Differences in Nanostructure and Hydrophobicity of Cicada (Cryptotympana atrata) Forewing Surface with the Distribution of Precipitation

Figure 4

Correlation of the nanostructure with the month and annual average precipitation rates between the years 1950 and 2000, at the various locations the cicada Cryptotympana atrata was distributed. (a) The diameter of protrusions shows a positive correlation with the precipitation in October. (b–f) The spacing of protrusions displays a negative relationship with September to December and annual precipitation. (g, h) The height of protrusions shows a positive correlation with the precipitation of October and annual rainfall, respectively. The data were obtained from the WorldClim data.

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