Antlions organize themselves systematically in response to the
environments where they find themselves.
Individuals attempt to regularize their own pit locations according to
nearby pits and the borders of the living space, and this structure is
affirmed by a statistical test on the uniformity of their distribution.
Using a Monte Carlo simulation of 10,000 randomly distributed patterns
of the same number of pits as observed from each trial, a typical
distribution of the distance to the nearest neighbor was determined.
The distance to the nearest neighbor is approximately independent for
each pit, so a Cram\'er-von Mises statistical test was applied to the
observed distributions, resulting in striking evidence that these pit%'
dsitributions do not conform to a uniformly random independent
distribution of each pit, with all (except one) distributions of
antlions having $p<0.05.$