Larvae of Huxelhydrus syntheticus Sharp, 1882 (Coleoptera: Dytiscidae: Bidessini)

The three larval instars of Huxelhydrus syntheticus Sharp, 1882, the only species of the New Zealand endemic genus Huxelhydrus Sharp, 1882, are described and illustrated including detailed morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, last abdominal segment an...

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Autores principales: Michat, M.C., Alarie, Y., Hájek, J.
Formato: JOUR
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Acceso en línea:http://hdl.handle.net/20.500.12110/paper_11755326_v4524_n1_p121_Michat
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spelling todo:paper_11755326_v4524_n1_p121_Michat2023-10-03T16:08:28Z Larvae of Huxelhydrus syntheticus Sharp, 1882 (Coleoptera: Dytiscidae: Bidessini) Michat, M.C. Alarie, Y. Hájek, J. Australian region Bidessini Chaetotaxy Dytiscidae Huxelhydrus syntheticus Hydroporinae Larva Morphometry New Zealand animal beetle larva limb mandible New Zealand Animals Coleoptera Extremities Larva Mandible New Zealand The three larval instars of Huxelhydrus syntheticus Sharp, 1882, the only species of the New Zealand endemic genus Huxelhydrus Sharp, 1882, are described and illustrated including detailed morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, last abdominal segment and urogomphi. Larvae of this species are characterized by the absence of the primary pore ABc, shared with all other known Bidessini larvae and therefore representing a potential synapomorphy of the tribe. Third instars of Huxelhydrus can be separated from those of all other known Bidessini genera by the following combination of characters: larger size, mandibular pore MNa located in a clearly distal position with respect to pore MNb, and presence of secondary setae on dorsal surface of protarsus, on posteroventral surface of all tarsi, and on urogomphus. First instars, on their part, can be distinguished by the presence of: an occipital suture, the primary pore PAk, a ventroapical spinula on antennomere 3, and an anterotransverse carina on meso- and metathorax. Copyright © 2018 Magnolia Press. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11755326_v4524_n1_p121_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 Australian region
Bidessini
Chaetotaxy
Dytiscidae
Huxelhydrus syntheticus
Hydroporinae
Larva
Morphometry
New Zealand
animal
beetle
larva
limb
mandible
New Zealand
Animals
Coleoptera
Extremities
Larva
Mandible
New Zealand
spellingShingle Australian region
Bidessini
Chaetotaxy
Dytiscidae
Huxelhydrus syntheticus
Hydroporinae
Larva
Morphometry
New Zealand
animal
beetle
larva
limb
mandible
New Zealand
Animals
Coleoptera
Extremities
Larva
Mandible
New Zealand
Michat, M.C.
Alarie, Y.
Hájek, J.
Larvae of Huxelhydrus syntheticus Sharp, 1882 (Coleoptera: Dytiscidae: Bidessini)
topic_facet Australian region
Bidessini
Chaetotaxy
Dytiscidae
Huxelhydrus syntheticus
Hydroporinae
Larva
Morphometry
New Zealand
animal
beetle
larva
limb
mandible
New Zealand
Animals
Coleoptera
Extremities
Larva
Mandible
New Zealand
description The three larval instars of Huxelhydrus syntheticus Sharp, 1882, the only species of the New Zealand endemic genus Huxelhydrus Sharp, 1882, are described and illustrated including detailed morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, last abdominal segment and urogomphi. Larvae of this species are characterized by the absence of the primary pore ABc, shared with all other known Bidessini larvae and therefore representing a potential synapomorphy of the tribe. Third instars of Huxelhydrus can be separated from those of all other known Bidessini genera by the following combination of characters: larger size, mandibular pore MNa located in a clearly distal position with respect to pore MNb, and presence of secondary setae on dorsal surface of protarsus, on posteroventral surface of all tarsi, and on urogomphus. First instars, on their part, can be distinguished by the presence of: an occipital suture, the primary pore PAk, a ventroapical spinula on antennomere 3, and an anterotransverse carina on meso- and metathorax. Copyright © 2018 Magnolia Press.
format JOUR
author Michat, M.C.
Alarie, Y.
Hájek, J.
author_facet Michat, M.C.
Alarie, Y.
Hájek, J.
author_sort Michat, M.C.
title Larvae of Huxelhydrus syntheticus Sharp, 1882 (Coleoptera: Dytiscidae: Bidessini)
title_short Larvae of Huxelhydrus syntheticus Sharp, 1882 (Coleoptera: Dytiscidae: Bidessini)
title_full Larvae of Huxelhydrus syntheticus Sharp, 1882 (Coleoptera: Dytiscidae: Bidessini)
title_fullStr Larvae of Huxelhydrus syntheticus Sharp, 1882 (Coleoptera: Dytiscidae: Bidessini)
title_full_unstemmed Larvae of Huxelhydrus syntheticus Sharp, 1882 (Coleoptera: Dytiscidae: Bidessini)
title_sort larvae of huxelhydrus syntheticus sharp, 1882 (coleoptera: dytiscidae: bidessini)
url http://hdl.handle.net/20.500.12110/paper_11755326_v4524_n1_p121_Michat
work_keys_str_mv AT michatmc larvaeofhuxelhydrussyntheticussharp1882coleopteradytiscidaebidessini
AT alariey larvaeofhuxelhydrussyntheticussharp1882coleopteradytiscidaebidessini
AT hajekj larvaeofhuxelhydrussyntheticussharp1882coleopteradytiscidaebidessini
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