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The genus Anatrichus Loew, 1860 belongs to the subfamily Oscinellinae of the family Chloropidae. We report the complete mitogenome of Anatrichus pygmaeus as the new representative of the subfamily Oscinellinae. The complete mitochondrial genome was 17,125 bp in length. It consisted of 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes, and a control region. The phylogenetic result showed that the family Chloropidae is monophyletic, and the subfamily Chloropinae is a sister group of the subfamily Oscinellinae.

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Two new species of nemourid stonefly, Amphinemura kondratieffi sp. nov. and A. setosa sp. nov., are described from Yunnan Province of southwestern China. The relationships between the new species and their related species within the genus or species group are discussed.

Seventeen species of Minettia Robineau-Desvoidy, 1830 from Southwest China are described as new to science: Minettia (Plesiominettia) bicolorata sp. nov., M. (P.) caii sp. nov., M. (P.) cuiae sp. nov., M. (P.) dulongjiangensis sp. nov., M. (P.) huangi sp. nov., M. (P.) ludingensis sp. nov., M. (P.) mediclavata sp. nov., M. (P.) nujiangensis sp. nov., M. (P.) orbitalis sp. nov., M. (P.) prominens sp. nov., M. (P.) spiniphallata sp. nov., M. (P.) surstylata sp. nov., M. (Minettia) annulifera sp. nov., M. (M.) baii sp. nov., M. (M.) scutellata sp. nov., M. (M.) terminalis sp. nov. and M. baihualingensis sp. nov. The new species M. baihualingensis sp. nov. cannot be classified under one of the five known subgenera because of its unique characteristics. Keys to separate world species of the subgenus Plesiominettia and Oriental species of the subgenus Minettia are presented.