Predicted linear relationship (solid line) and 95% confidence interval (grey shading) between biogeographic features and troglomorphic traits in Typhlonesticus (all species), derived from the linear mixed model. Regression statistics for each regression are reported lower right. Femur I elongation is expressed as the ratio of the length of the femur I to the body size of females, the diameter of anterior median eyes is in mm. Extent of occurrence and altimetric range are Log transformed. Species abbreviations: Tobc = T. obcaecatus; Tmor = T. morisii; Tgoc = T. gocmeni; Tsan = T. santinellii; Tpar = T. parvus; Tabs = T. absoloni; Tang = T. angelicus; Tidr = T. idriacus; Tsil = T. silvestrii.