Spatial distribution of Wasmannia auropunctata (red) and Linepithema iniquum (white/gray) arboreal nests over  a 7-ha plot in Puerto Rico. W.  auropunctata  nests dominate the largest  patch (1-ha). Individual trees with W. auropunctata are scattered within smaller clusters of  L.  iniquum  nests, while in the W. auropunctata patch several trees are occupied by L. iniquum.