Onthophagus pilauco sp. nov. (Coleoptera, Scarabaeidae) : evidence of beetle extinction in the Pleistocene- Holocene transition in Chilean Northern Patagonia

Show full item record



Permalink

http://hdl.handle.net/10138/332675

Citation

Tello , F , Verdu , J R , Rossini , M & Zunino , M 2021 , ' Onthophagus pilauco sp. nov. (Coleoptera, Scarabaeidae) : evidence of beetle extinction in the Pleistocene- Holocene transition in Chilean Northern Patagonia ' , ZooKeys , no. 1043 , pp. 133-145 . https://doi.org/10.3897/zookeys.1043.61706

Title: Onthophagus pilauco sp. nov. (Coleoptera, Scarabaeidae) : evidence of beetle extinction in the Pleistocene- Holocene transition in Chilean Northern Patagonia
Author: Tello, Francisco; Verdu, Jose R.; Rossini, Michele; Zunino, Mario
Contributor: University of Helsinki, Zoology
Date: 2021-06-15
Language: eng
Number of pages: 13
Belongs to series: ZooKeys
ISSN: 1313-2989
URI: http://hdl.handle.net/10138/332675
Abstract: The South American Pleistocene-Holocene transition has been characterized by drastic climatic and diversity changes. These rapid changes induced one of the largest and most recent extinctions in the megafauna at the continental scale. However, examples of the extinction of small animals (e.g., insects) are scarce, and the underlying causes of the extinction have been little studied. In this work, a new extinct dung beetle species is described from a late Pleistocene sequence (similar to 15.2 k cal yr BP) at the paleoarcheological site Pilauco, Chilean Northern Patagonia. Based on morphological characters, this fossil is considered to belong to the genus Onthophagus Latreille, 1802 and named Onthophagus pilauco sp. nov. We carried out a comprehensive revision of related groups, and we analyzed the possible mechanism of diversification and extinction of this new species. We hypothesize that Onthophagus pilauco sp. nov. diversified as a member of the osculatii species-complex following migration processes related to the Great American Biotic Interchange (similar to 3 Ma). The extinction of O. pilauco sp. nov. may be related to massive defaunation and climatic changes recorded in the Plesitocene-Holocene transition (12.8 k cal yr BP). This finding is the first record of this genus in Chile, and provides new evidence to support the collateral-extinction hypothesis related to the defaunation.
Subject: Dung beetle
extinction
fossil beetles
new species
Pleistocene
South America
TAXONOMIC REVISION
FOSSIL BEETLES
SOUTH
IMPACT
COPRINISPHAERA
LATREILLE
GENUS
1181 Ecology, evolutionary biology
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
ZK_article_61706_en_1.pdf 3.186Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record