Nearly complete mitochondrial genomes of four bumblebee species (Hymenoptera: Apidae: Bombus)

The nearly complete mitochondrial genomes of four bumblebee species (Bombus sibiricus, Bombus asiaticus, Bombus pyrosoma, and Bombus kashmirensis) were sequenced. Each of the four mitogenomes contained 38 sequence elements including 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, two ribosomal RNA (rRNA) genes, and an AT-rich control region (D-loop). Most elements showed a consistent order among the four mitogenomes, except for two tRNA genes (tRNA-Ala and tRNA-Met). Phylogenetic analyses based on the concatenated sequence of the 13 PCGs showed that Alpigenobombus and Sibiricobombus had the closest relationship, while Melanobombus showed a more basal position.