Project 3592: A. Bogri, A. Solodovnikov, J. L. Kypke, D. Żyła. 2020. Baltic amber members of the extant Micrillus–Scymbalium lineage of the Paederinae rove beetles (Coleoptera, Staphylinidae) and their systematic and ecological significance. Invertebrate Systematics. 34 (5):451-473.
Specimen: † Micrillus electrus (unvouchered)
View: dorsal side

Abstract

Paederinae, a diverse subfamily of rove beetles (Staphylinidae), is poorly explored with an outdated subtribal and generic classification lacking proper phylogenetic perspective. Therefore, the discovery of two Baltic amber fossil specimens resembling the genera Micrillus and Scymbalium, which are particularly challenging in terms of systematics, called for a thorough analysis to infer their phylogenetic position and their ecological requirements. The fossils were examined with light microscopy supplemented by X-ray micro-computed tomography, and then scored into a Paederinae-specific matrix of 99 morphological characters, along with a broad sample of recent Paederinae and non-paederine outgroups. Morphological phylogenetic analyses were conducted, using Bayesian Inference and Maximum Parsimony. The obtained phylogeny confirmed that the genera Scymbalium and Micrillus form a lineage outside Lathrobiina; therefore, both genera are now classified as Lathrobiini incertae sedis pending a more inclusive phylogenetic work on Paederinae. The analysis firmly placed both fossils in that recent lineage, albeit rendering Micrillus paraphyletic with respect to Scymbalium. Without a more extensive analysis based on the revised world fauna, any systematic changes would be premature. Thus, the fossils are described as Micrillus electrus, sp. nov. and Scymbalium phaethoni, sp. nov. in accordance with the current diagnoses of both genera. Given that the recent species of Micrillus and Scymbalium are predominantly thermophilic and mainly confined to dry open landscapes in Africa, southern Eurasia and Australia, the finding of Baltic amber representatives implies the very diverse landscape and the equable (sub)tropical palaeoclimatic conditions of the Eocene amberiferous ‘forest’, the latter being the subject of continued debates.


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Article DOI: https://doi.org/10.1071/IS19070

Project DOI: 10.7934/P3592, http://dx.doi.org/10.7934/P3592
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 42 Taxa
  • 1 Specimen
  • 99 Characters
Total size of project's media files: 6.2M

Download Project SDD File
Total scored cells: 3912
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 99
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 224
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:99/0
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MorphoBank Project 3592

    Authors' Institutions

    • Copenhagen University

    • Iowa State University

    • Natural History Museum of Denmark

    • University of Gdansk



    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    Dagmara Zyla
    Project Administrator
    Last logged in 06/27/20
    421199003912
    (3844, 0, 68)
    000


    Taxonomic Overview for Matrix 'M26776' (41 Taxa)

    taxon unscored
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    NPA
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    "-" cellscell images labels on
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    [1] Quedius molochinus (quediina)
    Last Modified in 06/27/20
    0929207001
    [2] Platyprosopus elongatus (platyprosopini)
    Last Modified in 06/27/20
    0929207001
    [3] Achenium humile (lathrobiina)
    Last Modified in 06/27/20
    0989801001
    [4] Domene scabricollis (lathrobiina)
    Last Modified in 06/27/20
    3939303001
    [5] Lathrobium brunnipes (lathrobiina)
    Last Modified in 06/27/20
    0969603001
    [6] Lathrobium fulvipenne (lathrobiina)
    Last Modified in 06/27/20
    0969603001
    [7] Lobrathium grande (lathrobiina)
    Last Modified in 06/27/20
    0989801001
    [8] Lobrathium reitteri (lathrobiina)
    Last Modified in 06/27/20
    3949402001
    [9] Pseudolathra pulchella (lathrobiina)
    Last Modified in 06/27/20
    0989801001
    [10] Tetartopeus rufonitidus (lathrobiina)
    Last Modified in 06/27/20
    0969603001
    [11] Micrillus distortus (lathrobiina)
    Last Modified in 06/27/20
    2969601001
    [12] Micrillus irakensis (lathrobiina)
    Last Modified in 06/27/20
    0979702001
    [13] Micrillus testaceus (lathrobiina)
    Last Modified in 06/27/20
    2979700001
    [14] Scymbalium anale (lathrobiina)
    Last Modified in 06/27/20
    0999900001
    [15] Scymbalium laetum (lathrobiina)
    Last Modified in 06/27/20
    3969600001
    [16] Scymbalium lathrobioides (lathrobiina)
    Last Modified in 06/27/20
    6929201001
    [17] Scymbalium minutissimum (lathrobiina)
    Last Modified in 06/27/20
    6929201001
    [18] Scymbalium simplarium (lathrobiina)
    Last Modified in 06/27/20
    4959500001
    [19] Scymbalium sparsicolle (lathrobiina)
    Last Modified in 06/27/20
    4959500001
    [20] Scymbalium usagarae (lathrobiina)
    Last Modified in 06/27/20
    5949400001
    [21] Micrillus fossil (lathrobiina)
    Last Modified in 06/27/20
    43565600001
    [22] Scymbalium fossil (lathrobiina)
    Last Modified in 06/27/20
    34656500001
    [23] Dysanabatium jacobsoni (lathrobiina)
    Last Modified in 06/27/20
    3959501001
    [24] Phanophilus comptus (lathrobiina)
    Last Modified in 06/27/20
    2969601001
    [25] Notobium (lathrobiina)
    Last Modified in 06/27/20
    3969600001
    [26] Astenus californicus (astenina)
    Last Modified in 06/27/20
    0949405001
    [27] Nazeris pallidipes (astenina)
    Last Modified in 06/27/20
    0949405001
    [28] Dibelonetes sp. (stilicopsina)
    Last Modified in 06/27/20
    2959502001
    [29] Achenomorphus corticinus (medonina)
    Last Modified in 06/27/20
    0989801001
    [30] Medon apicalis (medonina)
    Last Modified in 06/27/20
    0989801001
    [31] Sunius melanocephalus (medonina)
    Last Modified in 06/27/20
    0969603001
    [32] Echiaster sp (echiasterina)
    Last Modified in 06/27/20
    3949402001
    [33] Rugilus angularis (stilicina)
    Last Modified in 06/27/20
    0979702001
    [34] Scopaeus minutus (scopaeina)
    Last Modified in 06/27/20
    5939301001
    [35] Pinophilus sp. (pinophilini)
    Last Modified in 06/27/20
    3949402001
    [36] Procirrus lefebvrei (pinophilini)
    Last Modified in 06/27/20
    1969602001
    [37] Homaeotarsus bicolor (cryptobiina)
    Last Modified in 06/27/20
    3959501001
    [38] Ochthephilum fracticorne (cryptobiina)
    Last Modified in 06/27/20
    0989801001
    [39] Hyperomma mandibulare (dicaxina)
    Last Modified in 06/27/20
    3949402001
    [40] Leptobium gracile (dolicaonina)
    Last Modified in 06/27/20
    3969600001
    [41] Paederus littorarius (paederina)
    Last Modified in 06/27/20
    1989800001


    Project views

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    Total project views115
    Project overview35
    Matrix views17Baltic amber members of the extant Micrillus–Scymbalium lineage of the Paederinae rove beetles (Coleoptera, Staphylinidae) and their systematic and ecological significance (5 views); Matrix landing page (12 views);
    Media views24Media search (21 views); M692399 (3 views);
    Specimen list9
    Views for media list6
    Taxon list19
    Bibliography5




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    Total downloads from project5
    Matrix downloads3Baltic amber members of the extant Micrillus–Scymbalium lineage of the Paederinae rove beetles (Coleoptera, Staphylinidae) and their systematic and ecological significance (3 downloads);
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