exyra moth on Pitcher Plant Sarracenia
Quick answer
If your Pitcher Plant Sarracenia has exyra moth, the most likely cause is: Exyra moths (E. rolandiana, E. ridingsii, and E. semicrocea) are pitcher-specific insects whose small purple-and-white striped larvae feed and pupate inside Sarracenia pitchers. A single female lays only one orange egg per pitcher, but the larva feeds on the inside layer of the pitcher until the weakened top collapses, blocks other moths from entering, and the larva may move between pitchers on the same plant, also damaging flowers and eating seeds. A Florida study of E. semicrocea on Hooded Pitcher found it had rendered two-thirds of the leaves non-functional, with young larvae in over one-fifth of the remaining intact pitchers.
Start here:
- 1. Trim off and destroy old, shrivelled pitchers at the end of the growing season, including any that still contain overwintering Exyra moths or pupae, to break the life cycle before adults emerge.
- 2. Hand-remove visible larvae and silk-closed pitchers early in the season before the larvae move on to damage additional pitchers on the same plant.
Why Pitcher Plant Sarracenia gets exyra moth
Pitcher Plant Sarracenia
Exyra moths (E. rolandiana, E. ridingsii, and E. semicrocea) are pitcher-specific insects whose small purple-and-white striped larvae feed and pupate inside Sarracenia pitchers. A single female lays only one orange egg per pitcher, but the larva feeds on the inside layer of the pitcher until the weakened top collapses, blocks other moths from entering, and the larva may move between pitchers on the same plant, also damaging flowers and eating seeds. A Florida study of E. semicrocea on Hooded Pitcher found it had rendered two-thirds of the leaves non-functional, with young larvae in over one-fifth of the remaining intact pitchers.
How to reverse exyra moth on Pitcher Plant Sarracenia
- 1
Trim off and destroy old, shrivelled pitchers at the end of the growing season, including any that still contain overwintering Exyra moths or pupae, to break the life cycle before adults emerge.
- 2
Hand-remove visible larvae and silk-closed pitchers early in the season before the larvae move on to damage additional pitchers on the same plant.
- 3
Encourage winter fires or controlled prescribed burns in wild Sarracenia stands, since winter burns cut Exyra populations that overwinter in dead pitchers from the previous season.
- 4
Plant only outside the natural range of native Sarracenia where the moth is not endemic, removing the reservoir of breeding adults.
Keep exyra moth off this Pitcher Plant Sarracenia
Keep the planting clean by cutting away dead pitchers each winter, monitor developing pitchers for silk webs and small orange eggs during spring, and avoid introducing Sarracenia divisions or seed from wild-collected populations that may carry Exyra eggs or larvae inside the pitcher tissue.