Phytomyza syngenesiae
In 3 days ~10% in a week ~20%
Chromatomyia syngenesiae, the ragwort leaf miner or chrysanthemum leaf miner, also known by the synonym Phytomyza syngenesiae, is a Palaearctic fly, also present in Australia and New Zealand, with larvae that make leaf mines in Senecio species and other related herbaceous daisies. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Auckland | 🇳🇿 New Zealand | |
| 2 | Seattle | 🇺🇸 United States | |
| 3 | Sydney | 🇦🇺 Australia | |
| 4 | San Francisco | 🇺🇸 United States | |
| 5 | San Diego | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Chrysanthemum Leafminer sighting in Sydney on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 520th most-seen of the 742 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 a Chrysanthemum Leafminer in Sydney on a given day, so our monthly data shows no clear season.
Among the best
Of the 5 cities where we can rate Chrysanthemum Leafminer sightings, Sydney ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Auckland (New Zealand, under 5%) and Seattle (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Chrysanthemum Leafminer is recorded against all the insects logged in Sydney (8 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.
