Bug FAQAulagromyza cornigera
Aulagromyza cornigera · Order: Diptera · Family: Agromyzidae
Source: Wikipedia
Aulagromyza cornigera larvae make white or greenish-white linear mines with dark lumps of frass on the upper leaf surface. They mine the leaves of honeysuckle (Lonicera) and snowberry (Symphoricarpos) plants. Larvae appear from late March through early June and the species has one generation per year.
Source: Wikipedia
How to recognize it
The mines are white or greenish-white lines with alternating black lumps of frass on the leaf’s upper side.
Source: Wikipedia
Where it lives
The larvae live inside leaves of plants in the Lonicera and Symphoricarpos genera.
Source: Wikipedia
What it eats
Larvae feed by mining the leaves of honeysuckle and snowberry species.
Source: Wikipedia
Life cycle
The species is univoltine, with one generation each year.
Source: Wikipedia
When you see it
Larvae can be found from late March until early June.
Source: Wikipedia
Where it comes from
It is native to Europe, ranging north to Norway and east to the Volga region of Russia.
Source: Wikipedia
Where it is found in the US
Recorded in 27 of 51 states and DC. Most records: Pennsylvania, New Jersey, Oregon, Minnesota, Maryland, Tennessee, Vermont, Washington.
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 plants are affected by Aulagromyza cornigera?
Its larvae mine the leaves of honeysuckle (Lonicera) and snowberry (Symphoricarpos).
Source: Wikipedia
When are the larvae present?
You can see larvae from late March through early June, as the species has one generation per year.
Source: Wikipedia
Same family (Agromyzidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Aulagromyza_cornigera
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-27 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-26.