Bug FAQSumitrosis inaequalis
Sumitrosis inaequalis · Order: Coleoptera · Family: Chrysomelidae
Source: Wikipedia
Adults are tiny, about 3.4 to 4.2 mm long. Their colour varies widely, from pale yellow with faint black marks to almost black with yellow spots (-). They live in Central and North America, recorded across many Canadian provinces and U.S. states.
Source: Wikipedia
Size
Adults are about 3.4 to 4.2 mm long.
Source: Wikipedia
Where it is found in the US
Recorded in 39 of 51 states and DC. Most records: Massachusetts, Pennsylvania, New York, Texas, Ohio, North Carolina, Kentucky, Virginia.
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 does Sumitrosis inaequalis affect?
Its larvae mine the leaves of Eurybia divaricata, Symphyotrichum cordifolium, and Ambrosia artemisiifolia.
Source: Wikipedia
Where can I find this beetle?
It occurs throughout Central America and across Canada and the United States, in many provinces and states.
Source: Wikipedia
Same family (Chrysomelidae)
Spotted Cucumber BeetleDiabrotica undecimpunctataDamages trees, gardens or crops
Bean WeevilAcanthoscelides obtectusDamages trees, gardens or crops
Cowpea WeevilCallosobruchus maculatusDamages trees, gardens or crops
Swamp Milkweed Leaf BeetleLabidomera clivicollisDamages trees, gardens or crops
Alder Leaf BeetleAgelastica alniDamages trees, gardens or crops
Dogbane Leaf BeetleChrysochus auratusSources
- Wikipedia: https://en.wikipedia.org/wiki/Sumitrosis_inaequalis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.