Sky-island-endemic
Guides
Neophasia terlooii
Chiricahua White, Chiricahua Pine White, Mexican Pine White
Neophasia terlooii is a butterfly in the family Pieridae endemic to the sky islands of southeastern Arizona and Mexico. Males are white with black markings while females are orange with black wing veins, exhibiting pronounced sexual dimorphism. The species has two generations annually, with a small summer brood and larger fall population. Larvae feed on conifers, specifically Ponderosa Pine and Engelmann Spruce, and eggs are laid exposed on pine needles where they overwinter in a desiccation-resistant quiescent state.