Chromosome-level genome assembly of the sawfly Nematus trochanteratus.

Authors

Mengmeng Liu, Zhongzhao Xu, Meicai Wei, Zejian Li

Published in

Scientific data. Jul 18, 2026. Epub Jul 18, 2026.

Abstract

Nematus trochanteratus (Malaise, 1931) (Hymenoptera: Tenthredinidae) is a monophagous herbivorous pest that exclusively attacks willow trees (Salix spp.), and exerts significant ecological and economic impacts on forest and garden ecosystems. To date, no high-quality reference genome has been reported for this species, restricting research on its genetic evolution and gene function. In this study, we generated a high-quality chromosome-level genome assembly of N. trochanteratus by integrating PacBio HiFi long-read sequencing, Illumina short-read sequencing, and Hi-C chromatin conformation capture data. The final assembled genome size is 188.07 Mb, with a scaffold N50 of 23.87 Mb, and 9 pseudo-chromosomes were successfully constructed. Using insect universal single-copy orthologs (BUSCO), we estimated the genome completeness at 97.2%. A total of 11,540 protein-coding genes, repetitive sequences accounting for 21.74% of the genome, and diverse non-coding RNA genes were identified by systematic annotation. This genome provides a valuable resource for phylogenetic and functional genomic studies of hymenopteran sawflies.

PMID:
42471334
Bibliographic data and abstract were imported from PubMed on 19 Jul 2026.

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