Neotoxoptera formosana
In 3 days ~10%
Neotoxoptera formosana, the onion aphid, is an aphid in the order Hemiptera. It was originally discovered in Taiwan in 1921, but has spread all around the world. The aphid is dark reddish brown in color. Host plants include Allium ascalonicum, Allium cepa, Allium chinense, Allium fistulosum, Allium porrum, Allium sativum, Allium schoenoprasum, and Allium tuberosum.
The aphid is a carrier of garlic latent potyvirus and alstroemeria mosaic potyvirus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Onion Aphid sighting in Los Angeles on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 568th most-seen of the 851 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an Onion Aphid in Los Angeles on a given day, so our monthly data shows no clear season.
Only Los Angeles, in our data
Los Angeles is the only city on Wallace's Line with enough records to rate Onion Aphid sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Onion Aphid is recorded against all the insects logged in Los Angeles (10 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.
