Late Triassic lacewings (Insecta: Neuroptera) from Japan

ABSTRACT

Five new genera and species of Neuroptera are described from the Late Triassic Momonoki Formation (Japan): Nipponopsychops fusilis gen. et sp. nov. (Osmylopsychopidae), Triassoberotha japonica gen. et sp. nov. (Berothidae), Yamaguchius splendidus gen. et sp. nov. (Ithonoidea, Fam. indet.), Ominopsis enigmaticus gen. et sp. nov. (Ithonoidea, Fam. indet.) and Momonokus obscurus gen. et sp. nov. (Osmyloidea, Fam. indet.). These findings constitute one of the richest faunas of Triassic Neuroptera, rivalling that from Queensland (Australia). Yamaguchius splendidus gen. et sp. nov., the earliest known ithonid-like lacewing, demonstrates the presence of oblique radial branches, a condition rarely found in Neuroptera. Nipponopsychops fusilis gen. et sp. nov. and Triassoberotha japonica gen. et sp. nov. are among the earliest records of Osmylopsychopidae and Berothidae.

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KEYWORDS:

• Carnian
• Mesozoic
• fossil insects
• Berothidae
• Osmylidae

Acknowledgments

We express our gratitude to Hideo Ishida and Taniguchi Shunji for donating the specimens of Neuroptera collected at Ominé locality to MMHF. We are grateful to Haruyoshi Maeda and Yasuhiro Ito from the Kyushu University Museum for their assistance with the equipment. We are much in debt to Alexandr Rasnitsyn and two other anonymous reviewers for their valuable comments which helped us to significantly improve our paper.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The research was supported by the Russian Science Foundation, project no. 21-14-00284 (for AVK) and JSPS KAKENHI Grant Number JP19J20625 and JSPS Postdoctoral Fellowship for Research Abroad (No.202360114) (for NO).