By switching Papilio indra minori natural host Lomatium junceum with lab host Lomatium graveolens, you provide a double benefit.  First, Lomatium graveolens happens to be more accessible to Northern Utah folks who raise Papilio indra minori.  The second, and most important, value of this plant is that it grows in the tops of the Wasatch Mountains and is more succulent than L. junceum.  When caterpillars feed on healthy sprigs of this plant, it seems stimulate their pupae to NOT diapause as they perceive that somehow their 'natural' host is extremely succulent and healthy, encouraging a natural subsequent flight of P. indra minori.  In other words, their pupae do not diapause; but an adult butterfly emerges immediately.