The yucca moth Prodoxus y-inversus Riley (Lepidoptera: Prodoxidae) has the longest reported diapause. [...] Diapause, as defined by Tauber et al. (1986), is a neurohormonally mediated, dynamic state of low activity that occurs during a genetically determined stage(s) of metamorphosis, usually in response to environmental stimuli that precede unfavorable conditions.