December 10, 2025InsectsOpen Access

Revision of the Tribe Xyelini (Hymenoptera: Xyelidae) and New Fossil Records from the Lower Cretaceous of Liaoning Province, China

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Revision identifies new species from the Yixian Formation, indicating notable findings in Hymenoptera evolution.

Three new species are identified from the Lower Cretaceous Yixian Formation in Liaoning Province, China.
The study provides essential insights into the evolution of Hymenoptera with keys to the genera.
New genera are established based on previously described species from different geological periods, suggesting broader historical connections.
The first male Mesozoic specimen of Xyelini is illustrated, highlighting unique genitalia characteristics, relevant to understanding ancient biodiversity.

Li et al. (2025) studied this question.

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