% Images of Voronoi Diagrams with side captions \def\twopic#1#2#3#4{%files, size \hbox{\pdfximage width #3 height #4{#1}\pdfrefximage\pdflastximage\pdfximage width #3 height #4{#2}\pdfrefximage\pdflastximage} } \def\fourpic#1#2#3#4#5#6{%four files, no caption, individual size (wid, hei) \vbox{\twopic{#1}{#2}{#5}{#6}\twopic{#3}{#4}{#5}{#6}} } \line{ \fourpic{imgs/2019-10-30.png}{imgs/trails-24x24.png}{imgs/obstacles-24x24.png}{imgs/pits-24x24.png}{2.5in}{2in} \hfil \vbox{\hsize=5.5in \noindent{\bf $24x24$ Trials} These Voronoi diagrams, which label the territories of each ant\-lion (an ant\-lion ``possesses'' a part of the map within its segmented portion if its pit---the blue dot---is closest to that point). By examination of the Voronoi diagrams in conjunction with measurement of the nearest neighbor metric, it was determined that ant\-lions regularize their nesting pattern to fairly allocate food intake. Based on the Voronoi diagrams depicted it can be also concluded that the introduction of fake pits most significantly altered the distribution patterns of the ant\-lions because antlions created fewer pits. } } \vskip.2in \line{ %%Images \fourpic{imgs/2019-12-3.png}{imgs/trails-12x12.png}{imgs/pits-12x12.png}{imgs/obstacles-12x12.png}{2.5in}{2in} \hfil \vbox{\hsize=5.5in% \noindent{\bf $12\times12$ Trials} In order to correlate environmental factors and spatial distribution of the ant\-lions, four similar trials were conducted after the initial $24\times24$ trial, where the enclosure size was reduced to $12\times12$. The Voronoi diagrams for this subtrial for each of environmental conditions and a $12\times12$ control are shown to the left. Given the fact that the Voronoi area (the area of land that is closest to a given pit) remaIns relatively constant across all trials and sub\-trials it can effectively be concluded that the antlions have a non-random distribution pattern. Furthermore, since the mode of communication of the antlions seems to be undisturbed by both the introduction of fake pits, obstacles and the removal of trails, it can be concluded that the non-random distribution observed is not due to communication, but rather canabalism, which is the regulating factor in the antlions distribution pattern. } }