Demotina modesta
In 3 days ~10% in a week ~20%
Demotina modesta is a species of leaf beetle. It is an adventive species in the southeastern United States in North America, while its native range includes Japan and Korea. It is very abundant on oaks. It is known to be parthenogenetic in part of its native range, and no males are known from North America.
Demotina modesta is a summer breeder and probably hibernates as larvae or pupae. It lays eggs singly on the undersides of leaves and covers them with excrement. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Washington | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Asian Oak Leaf Beetle sighting in Washington on a given day, based on 26 verified sightings from GBIF citizen-science data. It is the 722nd most-seen of the 1807 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an Asian Oak Leaf Beetle in Washington on a given day, so our monthly data shows no clear season.
Only Washington, in our data
Washington is the only city on Wallace's Line with enough records to rate Asian Oak Leaf Beetle sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Chrysomelidae
The closest relatives of the Asian Oak Leaf Beetle that you can see in Washington (family Chrysomelidae, Leaf Beetles) are Spotted Cucumber Beetle (about 10%), Swamp Milkweed Leaf Beetle (about 10%) and Dogbane Leaf Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Asian Oak Leaf Beetle is recorded against all the insects logged in Washington (26 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
