# Complete mitochondrial genome and phylogenetic position of the gall aphid Chaetogeoica ulmidrupa (Hemiptera: Aphididae)

## TL;DR

This paper reports the full mitochondrial genome of a gall-forming aphid and its evolutionary relationship with other aphids that feed on the same host plant.

## Contribution

The study provides the first complete mitochondrial genome sequences for Chaetogeoica ulmidrupa and clarifies its phylogenetic position.

## Key findings

- The mitochondrial genome of C. ulmidrupa has a strong A+T bias and specific gene start and stop codon patterns.
- C. ulmidrupa is phylogenetically closely related to C. yunlongensis and Slavum lentiscoides, which all form galls on P. chinensis.

## Abstract

We sequenced two complete mitochondrial genomes of Chaetogeoica ulmidrupa, a gall-forming aphid on Pistacia chinensis. Each genome consists of 13 protein-coding genes, 22 tRNA genes, two rRNA genes and a control region, with a strong A+T bias (∼85%). All protein-coding genes initiate with ATN codon and terminate with TAA, except for ND4 and COX1 ending with a single T. Phylogenetic analysis strongly supported that C. ulmidrupa was sister to C. yunlongensis and together they formed a clade with Slavum lentiscoides, all three species of which feed on the primary host plant P. chinensis to form galls.