However, this prediction is not supported by more robust sampling of taxa. Sensenig et al. [8] examined the web structure and silk biomechanics of 22 taxa of orb-web spiders that ranged almost two orders of magnitude in body size. They concluded that small orb-webs could rely primarily on individual threads to dissipate energy, not because they contained superior silk, but rather because the smaller insects that flew into those webs were easier to capture. Sensenig et al. [8] found a strong pattern of evolution between silk and web architecture where the biggest species of spiders repeatedly evolved better performing silks and relatively smaller, higher energy-absorbing webs, possibly to meet the challenges of dissipating the high kinetic energies of their larger prey. As web-building incurs significant material and energetic costs, selection should favour the most efficient web structures that provide the best possible return for a spider's investment [56,100]. Therefore, following from Craig's [4] hypothesis for a shift towards low-energy-absorbing webs, there must be some selective advantage to building webs that rely on the silk properties in localized areas of prey impact rather than on the web structure as a whole. Large spiders with high-energy-absorbing webs may be constrained to a limited range of web structures and hence microhabitats when compared with smaller spiders.