New mid-Cretaceous cryptic slime mold beetles and the early evolution of Sphindidae (Coleoptera: Cucujoidea)

Abstract The cryptic slime mold beetles, Sphindidae, are a moderately diverse cucujoid beetle family, whose members are obligately tied to slime molds throughout their life. The fossil record of sphindid beetles is sparse; stem-sphindids and crown-group members of uncertain systematic...

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Autores principales:	Yan-Da Li, Erik Tihelka, Zhen-Hua Liu, Di-Ying Huang, Chen‑Yang Cai
Formato:	article
Lenguaje:	EN
Publicado:	Senckenberg Gesellschaft für Naturforschung 2021
Materias:	Science Q
Acceso en línea:	https://doaj.org/article/0f8f59846d754474be2755bc7050a0a9
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spelling	oai:doaj.org-article:0f8f59846d754474be2755bc7050a0a92021-11-25T04:30:10ZNew mid-Cretaceous cryptic slime mold beetles and the early evolution of Sphindidae (Coleoptera: Cucujoidea)10.3897/asp.79.e727241864-8312https://doaj.org/article/0f8f59846d754474be2755bc7050a0a92021-11-01T00:00:00Zhttps://arthropod-systematics.arphahub.com/article/72724/download/pdf/https://arthropod-systematics.arphahub.com/article/72724/download/xml/https://arthropod-systematics.arphahub.com/article/72724/https://doaj.org/toc/1864-8312Abstract The cryptic slime mold beetles, Sphindidae, are a moderately diverse cucujoid beetle family, whose members are obligately tied to slime molds throughout their life. The fossil record of sphindid beetles is sparse; stem-sphindids and crown-group members of uncertain systematic placement have been reported from Cretaceous ambers. Here we review the Mesozoic fossil record of Sphindidae and report a new sphindid genus and species, Trematosphindus newtoni gen. et sp. nov., from Albian/Cenomanian amber from northern Myanmar (ca. 99 Ma). Trematosphindus is set apart from all other sphindids by the presence of distinct lateral cavities on the anterior pronotal angles. Our phylogenetic analysis identifies Trematosphindus as an early-diverging genus within Sphindidae, sister to the remainder of the family except Protosphindus, or Protosphindus and Odontosphindus. The new fossils provide evidence that basal crown slime mold beetles begun to diversify by the mid-Cretaceous, providing a valuable calibration point for understanding timescale of sphindid co-evolution with slime molds.Yan-Da LiErik TihelkaZhen-Hua LiuDi-Ying HuangChen‑Yang CaiSenckenberg Gesellschaft für NaturforschungarticleScienceQENArthropod Systematics & Phylogeny, Vol 79, Iss , Pp 587-597 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Science Q
spellingShingle	Science Q Yan-Da Li Erik Tihelka Zhen-Hua Liu Di-Ying Huang Chen‑Yang Cai New mid-Cretaceous cryptic slime mold beetles and the early evolution of Sphindidae (Coleoptera: Cucujoidea)
description	Abstract The cryptic slime mold beetles, Sphindidae, are a moderately diverse cucujoid beetle family, whose members are obligately tied to slime molds throughout their life. The fossil record of sphindid beetles is sparse; stem-sphindids and crown-group members of uncertain systematic placement have been reported from Cretaceous ambers. Here we review the Mesozoic fossil record of Sphindidae and report a new sphindid genus and species, Trematosphindus newtoni gen. et sp. nov., from Albian/Cenomanian amber from northern Myanmar (ca. 99 Ma). Trematosphindus is set apart from all other sphindids by the presence of distinct lateral cavities on the anterior pronotal angles. Our phylogenetic analysis identifies Trematosphindus as an early-diverging genus within Sphindidae, sister to the remainder of the family except Protosphindus, or Protosphindus and Odontosphindus. The new fossils provide evidence that basal crown slime mold beetles begun to diversify by the mid-Cretaceous, providing a valuable calibration point for understanding timescale of sphindid co-evolution with slime molds.
format	article
author	Yan-Da Li Erik Tihelka Zhen-Hua Liu Di-Ying Huang Chen‑Yang Cai
author_facet	Yan-Da Li Erik Tihelka Zhen-Hua Liu Di-Ying Huang Chen‑Yang Cai
author_sort	Yan-Da Li
title	New mid-Cretaceous cryptic slime mold beetles and the early evolution of Sphindidae (Coleoptera: Cucujoidea)
title_short	New mid-Cretaceous cryptic slime mold beetles and the early evolution of Sphindidae (Coleoptera: Cucujoidea)
title_full	New mid-Cretaceous cryptic slime mold beetles and the early evolution of Sphindidae (Coleoptera: Cucujoidea)
title_fullStr	New mid-Cretaceous cryptic slime mold beetles and the early evolution of Sphindidae (Coleoptera: Cucujoidea)
title_full_unstemmed	New mid-Cretaceous cryptic slime mold beetles and the early evolution of Sphindidae (Coleoptera: Cucujoidea)
title_sort	new mid-cretaceous cryptic slime mold beetles and the early evolution of sphindidae (coleoptera: cucujoidea)
publisher	Senckenberg Gesellschaft für Naturforschung
publishDate	2021
url	https://doaj.org/article/0f8f59846d754474be2755bc7050a0a9
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New mid-Cretaceous cryptic slime mold beetles and the early evolution of Sphindidae (Coleoptera: Cucujoidea)

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