Elucidation of morphological evolutionary history of beetle fossils using internal structures and its application to phylogenetics

2022 Fiscal Year Annual Research Report

• Project/Area Number: 20J00159
• Research Institution: Hokkaido University
• Principal Investigator: 山本 周平 北海道大学, 総合博物館, 特別研究員(SPD)
• Project Period (FY): 2020-04-24 – 2023-03-31
• Keywords: 琥珀化石 / 鞘翅目 / ハネカクシ / 内部形態 / X線マイクロCT / 系統解析 / アリ / エンマムシ

Outline of Annual Research Achievements

最終年度は査読付き英文論文の成果発表が極めて順調であり、計17編が出版された。具体的な内訳は、単著2編、筆頭兼責任著者5編、責任著者1編、その他共著9編である。加えて共著1編が出版を待っている。

共著論文ではあるものの、本年度最大の成果は、白亜紀の琥珀中のアリ化石から頭部の内部形態を3D構築するのに成功したことであろう (Richter et al., 2022, Insect Systematics and Diversity)。本研究は中生代の昆虫化石における軟組織の精密な立体構造を初めて明らかにした例となり、筋肉系だけでなく、中枢神経系や脳といった微細で脆弱な軟体部の解剖学的情報も三次元的に得られた。同時に採餌行為の鍵となる大顎の形態抽出にも成功し、現代のアリに見られる「シャベル型」の大顎の形成過程についても議論した。当該成果は保存状態が例外的に優れた化石が基になっているが、本研究は社会性昆虫としてのアリの繁栄を考える上で重要な知見になるかもしれない。本研究以外にも、ベニボタル科甲虫のErotinae亜科における警告色の進化史を明らかにした論文は、責任著者として貢献した主要な業績と言える (Motyka et al., 2023, iScience)。これは始新世バルト琥珀から発見されたベニボタル科甲虫の化石から着想を得て、分子と形態の双方から系統解析を行い、始新世当時から色鮮やかな警告色を有するベニボタルがいたものと推測された。その他の特筆すべき研究として、顕著に肥大化した後脚を有する約1億年前のエンマムシ甲虫を新種として発表するとともに、そのような形態的特殊化が好蟻性と関係している可能性について論じた論文を発表した (Yamamoto & Caterino, 2022, Palaeoworld)。

これら一連の研究により、本研究が目指していた目標課題は概ね達成された。

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Czech Advanced Technology Research Inst(チェコ)
  • Country Name: CZECH
  • Counterpart Institution: Czech Advanced Technology Research Inst
• [Int'l Joint Research] National Academy of Sciences of Ukraine(ウクライナ)
  • Country Name: UKRAINE
  • Counterpart Institution: National Academy of Sciences of Ukraine
• [Int'l Joint Research] Polish Academy of Sciences(ポーランド)
  • Country Name: POLAND
  • Counterpart Institution: Polish Academy of Sciences
• [Int'l Joint Research] Clemson University/Field Museum of Natural History(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: Clemson University/Field Museum of Natural History
• [Int'l Joint Research] Friedrich-Schiller-Universitat Jena(ドイツ)
  • Country Name: GERMANY
  • Counterpart Institution: Friedrich-Schiller-Universitat Jena
• [Int'l Joint Research]
  • # of Other Countries: 6
• [Journal Article] (In Press) Kekveus brevisulcatus sp. nov., a new featherwing beetle from mid-Cretaceous amber of northern Myanmar (Coleoptera: Ptiliidae) (2023)
  • Author(s): Li, Y.-D., Yamamoto, S., Newton, A.F., Cai, C.-Y.
  • Journal Title: PeerJ Volume: 11 Pages: e15306
  • DOI: 10.7717/peerj.15306
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A new remarkable cimicoid genus and species (Hemiptera, Heteroptera, Cimicomorpha) from mid-Cretaceous Burmese amber, with implications for its aberrant male genitalia (2023)
  • Author(s): Yamada, K., Yamamoto, S., Takahashi, Y.
  • Journal Title: Fossil Record, Volume: 26 Pages: 27-38
  • DOI: 10.3897/fr.26.e86784
  • Peer Reviewed / Open Access
• [Journal Article] Stag beetle fauna of Cambodia (Coleoptera: Lucanidae) (2023)
  • Author(s): Maquart, P.-O., Yamamoto, S., Sopha, S., Chhorn, S., Phak, S., Sinovas, P., Phauk, S., Boyer, S.
  • Journal Title: Journal of Asia-Pacific Entomology Volume: 26 Pages: 102008
  • DOI: 10.1016/j.aspen.2022.102008
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Eocene aposematic patterns persist in modern European Lycidae beetles despite the absence of co-mimics (2023)
  • Author(s): Motyka, M., Kazantsev, S.V., Kusy D., Perkovsky, E.E., Yamamoto, S., Bocak, L.
  • Journal Title: iScience Volume: 26 Pages: 106217
  • DOI: 10.1016/j.isci.2023.106217
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Phylogeny and systematics of Sphaeriusidae (Coleoptera: Myxophaga): minute living fossils with underestimated past and present-day diversity (2023)
  • Author(s): Fikacek, M., Yamamoto, S., Matsumoto, K., Beutel, R.G., Maddison, D.R.
  • Journal Title: Systematic Entomology Volume: 48 Pages: 233-249
  • DOI: 10.1111/syen.12571
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A remarkable new genus of Nevrorthidae (Neuroptera, Osmyloidea) (2023)
  • Author(s): Nakamine, H., Yamamoto, S., Takahashi, Y., Liu X.
  • Journal Title: Deutsche Entomologische Zeitschrift Volume: 70 Pages: 113-120
  • DOI: 10.3897/dez.70.98873
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] First country record of the stag beetle species Falcicornis mellianus (Kriesche, 1921) (Coleoptera: Lucanidae) from Laos (2023)
  • Author(s): Yamamoto, S., Sengsay, S.
  • Journal Title: The Coleopterists Bulletin Volume: 77 Pages: 16-18
  • DOI: 10.1649/0010-065X-77.1.16
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The oldest case of paedomorphosis in rove beetles and description of a new genus of Paederinae from Cretaceous amber (Coleoptera: Staphylinidae) (2023)
  • Author(s): Tokareva, A., Koszela, K., Ferreira, V.S., Yamamoto, S., Zyla, D.
  • Journal Title: Scientific Reports Volume: 7 Pages: 45904
  • DOI: 10.1038/s41598-023-32446-2
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A new stag beetle species of the genus Gnaphaloryx Burmeister from Java, western Indonesia (Coleoptera: Lucanidae) (2023)
  • Author(s): Yamamoto, S., Qodri, A.
  • Journal Title: Oriental Insects Volume: 57 Pages: 707-727
  • DOI: 10.1080/00305316.2022.2120920
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The earliest fossil record of the extant rove beetle genus Phloeocharis from mid-Cretaceous Kachin amber of northern Myanmar and its biogeographic implications (Coleoptera: Staphylinidae: Phloeocharinae) (2023)
  • Author(s): Yamamoto, S., Newton, A.F.
  • Journal Title: Journal of Asia-Pacific Entomology Volume: 26 Pages: 102050
  • DOI: 10.1016/j.aspen.2023.102050
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A new species of Prosolierius rove beetle with highly modified antennae from mid-Cretaceous Kachin amber of northern Myanmar (Coleoptera, Staphylinidae, Solieriinae) (2023)
  • Author(s): Yamamoto, S.
  • Journal Title: Journal of Asia-Pacific Entomology Volume: 26 Pages: 102075
  • DOI: 10.1016/j.aspen.2023.102075
  • Peer Reviewed
• [Journal Article] First fossil eleusinin rove beetle (Coleoptera: Staphylinidae: Osoriinae: Eleusinini) from mid-Cretaceous Kachin amber of northern Myanmar and its evolutionary implications (2023)
  • Author(s): Yamamoto, S.
  • Journal Title: Palaeoworld Volume: - Pages: -
  • DOI: 10.1016/j.palwor.2023.01.007
  • Peer Reviewed
• [Journal Article] A remarkable new fossil species of Amplectister with peculiar hindleg modifications (Coleoptera: Histeridae): further evidence for myrmecophily in Cretaceous clown beetles (2022)
  • Author(s): Yamamoto, S., Caterino, M.S.
  • Journal Title: Palaeoworld Volume: - Pages: -
  • DOI: 10.1016/j.palwor.2022.09.010
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Revisiting the Raractocetus fossils from Mesozoic and Cenozoic amber deposits (Coleoptera: Lymexylidae) (2022)
  • Author(s): Li, Y.-D., Peris, D., Yamamoto, S., Hsiao, Y., Newton, A.F., Cai, C.-Y.
  • Journal Title: Insects Volume: 13 Pages: 768
  • DOI: 10.3390/insects13090768
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Archaeomegalomus gen. nov.: A remarkable new brown lacewing from mid-Cretaceous Kachin amber from northern Myanmar (Neuroptera: Hemerobiidae) (2022)
  • Author(s): Nakamine, H., Yamamoto, S., Takahashi, Y.
  • Journal Title: Zootaxa Volume: 5178 Pages: 380-390
  • DOI: 10.11646/zootaxa.5178.4.4
  • Peer Reviewed / Open Access
• [Journal Article] First record of Aleochara (Emplenota) segregata Yamamoto et Maruyama, 2012 (Coleoptera, Staphylinidae, Aleocharinae) from North Korea (2022)
  • Author(s): Yamamoto, S., Suzumura, A.L.
  • Journal Title: Elytra, Tokyo, New Series, Volume: 12 Pages: 72-74
  • Peer Reviewed / Open Access
• [Journal Article] The First reconstruction of the head anatomy of a Cretaceous insect, †Gerontoformica gracilis (Hymenoptera: Formicidae), and the early evolution of ants (2022)
  • Author(s): Richter, A., Boudinot, B.E., Yamamoto, S., Katzke, J., Beutel, R.G.
  • Journal Title: Insect Systematics and Diversity Volume: 6 Pages: 4
  • DOI: 10.1093/isd/ixac013
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Taxonomic notes on the genus Pseudoligota Cameron (Coleoptera: Staphylinidae: Aleocharinae) from Japan (2022)
  • Author(s): Hashizume, T., Yamamoto, S., Maruyama, M.
  • Journal Title: Zootaxa Volume: 5227 Pages: 100-108
  • DOI: 10.11646/zootaxa.5227.1.4
  • Peer Reviewed / Open Access
• [Presentation] ハネカクシ科の高次分類：近年の変更と今後の課題 (2022)
  • Author(s): 山本周平
  • Organizer: 第12回日本甲虫学会大会, 明星大学日野校 (東京都日野市) (オンライン開催)
• [Remarks] 研究者個人のwebsite
  • URL: https://yamamotoshuhei.jimdofree.com/
• [Remarks] 研究者個人のresearchmap
  • URL: https://researchmap.jp/yamashu1989/?lang=ja
• [Remarks] 研究者個人のResearchGate
  • URL: https://www.researchgate.net/profile/Shuhei-Yamamoto-2
• [Remarks] 研究者個人のORCID
  • URL: https://orcid.org/0000-0002-4162-8457
• [Remarks] 研究者個人のZoobank
  • URL: https://zoobank.org/Authors/A31681F8-E112-4A14-B3DB-75EF9A33C550