Bug FAQGrape Colaspis
Colaspis brunnea · Order: Coleoptera · Family: Chrysomelidae
Source: Wikipedia
The grape colaspis is a small brown leaf beetle about 5 mm long, with parallel rows of puncture marks on its wing covers. It lives in the eastern United States, overwinters as a larva in the soil, and has one generation per year.
Source: Wikipedia
How to recognize it
The beetle’s elytra show several parallel rows of small puncture marks.
Source: Wikipedia
Size
Adults are brown and about 5 mm long. Late-instar larvae are white-grey with orange head capsules and measure 5 to 6.5 mm.
Source: Wikipedia
Is it a pest in the house?
It is a pest of crops like corn and soybeans, but damage to stored food or homes has not been reported.
Source: Wikipedia
Where it lives
It is found mainly in the eastern United States.
Source: Wikipedia
What it eats
It feeds on crops such as corn and soybeans, though it is not considered a major economic pest.
Source: Wikipedia
Life cycle
The beetle has one generation per year and overwinters in the soil as larvae.
Source: Wikipedia
Where it comes from
The species is native to North America, especially the eastern United States.
Source: Wikipedia
Where it is found in the US
Recorded in 37 of 51 states and DC. Most records: Kentucky, Virginia, North Carolina, Tennessee, Illinois, Maryland, Pennsylvania, Texas.
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 the grape colaspis damage?
It feeds on corn and soybeans, though it rarely causes serious crop loss.
Source: Wikipedia
How many generations does it have each year?
It is univoltine, producing one generation per year.
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/Colaspis_brunnea
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.