Stilbosis ostryaeella
(Chambers, 1874)
ironwood leafminer moth, ironwood leafminer
Stilbosis ostryaeella is a small in the Cosmopterigidae. Its larvae are leafminers specialized on ironwood (Ostrya virginiana), creating distinctive blotch mines between leaf . The is distributed across eastern North America, with active from late spring through summer. It overwinters as a pupa in leaf litter.
Pronunciation
How to pronounce Stilbosis ostryaeella: /stɪlˈboʊsɪs ɒˌstraɪəˈɛlə/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
The is recognized by its association with ironwood (Ostrya virginiana) and the distinctive blotch-shaped leaf mines created by larvae between two lateral . The mine pattern distinguishes it from other leafminers on the same . are small and require dissection or molecular analysis for definitive identification from related Stilbosis species.
Habitat
Deciduous forests and woodlands where ironwood (Ostrya virginiana) occurs, typically in moist to mesic sites with well-drained soils.
Distribution
Eastern North America: recorded from Quebec and Ontario in Canada; in the United States from Maine, Massachusetts, Maryland, Ohio, Kentucky, Illinois, Arkansas, and Florida.
Seasonality
active from May to August. Overwinters in the pupal stage.
Diet
Larvae feed exclusively on Ostrya virginiana (ironwood, hophornbeam), mining the leaves. do not feed; their diet is unknown.
Host Associations
- Ostrya virginiana - obligate larval larvae mine leaves between two lateral
Life Cycle
and early larval stages occur within ironwood leaves. Larvae create blotch mines between lateral , then exit full-grown and drop to the ground. occurs in a silken cocoon spun in leaf litter. The overwinters in the pupal stage.
Behavior
Larvae are endophagous leafminers that construct blotch mines between leaf rather than linear mines. Full-grown larvae actively leave mines and descend to the ground for .
Ecological Role
As a leafminer, it contributes to nutrient cycling in ironwood-dominated and serves as a food source for and .
Human Relevance
Minor economic significance; occasional pest of ornamental ironwood trees. Used as an for intact ironwood in forest surveys.
Similar Taxa
- Other Stilbosis speciesMany are morphologically similar; require genitalia dissection or association for separation. S. ostryaeella is distinguished by its exclusive association with Ostrya virginiana.
- Other leafmining Lepidoptera on OstryaOther miners on ironwood create different mine patterns (e.g., linear rather than blotch mines between ).