Abstract
<jats:p>We present the genome dataset of a dipluran species, Occasjapyx japonicus, representing the first dipluran genome assembled using HiFi long-read sequencing technology. The assembled genome is approximately 439.3 Mbp in size, comparable to those of other dipluran species available in public databases. The N50 value of 15.5 Mbp exceeds that reported for other dipluran species. The assembled gene set contains 19,635 genes, a number not significantly different from those estimated in previous analyses of two other dipluran species. Functional gene annotation was conducted using predicted amino acid sequences derived from the gene set. BUSCO analysis indicated that the assembled genome contains the majority of conserved core genes. These findings suggest that the O. japonicus genome and associated data are of sufficient quality to serve as a reference genome. The dataset will be valuable for studies in comparative or evolutionary biology, particularly in understanding hexapod evolution and the emergence of insects.</jats:p>