Found in cocoons nestled between sepals and fruit of Mimulus ringens fruits in a wetland habitat. Most cocoons had red pupae. Cocoons are usually attached side-by-side to one another like a bandelier, typically 5-6 in a row, but up to 14 at times. Small exit holes often occur in the fruit and sometimes the sepals, and in occupied fruits some groups of 3-8 seeds clump together, though I could not see any sign of seed damage.