Is there correlation between photophobia and troglomorphism in Neotropical cave millipedes (Spirostreptida, Pseudonannolenidae)?

Absence of light, typical of the subterranean environment can lead to the loss of synchronizers of physiological and behavioral activities, mainly those related to photoperiods and light perception. Cave-dwelling species present phototactic responses that vary from photonegative to photopositive ones. There are few studies focusing on reaction to light in millipedes and the most studied species are considered photophobic. In this study, we...