“…Among bilateral animals, the mechanical processing of food usually happens with the aid of head structures (Brusca & Brusca, 2003), in a way that the head morphological evolution can be strongly linked to food processing demands. Among insects, which show an incredible species diversity and evolved several modes of food consumption (Krenn, 2019), the biomechanics of food capture and processing seems to be a relevant evolutionary pressure for head and mouth appendices morphological variation (Blanke, Schmitz, et al, 2017;Blanke, Watson, et al, 2017;Blanke et al, 2018;Camargo et al, 2015Camargo et al, , 2016Hörnschemeyer et al, 2013;Weihmann et al, 2015). In some insect lineages, evolutionary pressures lead to the development of strong intraspecific morphological variation.…”