Mitochondrial genome of Chrysochares punctatus (Coleoptera: Chrysomelidae: Eumolpinae) and phylogenetic analysis.

Here, we determined the nearly complete mitochondrial genome (mitogenome) of Chrysochares punctatus (Coleoptera: Chrysomelidae: Eumolpinae), an important insect pest on Apocynum venetum in Northwestern China. This mitogenome was 14,451 bp long, encoding 13 protein-coding genes (PCGs), 21 transfer RNA genes (tRNAs), and 2 ribosomal RNA genes. The C. punctatus mitogenome presented an A + T content of 75.11%, with a positive AT-skew (0.064) and a negative GC-skew (-0.192). Ten PCGs started with a typical ATN codon, whereas the remaining three PCGs started with AAC (cox1) and TTG (nad1 and nad2). All tRNAs had a typical secondary cloverleaf structure, except for trnS1 which lacked the dihydrouridine arm. Bayesian phylogenetic analysis based on the nucleotide sequences of 13 PCGs recovered a phylogeny within Chrysomelidae: (((Chrysomelinae + Galerucinae), (((Eumolpinae, Lamprosomatinae), Cassidinae), Criocerinae)), Bruchinae).