Abstract
Pachynomidae is a poorly known heteropteran group currently considered as a distinct family closely related to Reduviidae. Taxonomic position of Pachynomidae has been debated for a long time. Knowledge about mitochondrial genome (mitogenome) of this family also remain limited. In the present study, we describe the complete mitogenome of Camarochiloides weiweii, the first mitogenome sequenced for this family. This mitogenome consists of 13 protein-coding genes, two rRNA genes and 21 tRNA genes. Two tRNA gene rearrangements in this genome, including the translocation of trnA and trnR as well as the transposition of trnH, were observed and could be explained by the tandem duplication-random loss (TDRL) model. Bayesian and maximum likelihood analyses based on sequences of three different mitogenomic datasets recovered the monophyly of Reduvioidea, and the sister relationship between Reduvioidea and the remaining Cimicomorpha lineages. This study enlightens the future application of mitogenomic data in the phylogenetic study of Cimicomorpha based on the large-scale sampling.
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