Bug FAQPotato Gall Midge
Rabdophaga salicisbatatas · Order: Diptera · Family: Cecidomyiidae
Also called: Willow Rosette Gall Midge, willow potatogall midge
The potato-gall midge (Rabdophaga salicisbatatus) makes stem galls on willow plants in North America. It is also called the tuber-gall midge and lives on members of the willow family.
Source: Wikipedia
How to recognize it
Rabdophaga salicisbatatus is the scientific name for the potato-gall midge. It is also known as the tuber-gall midge.
Source: Wikipedia
Where it lives
This midge creates stem galls on willow plants.
Source: Wikipedia
What it eats
Its larvae feed inside the galls they induce on willow stems.
Source: Wikipedia
Where it comes from
It occurs on North American willow species.
Source: Wikipedia
Where it is found in the US
Recorded in 15 of 51 states and DC. Most records: California, Minnesota, Alaska, Vermont, New York, Wisconsin, Oregon, Illinois.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
What plants does the potato-gall midge affect?
It induces stem galls on plants in the willow family.
Source: Wikipedia
Same family (Cecidomyiidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Rabdophaga_salicisbatatus
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-26 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-26.