Description of immatures of Berosus decolor Knisch, 1924 (Coleoptera: Hydrophilidae: Berosini), with emphasis on chaetotaxy and morphometry

The preimaginal stages of Berosus decolor Knisch, 1924 are described for the first time, including illustrations of the egg case and all larval instars. Larval morphology of this species is studied emphasizing chaetotaxic and morphometric analyses. The egg case lacks a mast and contains 2-3 eggs; al...

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Detalles Bibliográficos
Autor principal: Torres, Patricia Laura María
Publicado: 2015
Materias:
Berosini
Egg case
Larvae
Sensilla
Water scavenger beetles
Berosus
Coleoptera
Hydrophilidae
anatomy and histology
animal
animal dispersal
animal structures
beetle
body size
classification
ecosystem
growth, development and aging
larva
male
organ size
ovum
Animal Distribution
Animal Structures
Animals
Beetles
Body Size
Ecosystem
Larva
Male
Organ Size
Ovum
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11755326_v3981_n4_p577_Rodriguez
http://hdl.handle.net/20.500.12110/paper_11755326_v3981_n4_p577_Rodriguez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_11755326_v3981_n4_p577_Rodriguez
record_format dspace
spelling paper:paper_11755326_v3981_n4_p577_Rodriguez2023-06-08T16:09:31Z Description of immatures of Berosus decolor Knisch, 1924 (Coleoptera: Hydrophilidae: Berosini), with emphasis on chaetotaxy and morphometry Torres, Patricia Laura María Berosini Egg case Larvae Sensilla Water scavenger beetles Berosus Coleoptera Hydrophilidae anatomy and histology animal animal dispersal animal structures beetle body size classification ecosystem growth, development and aging larva male organ size ovum Animal Distribution Animal Structures Animals Beetles Body Size Ecosystem Larva Male Organ Size Ovum The preimaginal stages of Berosus decolor Knisch, 1924 are described for the first time, including illustrations of the egg case and all larval instars. Larval morphology of this species is studied emphasizing chaetotaxic and morphometric analyses. The egg case lacks a mast and contains 2-3 eggs; all larval instars are characterized by the following features: presence of 6 teeth on anterior margin of nasale; left epistomal lobe carrying 14-16 strong and curved setae (gFR2); seta FR1 elongate, inserted posteriorly to seta PA7; pore FR14 absent; parietale with spinulae in the area between setae PA5 and PA12; mandibles asymmetrical; seta MN1 minute; first antenommere with a digitiform projection on distal inner margin; antennal sensilla AN8 and AN9 absent; maxillary sensilla MX10 hair-like, MX11 and MX16 with an intermediate shape between hair-like and spine-like; labial sensilla LA4 and LA15 absent; seta LA2 present, minute; abdomen with 7 pairs of tracheal gills. The morphology of the egg cases and larvae within the genus Berosus are compared and discussed. Copyright © 2015 Magnolia Press. Fil:Torres, P.L.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11755326_v3981_n4_p577_Rodriguez http://hdl.handle.net/20.500.12110/paper_11755326_v3981_n4_p577_Rodriguez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Berosini
Egg case
Larvae
Sensilla
Water scavenger beetles
Berosus
Coleoptera
Hydrophilidae
anatomy and histology
animal
animal dispersal
animal structures
beetle
body size
classification
ecosystem
growth, development and aging
larva
male
organ size
ovum
Animal Distribution
Animal Structures
Animals
Beetles
Body Size
Ecosystem
Larva
Male
Organ Size
Ovum
spellingShingle Berosini
Egg case
Larvae
Sensilla
Water scavenger beetles
Berosus
Coleoptera
Hydrophilidae
anatomy and histology
animal
animal dispersal
animal structures
beetle
body size
classification
ecosystem
growth, development and aging
larva
male
organ size
ovum
Animal Distribution
Animal Structures
Animals
Beetles
Body Size
Ecosystem
Larva
Male
Organ Size
Ovum
Torres, Patricia Laura María
Description of immatures of Berosus decolor Knisch, 1924 (Coleoptera: Hydrophilidae: Berosini), with emphasis on chaetotaxy and morphometry
topic_facet Berosini
Egg case
Larvae
Sensilla
Water scavenger beetles
Berosus
Coleoptera
Hydrophilidae
anatomy and histology
animal
animal dispersal
animal structures
beetle
body size
classification
ecosystem
growth, development and aging
larva
male
organ size
ovum
Animal Distribution
Animal Structures
Animals
Beetles
Body Size
Ecosystem
Larva
Male
Organ Size
Ovum
description The preimaginal stages of Berosus decolor Knisch, 1924 are described for the first time, including illustrations of the egg case and all larval instars. Larval morphology of this species is studied emphasizing chaetotaxic and morphometric analyses. The egg case lacks a mast and contains 2-3 eggs; all larval instars are characterized by the following features: presence of 6 teeth on anterior margin of nasale; left epistomal lobe carrying 14-16 strong and curved setae (gFR2); seta FR1 elongate, inserted posteriorly to seta PA7; pore FR14 absent; parietale with spinulae in the area between setae PA5 and PA12; mandibles asymmetrical; seta MN1 minute; first antenommere with a digitiform projection on distal inner margin; antennal sensilla AN8 and AN9 absent; maxillary sensilla MX10 hair-like, MX11 and MX16 with an intermediate shape between hair-like and spine-like; labial sensilla LA4 and LA15 absent; seta LA2 present, minute; abdomen with 7 pairs of tracheal gills. The morphology of the egg cases and larvae within the genus Berosus are compared and discussed. Copyright © 2015 Magnolia Press.
author Torres, Patricia Laura María
author_facet Torres, Patricia Laura María
author_sort Torres, Patricia Laura María
title Description of immatures of Berosus decolor Knisch, 1924 (Coleoptera: Hydrophilidae: Berosini), with emphasis on chaetotaxy and morphometry
title_short Description of immatures of Berosus decolor Knisch, 1924 (Coleoptera: Hydrophilidae: Berosini), with emphasis on chaetotaxy and morphometry
title_full Description of immatures of Berosus decolor Knisch, 1924 (Coleoptera: Hydrophilidae: Berosini), with emphasis on chaetotaxy and morphometry
title_fullStr Description of immatures of Berosus decolor Knisch, 1924 (Coleoptera: Hydrophilidae: Berosini), with emphasis on chaetotaxy and morphometry
title_full_unstemmed Description of immatures of Berosus decolor Knisch, 1924 (Coleoptera: Hydrophilidae: Berosini), with emphasis on chaetotaxy and morphometry
title_sort description of immatures of berosus decolor knisch, 1924 (coleoptera: hydrophilidae: berosini), with emphasis on chaetotaxy and morphometry
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11755326_v3981_n4_p577_Rodriguez
http://hdl.handle.net/20.500.12110/paper_11755326_v3981_n4_p577_Rodriguez
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