Aedes japonicus
In 3 days ~10% in a week ~20%
Aedes japonicus, commonly known as the Asian bush mosquito or the Asian rock pool mosquito, was first described by Theobald in 1901 from Tokyo, Japan. They are competent arbovirus vectors known to transmit the West Nile virus as well as Japanese and St. Louis encephalitis. They are listed as an invasive species by the Global Invasive Species Database.
Adults live in forested areas and are day biters, but are apparently reluctant to bite humans. In the laboratory, they feed on chicks and mice but not on reptiles or amphibians. Larvae occur in a wide variety of natural and artificial water retainers such as tree holes and rock holes, usually preferring shaded places and water rich in organic matter. They are found from early spring to early autumn in their native habitat of Central Japan. They overwinter as eggs in cooler regions and larvae in warmer regions.
Adults have a distinctive bronze-colored... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada | |
| 2 | Baltimore | 🇺🇸 United States | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Montreal | 🇨🇦 Canada | |
| 5 | Vienna | 🇦🇹 Austria | |
| 6 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 7 | Washington | 🇺🇸 United States | |
| 8 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Asian Bush Mosquito sighting in Boston on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 612th most-seen of the 1200 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 Bush Mosquito in Boston on a given day, so our monthly data shows no clear season.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Asian Bush Mosquito sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 8 cities where we can rate Asian Bush Mosquito sightings, Boston ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Toronto (Canada, under 5%) and Baltimore (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Asian Bush Mosquito is recorded against all the insects logged in Boston (15 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.
