Additional file 1 of Lepidoptera demonstrate the relevance of Murray’s Law to circulatory systems with tidal flow

Additional file 1 Supplement 1. Supplementary methods, results, and discussion of the potential impact of image quality. Figure S1. Values of k for bifurcations measured at the Finnish Museum of Natural History (Luomus), categorized by the magnification of the microscope when the wing slides were photographed. Figure S2. Measurement error, in microns, of the diameters of 100 wing veins that were measured twice at with the same microscope at the same magnification.