Description of the nymphs of Ectemnostega (Ectemnostegella) stridulata (Hungerford 1948) (Hemiptera: Heteroptera: Corixidae)

The egg and the five nymphal instars of Ectemnostega (Ectemnostegella) stridulata are described and illustrated for the first time, with emphasis on the morphometry and chaetotaxy of selected structures. Comparison with the eggs of E. (Ectemnostegella) montana and E. (Ectemnostegella) peruana, and t...

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Autores principales: Konopko, Susana Amanda, Mazzucconi, Silvia Ana, Bachmann, Axel O.
Publicado: 2010
Materias:
Chaetotaxy
Corixinae
Immature stages
Morphometry
Neotropical Region
Nepomorpha
Taxonomy
Corixidae
Ectemnostega montana
Ectemnostega stridulata
Hemiptera
Heteroptera
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11755326_v_n2639_p19_Konopko
http://hdl.handle.net/20.500.12110/paper_11755326_v_n2639_p19_Konopko
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_11755326_v_n2639_p19_Konopko
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spelling paper:paper_11755326_v_n2639_p19_Konopko2023-06-08T16:09:48Z Description of the nymphs of Ectemnostega (Ectemnostegella) stridulata (Hungerford 1948) (Hemiptera: Heteroptera: Corixidae) Konopko, Susana Amanda Mazzucconi, Silvia Ana Bachmann, Axel O. Chaetotaxy Corixinae Immature stages Morphometry Neotropical Region Nepomorpha Taxonomy Corixidae Corixinae Ectemnostega montana Ectemnostega stridulata Hemiptera Heteroptera Nepomorpha The egg and the five nymphal instars of Ectemnostega (Ectemnostegella) stridulata are described and illustrated for the first time, with emphasis on the morphometry and chaetotaxy of selected structures. Comparison with the eggs of E. (Ectemnostegella) montana and E. (Ectemnostegella) peruana, and the nymphs of E. montana and E. (Ectemnostega) quadrata, are included. The egg of E. stridulata has a very short stalk like those of E. montana and E. peruana, and the three species differ in the chorionic structure. The nymphs of Ectemnostega share the presence of one dorsal abdominal scent gland on each of the segments IV-V. The number of spines on the profemur on the ventral and posteroventral surfaces distinguishes the nymphs of the subgenus Ectemnostega from the those of the subgenus Ectemnostegella. The nymphal characters most useful in identifying instars I-V of Ectemnostega are: the body length, the number of spines on the posteroventral surface of the mesofemur, setae on the posterodorsal surface and spines on the posteroventral surface of the mesotibia, setae on the posterodorsal surface of the mesotarsus, and the grade of development of the wing pads. The nymphal characters most useful in identifying species of Ectemnostega are: the number of spines on the posteroventral surface of the mesofemur, spines on the anterodorsal surface of the metatibia, and spines and swimming hairs on the anteroventral and posterodorsal surfaces of the metatarsus. © 2010 Magnolia Press. Fil:Konopko, S.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mazzucconi, S.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bachmann, A.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11755326_v_n2639_p19_Konopko http://hdl.handle.net/20.500.12110/paper_11755326_v_n2639_p19_Konopko
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
Corixinae
Immature stages
Morphometry
Neotropical Region
Nepomorpha
Taxonomy
Corixidae
Corixinae
Ectemnostega montana
Ectemnostega stridulata
Hemiptera
Heteroptera
Nepomorpha
spellingShingle Chaetotaxy
Corixinae
Immature stages
Morphometry
Neotropical Region
Nepomorpha
Taxonomy
Corixidae
Corixinae
Ectemnostega montana
Ectemnostega stridulata
Hemiptera
Heteroptera
Nepomorpha
Konopko, Susana Amanda
Mazzucconi, Silvia Ana
Bachmann, Axel O.
Description of the nymphs of Ectemnostega (Ectemnostegella) stridulata (Hungerford 1948) (Hemiptera: Heteroptera: Corixidae)
topic_facet Chaetotaxy
Corixinae
Immature stages
Morphometry
Neotropical Region
Nepomorpha
Taxonomy
Corixidae
Corixinae
Ectemnostega montana
Ectemnostega stridulata
Hemiptera
Heteroptera
Nepomorpha
description The egg and the five nymphal instars of Ectemnostega (Ectemnostegella) stridulata are described and illustrated for the first time, with emphasis on the morphometry and chaetotaxy of selected structures. Comparison with the eggs of E. (Ectemnostegella) montana and E. (Ectemnostegella) peruana, and the nymphs of E. montana and E. (Ectemnostega) quadrata, are included. The egg of E. stridulata has a very short stalk like those of E. montana and E. peruana, and the three species differ in the chorionic structure. The nymphs of Ectemnostega share the presence of one dorsal abdominal scent gland on each of the segments IV-V. The number of spines on the profemur on the ventral and posteroventral surfaces distinguishes the nymphs of the subgenus Ectemnostega from the those of the subgenus Ectemnostegella. The nymphal characters most useful in identifying instars I-V of Ectemnostega are: the body length, the number of spines on the posteroventral surface of the mesofemur, setae on the posterodorsal surface and spines on the posteroventral surface of the mesotibia, setae on the posterodorsal surface of the mesotarsus, and the grade of development of the wing pads. The nymphal characters most useful in identifying species of Ectemnostega are: the number of spines on the posteroventral surface of the mesofemur, spines on the anterodorsal surface of the metatibia, and spines and swimming hairs on the anteroventral and posterodorsal surfaces of the metatarsus. © 2010 Magnolia Press.
author Konopko, Susana Amanda
Mazzucconi, Silvia Ana
Bachmann, Axel O.
author_facet Konopko, Susana Amanda
Mazzucconi, Silvia Ana
Bachmann, Axel O.
author_sort Konopko, Susana Amanda
title Description of the nymphs of Ectemnostega (Ectemnostegella) stridulata (Hungerford 1948) (Hemiptera: Heteroptera: Corixidae)
title_short Description of the nymphs of Ectemnostega (Ectemnostegella) stridulata (Hungerford 1948) (Hemiptera: Heteroptera: Corixidae)
title_full Description of the nymphs of Ectemnostega (Ectemnostegella) stridulata (Hungerford 1948) (Hemiptera: Heteroptera: Corixidae)
title_fullStr Description of the nymphs of Ectemnostega (Ectemnostegella) stridulata (Hungerford 1948) (Hemiptera: Heteroptera: Corixidae)
title_full_unstemmed Description of the nymphs of Ectemnostega (Ectemnostegella) stridulata (Hungerford 1948) (Hemiptera: Heteroptera: Corixidae)
title_sort description of the nymphs of ectemnostega (ectemnostegella) stridulata (hungerford 1948) (hemiptera: heteroptera: corixidae)
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11755326_v_n2639_p19_Konopko
http://hdl.handle.net/20.500.12110/paper_11755326_v_n2639_p19_Konopko
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AT mazzucconisilviaana descriptionofthenymphsofectemnostegaectemnostegellastridulatahungerford1948hemipteraheteropteracorixidae
AT bachmannaxelo descriptionofthenymphsofectemnostegaectemnostegellastridulatahungerford1948hemipteraheteropteracorixidae
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