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A transitional fossil sheds light on the early evolution of the Staphylinine group of rove beetles (Coleoptera: Staphylinidae)
Liu, Yuchu1; Tihelka, Erik2; Thayer, Margaret K.3; Newton, Alfred F.3; Huang, Diying (黄迪颖)4,5; Tian, Li1; Cai, Chenyang(蔡晨阳)4,5
2021-04-23
Source PublicationJOURNAL OF SYSTEMATIC PALAEONTOLOGY
ISSN1477-2019
Pages12
Abstract

Rove beetles of the Staphylinine group of subfamilies represent the most species-rich clade of Staphylinidae, which in turn is the most speciose beetle family. While several relationships within the Staphylinine group are well supported by morphological and molecular data alike, the basal relationships within the clade remain unresolved. In particular, understanding the largest radiation on the beetle tree of life is complicated by the absence of early-diverging transitional fossils. Here we describe a new genus and species of the Staphylinine group of subfamilies from the Lower Cretaceous Yixian Formation in eastern China (c. 125 Ma). Paroxyporus fossilis Cai gen. et sp. nov. shares a number of characters with the monogeneric subfamily Oxyporinae, namely its prognathous head with prominent apically curved mandibles, contiguous procoxae, moderately separated mesocoxae and abdominal intersegmental membranes with a 'brick-wall' pattern. It, however, shares oval procoxae and 'U'-shaped abdominal impressions with the monogeneric subfamily Megalopsidiinae. A parsimony analysis of 211 morphological characters recovered Paroxyporus gen. nov. as sister to the whole Staphylinine group except Oxyporinae, linking Oxyporinae and other clades of the Staphylinine group, and it seems to be a stem member of the Staphylinine group. As such, Paroxyporus gen. nov. may represent an early-diverging isolated lineage within the Staphylinine group, a lineage that has been recognized on the basis of morphological data but challenged by some recent molecular studies, or alternatively a stem member of the Staphylinine group. Together with described fossil members of the subfamily Oxyporinae, Paederine and Staphylinine from the Yixian Formation, Paroxyporus fossilis gen. et sp. nov. is one of the earliest representatives of the Staphylinine group in the fossil record, providing an important calibration point for understanding the timing of the early diversification of rove beetles in the Mesozoic.

KeywordOxyporinae Megalopsidiinae Yixian Formation Jehol Biota Mesozoic missing link
DOI10.1080/14772019.2021.1917705
Indexed BySCI
Language英语
WOS KeywordCRETACEOUS YIXIAN FORMATION ; OXYPORINAE COLEOPTERA ; CHINA ; PHYLOGENY ; LINEAGE ; LARVAE ; GENUS ; MEGOLISTHAERUS ; BEHAVIOR ; RECORD
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[42072022] ; Youth Innovation Promotion Association of the CAS[2018347]
WOS Research AreaEvolutionary Biology ; Paleontology
WOS SubjectEvolutionary Biology ; Paleontology
WOS IDWOS:000650478700001
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the CAS
PublisherTAYLOR & FRANCIS LTD
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/38097
Collection中国科学院南京地质古生物研究所
Corresponding AuthorTian, Li; Cai, Chenyang(蔡晨阳)
Affiliation1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430078, Peoples R China
2.Univ Bristol, Sch Earth Sci, Life Sci Bldg,Tyndall Ave, Bristol BS8 1TQ, Avon, England
3.Field Museum Nat Hist, Negaunee Integrat Res Ctr, Chicago, IL 60605 USA
4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Liu, Yuchu,Tihelka, Erik,Thayer, Margaret K.,et al. A transitional fossil sheds light on the early evolution of the Staphylinine group of rove beetles (Coleoptera: Staphylinidae)[J]. JOURNAL OF SYSTEMATIC PALAEONTOLOGY,2021:12.
APA Liu, Yuchu.,Tihelka, Erik.,Thayer, Margaret K..,Newton, Alfred F..,Huang, Diying .,...&Cai, Chenyang.(2021).A transitional fossil sheds light on the early evolution of the Staphylinine group of rove beetles (Coleoptera: Staphylinidae).JOURNAL OF SYSTEMATIC PALAEONTOLOGY,12.
MLA Liu, Yuchu,et al."A transitional fossil sheds light on the early evolution of the Staphylinine group of rove beetles (Coleoptera: Staphylinidae)".JOURNAL OF SYSTEMATIC PALAEONTOLOGY (2021):12.
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