Scytinopterid (insecta: Hemiptera) richness during the late triassic in south-western Gondwana (Argentina)

The Triassic Period was a heyday for scytinopterids, which were represented by diverse and disparate taxa. Their small size, the selection of shore plants as a resource for living, and a non-specialized diet allowed them crossing the Permian-Triassic limit and retaining the dominance and diversi...

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Detalles Bibliográficos
Autores principales: Lara, María Belén, Cariglino, Bárbara, Zavattieri, Ana María
Formato: Reunión
Lenguaje:Inglés
Publicado: Asociación Paleontológica Argentina 2024
Materias:
Escitinoptéridos
Triásico tardío
Argentina
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/54540
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-54540
record_format dspace
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Escitinoptéridos
Triásico tardío
Argentina
spellingShingle Escitinoptéridos
Triásico tardío
Argentina
Lara, María Belén
Cariglino, Bárbara
Zavattieri, Ana María
Scytinopterid (insecta: Hemiptera) richness during the late triassic in south-western Gondwana (Argentina)
topic_facet Escitinoptéridos
Triásico tardío
Argentina
description The Triassic Period was a heyday for scytinopterids, which were represented by diverse and disparate taxa. Their small size, the selection of shore plants as a resource for living, and a non-specialized diet allowed them crossing the Permian-Triassic limit and retaining the dominance and diversity through the Late Triassic. The Family Scytinopteridae ecologically characterized Triassic biotas alongside with Progonocimicidae, Dunstaniidae, Hylicellidae, Dysmorphoptilidae, and other derived scytinopteroid families. Contrary to the Permian, where most fossil information is based on discoveries from the Northern Hemisphere (e.g., Russia, France), during the Middle-Late Triassic, records of Scytinopteridae come mainly from Argentina and Australia, and in less proportion, Russia, Kyrgyzstan, and China. However, despite the large number of specimens collected worldwide, both Superfamily Scytinopteroidea and Family Scytinopteridae are groups in need of a complete revision and phylogenetic analysis. Recently, abundant and well-preserved scytinopterids (~200 specimens) were collected from the uppermost part of the Potrerillos Formation (Carnian) at the Quebrada del Durazno locality, south of the Cerro Cacheuta, Cuyana Basin, Mendoza Province (Argentina). The scytinopterids, and hence the Hemiptera order, is the dominant group at the locality, but sometimes they are over-represented in oryctocoenoses (taphonomic bias and/or habitat type). Other insect groups recorded at the locality include mecopterans, dipterans, odonatans, orthopterans, grylloblattids, beetles, and miomopterans. The scytinopterids collected mainly comprise sclerotized forewings (tegmina), disarticulated (without clavus), preserved as compressions and impressions. Preliminary taxonomic analysis observed between the Argentinian and Australian taxa (e.g., venational pattern, size, ornamentations on forewing) suggest these two hemipteran faunas potentially represent distinct subfamilies. Additionally, we observed that the Argentinian scytinopterids were distinctly bigger (~19-28 mm) than the Australian ones (~5-11 mm), probably as a consequence of the different paleoclimatic conditions. The scytinopterids had an amphibiotic lifestyle; at the Quebrada del Durazno locality, the insects lived on waterside vegetation (e.g., sphenophytes) growing in the delta plain under temperate-warm and humid conditions by maximal development of the megamonsoon during the early Late Triassic. Likewise modern hemipterans, the scytinopterids were phytophagous (with piercing-and-sucking habits) and probably fed on the various seed plants, abundantly represented at the Quebrada del Durazno locality. The Scytinopteridae richness recorded at the Potrerillos Formation indicates that the family was a key component in Late Triassic land ecosystems, and acted as primary consumers after the P/T mass extinction in entomological communities.
format Reunión
author Lara, María Belén
Cariglino, Bárbara
Zavattieri, Ana María
author_facet Lara, María Belén
Cariglino, Bárbara
Zavattieri, Ana María
author_sort Lara, María Belén
title Scytinopterid (insecta: Hemiptera) richness during the late triassic in south-western Gondwana (Argentina)
title_short Scytinopterid (insecta: Hemiptera) richness during the late triassic in south-western Gondwana (Argentina)
title_full Scytinopterid (insecta: Hemiptera) richness during the late triassic in south-western Gondwana (Argentina)
title_fullStr Scytinopterid (insecta: Hemiptera) richness during the late triassic in south-western Gondwana (Argentina)
title_full_unstemmed Scytinopterid (insecta: Hemiptera) richness during the late triassic in south-western Gondwana (Argentina)
title_sort scytinopterid (insecta: hemiptera) richness during the late triassic in south-western gondwana (argentina)
publisher Asociación Paleontológica Argentina
publishDate 2024
url http://repositorio.unne.edu.ar/handle/123456789/54540
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AT cariglinobarbara scytinopteridinsectahemipterarichnessduringthelatetriassicinsouthwesterngondwanaargentina
AT zavattierianamaria scytinopteridinsectahemipterarichnessduringthelatetriassicinsouthwesterngondwanaargentina
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spelling I48-R184-123456789-545402025-03-06T11:28:38Z Scytinopterid (insecta: Hemiptera) richness during the late triassic in south-western Gondwana (Argentina) Lara, María Belén Cariglino, Bárbara Zavattieri, Ana María Escitinoptéridos Triásico tardío Argentina The Triassic Period was a heyday for scytinopterids, which were represented by diverse and disparate taxa. Their small size, the selection of shore plants as a resource for living, and a non-specialized diet allowed them crossing the Permian-Triassic limit and retaining the dominance and diversity through the Late Triassic. The Family Scytinopteridae ecologically characterized Triassic biotas alongside with Progonocimicidae, Dunstaniidae, Hylicellidae, Dysmorphoptilidae, and other derived scytinopteroid families. Contrary to the Permian, where most fossil information is based on discoveries from the Northern Hemisphere (e.g., Russia, France), during the Middle-Late Triassic, records of Scytinopteridae come mainly from Argentina and Australia, and in less proportion, Russia, Kyrgyzstan, and China. However, despite the large number of specimens collected worldwide, both Superfamily Scytinopteroidea and Family Scytinopteridae are groups in need of a complete revision and phylogenetic analysis. Recently, abundant and well-preserved scytinopterids (~200 specimens) were collected from the uppermost part of the Potrerillos Formation (Carnian) at the Quebrada del Durazno locality, south of the Cerro Cacheuta, Cuyana Basin, Mendoza Province (Argentina). The scytinopterids, and hence the Hemiptera order, is the dominant group at the locality, but sometimes they are over-represented in oryctocoenoses (taphonomic bias and/or habitat type). Other insect groups recorded at the locality include mecopterans, dipterans, odonatans, orthopterans, grylloblattids, beetles, and miomopterans. The scytinopterids collected mainly comprise sclerotized forewings (tegmina), disarticulated (without clavus), preserved as compressions and impressions. Preliminary taxonomic analysis observed between the Argentinian and Australian taxa (e.g., venational pattern, size, ornamentations on forewing) suggest these two hemipteran faunas potentially represent distinct subfamilies. Additionally, we observed that the Argentinian scytinopterids were distinctly bigger (~19-28 mm) than the Australian ones (~5-11 mm), probably as a consequence of the different paleoclimatic conditions. The scytinopterids had an amphibiotic lifestyle; at the Quebrada del Durazno locality, the insects lived on waterside vegetation (e.g., sphenophytes) growing in the delta plain under temperate-warm and humid conditions by maximal development of the megamonsoon during the early Late Triassic. Likewise modern hemipterans, the scytinopterids were phytophagous (with piercing-and-sucking habits) and probably fed on the various seed plants, abundantly represented at the Quebrada del Durazno locality. The Scytinopteridae richness recorded at the Potrerillos Formation indicates that the family was a key component in Late Triassic land ecosystems, and acted as primary consumers after the P/T mass extinction in entomological communities. 2024-07-19T21:41:24Z 2024-07-19T21:41:24Z 2022-11 Reunión Lara, María Belén, Cariglino, Bárbara y Zavattieri, Ana María, 2022. Scytinopterid (insecta: Hemiptera) richness during the late triassic in south-western Gondwana (Argentina). En: Reunión de Comunicaciones de la Asociación Paleontológica Argentina. Salta: Asociación Paleontológica Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Bio y Geociencias del NOA; Universidad Nacional de Salta. Instituto para el Estudio de la Biodiversidad de Invertebrados, p. 87-87. 2469-0228 http://repositorio.unne.edu.ar/handle/123456789/54540 eng openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 87-87 application/pdf Asociación Paleontológica Argentina Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Bio y Geociencias del NOA Universidad Nacional de Salta. Instituto para el Estudio de la Biodiversidad de Invertebrados

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