“…Examples of species that aggregate include vertebrates such as penguins [Waters et al, 2012] and bats [Kerth, 2008, Roverud andChappell, 1991] as well as insects such as beetles [Deneubourg et al, 1990], ants [Reynaert et al, 2006a and cockroaches [Ame et al, 2004, Jeanson et al, 2005. While these aggregations are often planar, eusocial insects such as honey bees [Kastberger et al, 2011, Seeley, 2010, army ants [Franks, 1989], and re ants [Mlot et al, 2011] extend this strategy and create three-dimensional assemblages. These self-assemblages are composed of a multitude of individuals who link their bodies, doing so without a global overseer and with limited cognitive abilities [Anderson et al, 2002].…”