Description of the immature stages of Stenocrates agricola Dechambre & Hardy (Coleoptera: Scarabaeidae: Dynastinae : Cyclocephalini) with redescription of the adult and discussion of its tribal position

The enigmatic genus Stenocrates Burmeister has 52 species that are widely distributed from Mexico to Argentina, but mainly in South America. In the present study, the larva of the third instar and pupa of Stenocrates agricola Dechambre & Hardy, 2004 are described and illustrated based on specime...

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Autores principales:	Ibarra Polesel, Mario Gabriel, Neita Moreno, Jhon, Ratcliffe, Brett C.
Formato:	Artículo
Lenguaje:	Inglés
Publicado:	Academia Brasileira de Ciencias 2021
Materias:	Larva Taxonomy Scarab beetle Pupa Morphology
Acceso en línea:	http://repositorio.unne.edu.ar/handle/123456789/28608
Aporte de:	RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste

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spelling	I48-R184-123456789-286082025-03-06T11:01:13Z Description of the immature stages of Stenocrates agricola Dechambre & Hardy (Coleoptera: Scarabaeidae: Dynastinae : Cyclocephalini) with redescription of the adult and discussion of its tribal position Ibarra Polesel, Mario Gabriel Neita Moreno, Jhon Ratcliffe, Brett C. Larva Taxonomy Scarab beetle Pupa Morphology The enigmatic genus Stenocrates Burmeister has 52 species that are widely distributed from Mexico to Argentina, but mainly in South America. In the present study, the larva of the third instar and pupa of Stenocrates agricola Dechambre & Hardy, 2004 are described and illustrated based on specimens from Argentina, this being the first description of immatures for the genus. The adult is also redescribed, significantly expanding the number of characters and providing information on the natural history of this species. In addition, 28 species of Cyclocephalini and 20 species of Pentodontini are morphologically compared, emphasizing the most useful larval characters used among these beetles. Stenocrates agricola shows frequent and common characters of Pentodontini species but scarce (and even absent) characters typical of Cyclocephalini species, including some considered diagnostic for this tribe. Accordingly we consider that the tribal position of Stenocrates remains controversial and more study is needed to clarify the tribal status of Stenocrates. We believe that larval morphology provides important information in systematics studies that can clarify tribal relationships within the Dynastinae. 2021-09-09T11:41:25Z 2021-09-09T11:41:25Z 2020-10-23 Artículo Ibarra Polesel MG, Neita-Moreno JC y Ratcliffe BC. 2020. Description of the immature stages of Stenocrates agricola Dechambre & Hardy (Coleoptera: Scarabaeidae: Dynastinae: Cyclocephalini) with redescription of the adult and discussion of its tribal position. Annals of the Brazilian Academy of Sciences, 92: 0001-3765. 0001-3765 http://repositorio.unne.edu.ar/handle/123456789/28608 eng Agencia Nacional de Promoción Científica y Técnica and Universidad Nacional del Nordeste, Argentina (PICTO-UNNE 11-0244) Secretaría General de Ciencia y Técnica, UNNE, Argentina (N° F005/2011) https://doi.org/10.1590/0001-3765202020190967 openAccess http://creativecommons.org/licenses/by-nc-sa/2.5/ar/ application/pdf application/pdf Academia Brasileira de Ciencias Annals of the Brazilian Academy of Sciences, (2020), 92(3), 26 p.
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	Larva Taxonomy Scarab beetle Pupa Morphology
spellingShingle	Larva Taxonomy Scarab beetle Pupa Morphology Ibarra Polesel, Mario Gabriel Neita Moreno, Jhon Ratcliffe, Brett C. Description of the immature stages of Stenocrates agricola Dechambre & Hardy (Coleoptera: Scarabaeidae: Dynastinae : Cyclocephalini) with redescription of the adult and discussion of its tribal position
topic_facet	Larva Taxonomy Scarab beetle Pupa Morphology
description	The enigmatic genus Stenocrates Burmeister has 52 species that are widely distributed from Mexico to Argentina, but mainly in South America. In the present study, the larva of the third instar and pupa of Stenocrates agricola Dechambre & Hardy, 2004 are described and illustrated based on specimens from Argentina, this being the first description of immatures for the genus. The adult is also redescribed, significantly expanding the number of characters and providing information on the natural history of this species. In addition, 28 species of Cyclocephalini and 20 species of Pentodontini are morphologically compared, emphasizing the most useful larval characters used among these beetles. Stenocrates agricola shows frequent and common characters of Pentodontini species but scarce (and even absent) characters typical of Cyclocephalini species, including some considered diagnostic for this tribe. Accordingly we consider that the tribal position of Stenocrates remains controversial and more study is needed to clarify the tribal status of Stenocrates. We believe that larval morphology provides important information in systematics studies that can clarify tribal relationships within the Dynastinae.
format	Artículo
author	Ibarra Polesel, Mario Gabriel Neita Moreno, Jhon Ratcliffe, Brett C.
author_facet	Ibarra Polesel, Mario Gabriel Neita Moreno, Jhon Ratcliffe, Brett C.
author_sort	Ibarra Polesel, Mario Gabriel
title	Description of the immature stages of Stenocrates agricola Dechambre & Hardy (Coleoptera: Scarabaeidae: Dynastinae : Cyclocephalini) with redescription of the adult and discussion of its tribal position
title_short	Description of the immature stages of Stenocrates agricola Dechambre & Hardy (Coleoptera: Scarabaeidae: Dynastinae : Cyclocephalini) with redescription of the adult and discussion of its tribal position
title_full	Description of the immature stages of Stenocrates agricola Dechambre & Hardy (Coleoptera: Scarabaeidae: Dynastinae : Cyclocephalini) with redescription of the adult and discussion of its tribal position
title_fullStr	Description of the immature stages of Stenocrates agricola Dechambre & Hardy (Coleoptera: Scarabaeidae: Dynastinae : Cyclocephalini) with redescription of the adult and discussion of its tribal position
title_full_unstemmed	Description of the immature stages of Stenocrates agricola Dechambre & Hardy (Coleoptera: Scarabaeidae: Dynastinae : Cyclocephalini) with redescription of the adult and discussion of its tribal position
title_sort	description of the immature stages of stenocrates agricola dechambre & hardy (coleoptera: scarabaeidae: dynastinae : cyclocephalini) with redescription of the adult and discussion of its tribal position
publisher	Academia Brasileira de Ciencias
publishDate	2021
url	http://repositorio.unne.edu.ar/handle/123456789/28608
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Description of the immature stages of Stenocrates agricola Dechambre & Hardy (Coleoptera: Scarabaeidae: Dynastinae : Cyclocephalini) with redescription of the adult and discussion of its tribal position

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