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(A–D) Mature males of O. albistylum (A), O. melania (B), O. luzonicum (C) and O. glaucum (D). (E–F) Gynandromorphic individuals of O. japonimum (E) and Lyriothemis pachygastra (F). Photos courtesy of Mitsutoshi Sugimura (E) and Makoto Machida (F).
