Bug FAQDuckweed Weevil
Tanysphyrus lemnae · Order: Coleoptera · Family: Brachyceridae
The duckweed weevil lives in Europe and North America. Its larvae mine the leaves of duckweed plants (genus Lemna).
Source: Wikipedia
Where it lives
The species is found where duckweed grows, because its larvae live inside duckweed leaves.
Source: Wikipedia
What it eats
The larvae feed by mining the leaves of duckweed (Lemna).
Source: Wikipedia
Where it comes from
It is native to Europe and also to North America.
Source: Wikipedia
Where it is found in the US
Recorded in 26 of 51 states and DC. Most records: New York, Michigan, Florida, Louisiana, Texas, Kansas, Massachusetts, North Carolina.
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 do duckweed weevil larvae eat?
The larvae mine and eat the leaves of duckweed plants (genus Lemna).
Source: Wikipedia
Same family (Brachyceridae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Tanysphyrus_lemnae
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-26 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-26.