The predominant cold-evoked behavior is CT, a behavior conserved from a common ancestor but with no obvious correlation to thermal environment
Heatmap representation of % CT by species and temperature. All species CT, but with slightly different cold sensitivities. N = 2,970, n = 30 for each condition, each referring to the number of larvae assayed. % of larvae which performed CT out of the total intraspecies population was color-mapped to the tree by maximum likelihood ancestral state estimation (color at tip indicates value for that species). Blomberg's K (Blomberg et al., 2003) and Pagel's λ (Pagel, 1999) show no evidence of phylogenetic signal.