The mitochondrial genome ofApion squamigerum(Coleoptera, Curculionoidea, Brentidae) and the phylogenetic implications

In this article, we present the nearly complete mitochondrial genome (mitogenome) of the weevil beetleApion squamigerum(Curculionoidea, Brentidae), assembled using data from Illumina next generation sequencing (NGS). This mitogenome was found to be very large, with the total length of 18,562 bp. TwotrnMgenes were identified. A large non-coding intergenic spacer spanning 1,949 bp occurred betweentrnIand trnM2. Combined with 111 existing weevil mitogenomes, we conducted phylogenetic reconstructions based on various datasets under maximum likelihood and Bayesian inference. Firstly, phylogenetic analyses robustly supported a sister group ofA. squamigerumandRhopalapion longirostre, namely, that two species of Apioninae (Brentidae) formed a clade. Within the entire Curculionoidea, the Nemonychidae diverged firstly, following the families Anthribidae and Attelabidae. In addition, a large clade comprising the sister families Brentidae and Curculionidae was strongly supported in all trees.