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Abstract A new subgenus of leaf-beetles Chrysolina ( Ambrostomima subgen. nov.) is described from Hengduan Mountains (Sichuan and Gansu, China). It is characterized by the following main characters: body metallic, mostly green mixed with purple or one-colored green; last maxillary palpomere elongate, narrow, similar in both sexes; elytral punctures arranged in more or less distinct rows or mostly irregular; elytral epipleura inclined outside; hind wings completely missing; pygidium without furrow in apical 1/2 in most species; tarsomeres 1–3 more or less broadened in male, narrow in female, with entire sole in both sexes. The subgenus consists of 25 species: Chrysolina amica Lopatin, Ch. baimana Lopatin, Ch . davidiani Lopatin, Ch. korotjaevi Lopatin, Ch. luyoui Daccordi et Ge, Ch. matruelis Lopatin, Ch . mirabilis (Daccordi), Ch. nesterovae Lopatin, Ch. pingchuana Lopatin, Ch. purpureoviridis Lopatin, Ch. rotundata Lopatin, Ch. sichuanica Lopatin, Ch. sicieni Ge et Yang, Ch. songpana Lopatin, Ch. viridiopaca Lopatin, Ch . aurita sp. nov., Ch. auriviridis sp. nov., Ch. bellissima sp. nov., Ch. ferdinandoi sp. nov., Ch. korolevi sp. nov., Ch. latipes sp. nov., Ch. ovata sp. nov., Ch. pilula sp. nov., Ch. pulchra sp. nov., and Ch. tortilla sp. nov. Types of all previously described species except Ch. luyoui are examined. Males of Ch. mirabilis and Ch. viridiopaca are examined and described for the first time. Key to species is compiled. Type localities of Ch. viridiopaca and Ch. songpana are corrected. Photographs of habitus and male aedeagi are presented for all species.
Andrzej O. Bieńkowski (Wed,) studied this question.
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