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The complete mitochondrial genome of a soldier beetle, Cantharis plagiata (Coleoptera, Canthridae), was sequenced. The mitogenome is a double-stranded circular molecule, and the obtained sequence had 13 protein-coding genes (PCGs), 22 tRNA genes, 2 rRNA subunits, and an AT-rich region, as in other insects. Total length of this mitogenome is 16,315 bp and the composition of each base is A (41.4%), T (37.5%), C (12.7%), G (8.4%), respectively. The phylogenetic tree analysis using 25 species of Elateroidea showed that C. plagiata is closest to C . pellucida , which confirms its systematic status in Cantharidae., Competing Interests: No potential conflict of interest was reported by the author(s)., (© 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.)

The complete mitochondrial genome of a net-winged beetle was sequenced, Lycostomus sp. (Coleoptera: Lycidae). The total length of this mitogenome is 16096 bp and the composition of each base is A (41.1%), T (31.9%), C (17.1%), G (9.9%), respectively. The gene arrangement of this beetle mt genome is the same as other insects. The phylogenetic tree shows that Lycostomus sp. is closest to Platerodrilus sp. with robust statistical support, which confirms the monophyly of Lycidae., Competing Interests: The authors report no conflict of interest. The authors alone are responsible for the content and writing of the article., (© 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.)