Requested reference
Koch, C. L. (1834). Arachniden. In: Herrich-Schäffer, G. A. W. (ed.) Deutschlands Insecten. Friedrich Pustet, Regensburg, Heft 122-126. [H. 127 moved to 1835 after Nagel & Grieder, 2019: 109] doi:10.5962/bhl.title.15007 -- Show included taxa