Madygella Humioi sp. nov. from the Upper Triassic Mine Group, Southwest Japan: The Oldest Record of a Sawfly (Hymenoptera: Symphyta) in East Asia

Nozomu Oyama, Haruyoshi Maeda

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

A primitive sawfly, Madygella humioi sp. nov., belonging to the family Xyelidae (Hymenoptera: Symphyta), is newly described from the Upper Triassic Mine Group, Yamaguchi Prefecture, southwest Japan. The new species differs from the five previously known Madygella species in having a cell length of 1r plus 2r shorter than that of 3r + 4r and a cell height of 3r + 4r lower than 2r plus pterostigma in a forewing. To date, this is the oldest fossil record of sawflies in East Asia. Regarding genus Madygella, this is the first example found outside of the Kyrgyz Republic. This discovery provides an insight into the early evolution of the order Hymenoptera and suggests a widespread distribution of the pioneering genus Madygella during the Triassic period.

本文言語英語
ページ(範囲)64-71
ページ数8
ジャーナルPaleontological Research
24
1
DOI
出版ステータス出版済み - 1 1 2020

All Science Journal Classification (ASJC) codes

  • 生態、進化、行動および分類学
  • 古生物学

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