Abstract
The thread-legged bug genus
Chinemesa
Wygodzinsky, 1966 (Hemiptera: Heteroptera: Reduviidae: Emesinae: Emesini) is a small group of five species endemic to the Oriental Region. However, the species diversity of this genus is still far from completely explored, especially in the mainland of Asia. Here we describe three new species,
C. ornata
sp. n
.,
C. pulchella
sp. n
. and
C. weilingfengi
sp. n
., from southern China. Based on the newly sequenced mitochondrial genomes of four
Chinemesa
species, we detected two gene rearrangement patterns in the genus: a translocation of
trnI
and
trnQ
in all four species, and a loss of
trnW
in
C. pulchella
sp. n
. Both gene rearrangements are novel within Reduviidae as well as Heteroptera, and can be explained by the tandem duplication-random loss (TDRL) model. Phylogenetic analyses based on mitogenomic datasets recovered the monophyly of
Chinemesa
, with the translocation of
trnI
-
trnQ
as a potential molecular synapomorphy for the genus.
Corizus hyoscyami (Heteroptera: Rhopalidae) is a widely distributed and highly polyphagous insect, making it a relevant species for understanding the evolution of herbivory and host adaptation in true bugs. However, the genome of Corizus hyoscyami has not yet been sequenced, limiting investigations into its biological characteristics. In this study, a high-quality chromosome-level genome assembly was generated by integrating MGI DNBSEQ-T7 short-read, PacBio Sequel II long-read, and Hi-C scaffolding technologies. The assembly was assessed to be 97.6% complete by BUSCO. The final genome was assembled into a size of 1.47 Gb, with a contig N50 of 1.61 Mb and a scaffold N50 of 198.34 Mb. The GC content was determined to be 34%, and 94.90% of the sequences were anchored onto 6 chromosome-level scaffolds, representing the major chromosomal elements of the genome. Repetitive sequences accounted for 69.79% of the genome, and 18,540 protein-coding genes were annotated. This genome assembly is expected to facilitate research on adaptive evolution in Heteroptera.
Ye Xu, Yuzhou Zhao, Rong Ji et al.· Scientific Data· 0 citations
