“…Therefore, body size is a proxy measure of fitness (Jakob, Marshall, & Uetz, ; Sokolovska, Rowe, & Johansson, ). A direct relationship between body size and reproductive success has been demonstrated in a number of spider species (Marshall & Gittleman, ), including wolf spiders (Ameline et al, ; Anderson, ; Uetz, Papke, & Kilinc, ). We also measured egg‐case (cocoon) size, another indirect measure of fitness (Bowden, Høye, & Buddle, ; Marshall & Gittleman, ).…”