Scale insect web catalog
Saturday, 30th of May, 2015

Frequency Distribution of Scale Insect Range Sizes (number of countries)

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Rough and Ready

Number of species on the Y axis. Number of countries in bins of 10s on the X. Given broad variation among countries in area, this is a very crude measure. It still illustrates a common trend in geographic range size. Most species have relatively small ranges, and the frequency distrubution appears lognormal, with a heavy right-skew.