Bug FAQMarmara fraxinicola
Marmara fraxinicola · Order: Lepidoptera · Family: Gracillariidae
Source: Wikipedia
Its larvae feed inside the stems of American ash (Fraxinus americana) and green ash (Fraxinus pennsylvanica), causing damage to the trees. The species produces one generation each year.
Source: Wikipedia
What it eats
Larvae mine the stems of Fraxinus americana and Fraxinus pennsylvanica.
Source: Wikipedia
Life cycle
There is one generation per year.
Source: Wikipedia
Where it is found in the US
Recorded in 15 of 51 states and DC. Most records: Massachusetts, Pennsylvania, North Carolina, New York, Minnesota, New Hampshire, Ohio, Vermont.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
What trees does Marmara fraxinicola affect?
Its larvae mine the stems of American ash (Fraxinus americana) and green ash (Fraxinus pennsylvanica).
Source: Wikipedia
Same family (Gracillariidae)
Horse-chestnut LeafminerCameraria ohridellaDamages trees, gardens or crops
Aspen Serpentine Leafminer MothPhyllocnistis populiellaDamages trees, gardens or crops
Phyllocnistis vitegenella complexPhyllocnistis vitegenellaDamages trees, gardens or crops
Locust Digitate Leafminer MothParectopa robiniellaDamages trees, gardens or crops
Poison Ivy Leaf-miner MothCameraria guttifinitella
Phyllocnistis insignisDamages trees, gardens or cropsSources
- Wikipedia: https://en.wikipedia.org/wiki/Marmara_fraxinicola
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.