, and the presence of pore-like additional structures on the ultimate palpomeres. Macrogyrus larvae differ from those of the other known dineutine genera (Andogyrus Ochs, 1924 and Dineutus MacLeay, 1825) in the absence of a neck constriction and in the distal position of the pore LAc. Other useful characters to distinguish genera within Dineutini are the presence or absence of additional setae on the cardo and coxa, and the posterior margin of the lacinia dentate or smooth. © 2016 Informa UK Limited, trading as Taylor & Francis Group. Fil:Michat, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01650424_v37_n2_p87_Michat http://hdl.handle.net/20.500.12110/paper_01650424_v37_n2_p87_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	Adephaga Australia Coleoptera Gyrinidae larva morphometry sensilla whirligig beetles
spellingShingle	Adephaga Australia Coleoptera Gyrinidae larva morphometry sensilla whirligig beetles Michat, Mariano C. Larval morphology and chaetotaxy of Macrogyrus oblongus (Boisduval, 1835) (Coleoptera: Gyrinidae)
topic_facet	Adephaga Australia Coleoptera Gyrinidae larva morphometry sensilla whirligig beetles
description	ABSTRACT: The larvae of the grooved whirligig beetle Macrogyrus oblongus (Boisduval, 1835) are described and illustrated including detailed morphometric and chaetotaxic analyses of selected structures. Larvae of Macrogyrus Régimbart, 1882 exhibit the characters traditionally recognised as autapomorphies of the Gyrinidae. The first instars bear egg bursters on the parietal, a potential additional autapomorphy. Putative larval autapomorphies of the tribe Dineutini are the presence of additional setae on the mandible, the absence of the seta TR2, and the presence of pore-like additional structures on the ultimate palpomeres. Macrogyrus larvae differ from those of the other known dineutine genera (Andogyrus Ochs, 1924 and Dineutus MacLeay, 1825) in the absence of a neck constriction and in the distal position of the pore LAc. Other useful characters to distinguish genera within Dineutini are the presence or absence of additional setae on the cardo and coxa, and the posterior margin of the lacinia dentate or smooth. © 2016 Informa UK Limited, trading as Taylor & Francis Group.
author	Michat, Mariano C.
author_facet	Michat, Mariano C.
author_sort	Michat, Mariano C.
title	Larval morphology and chaetotaxy of Macrogyrus oblongus (Boisduval, 1835) (Coleoptera: Gyrinidae)
title_short	Larval morphology and chaetotaxy of Macrogyrus oblongus (Boisduval, 1835) (Coleoptera: Gyrinidae)
title_full	Larval morphology and chaetotaxy of Macrogyrus oblongus (Boisduval, 1835) (Coleoptera: Gyrinidae)
title_fullStr	Larval morphology and chaetotaxy of Macrogyrus oblongus (Boisduval, 1835) (Coleoptera: Gyrinidae)
title_full_unstemmed	Larval morphology and chaetotaxy of Macrogyrus oblongus (Boisduval, 1835) (Coleoptera: Gyrinidae)
title_sort	larval morphology and chaetotaxy of macrogyrus oblongus (boisduval, 1835) (coleoptera: gyrinidae)
publishDate	2016
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01650424_v37_n2_p87_Michat http://hdl.handle.net/20.500.12110/paper_01650424_v37_n2_p87_Michat
work_keys_str_mv	AT michatmarianoc larvalmorphologyandchaetotaxyofmacrogyrusoblongusboisduval1835coleopteragyrinidae
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Larval morphology and chaetotaxy of Macrogyrus oblongus (Boisduval, 1835) (Coleoptera: Gyrinidae)

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