Johann Jacob Zschach (1737 Leipzig - 1809) was a German naturalist and entomologist.
He was a professor in Leipzig and Marburg and the curator of the Museum Leskeanum.
A systematic list of the specimens contained in the Leske Museum in which new Coleoptera and Lepidoptera were described by Zschach.
Johann Friedrich Gmelin's 13th edition of Linnaeus' Systema Naturae (1788-1793) gave these new species Latin binomial names and the other new species were described again.
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