Redbud Leaffolder

The terms “leaffolder,” “leafroller,” and “leaftier” refer to the leaf structures produced by certain moth caterpillars. Leaffolders fold leaves, leafrollers roll leaves, and leaftiers tie leaves together. The descriptive terms have no relationship to moth taxonomy. They are intended to aid in identification by portraying the caterpillar’s creative use of silk to fashion a home.

Participants in the OGIA/OSU Greater Cincinnati BYGL! Diagnostic Walkabout held this past Monday at the Boone County Arboretum observed the unusual damage caused by the Redbud Leaffolder (Fascista cercerisella, family Gelechiidae) on its namesake host (Cercis canadensis). Populations of this native moth appear to be sporadic and highly localized in Ohio this season.

The unusual damage caused by first-generation Redbud Leaffolders on their namesake host is becoming evident in southwest Ohio. Thus far, populations of this native moth appear to be sporadic and highly localized. However, population densities and distribution may change with the appearances of the second and third generations.

The unusual damage caused by the native redbud leaffolder on its namesake host is becoming evident in southwest Ohio as caterpillars develop through the first generation. Thus far, populations appear to be sporadic and highly localized. However, population densities and distribution may change with the appearances of the second and third generations.

The unusual damage caused by the Redbud Leaffolder on its namesake host is becoming evident as caterpillars develop through the final generation this season. Populations are sporadic and highly localized with the most dramatic damage appearing on weeping redbuds.

Participants at last week's Greater Cincinnati Diagnostic Walk-About were thrilled to view the unusual leaf symptoms caused by the Redbud Leaffolder on its namesake host. Or, maybe it was just me who was thrilled. Most of the leaf damage this season is produced by the current 3rd generation caterpillars.

Although the growing season is winding down, Extension offices in Ohio are continuing to receive questions regarding redbud leaves turning brown after being folded over or "glued" together.  The culprit is the Redbud Leaffolder (Fascista cercerisella; order Lepidoptera; family Gelechiidae).