K(r) values calculated from spatial distribution of entry holes of P. proximus.

The solid lines are K(r) values of the observed pattern, and the gray shaded areas are the 95% confidence envelopes estimated from 10,000 simulations. Red dashed lines are the median of estimated K(r) values under the completely spatially random pattern. The letters A and U indicate that significantly aggregated and uniform distribution patterns are observed, respectively, and the numbers following the letters indicate r ranges where the significance was observed.