Nemorimyza posticata
In 3 days ~10%
Nemorimyza posticata is a species of fly in the family Agromyzidae. It is found in the Palearctic. Interocular space matte black. Lunule soft black. Antennae and palps black. Mesonotum brilliant black. Acrostichal bristles sparse and in 7-8 rows. Legs brownish black all the knees yellow. Haltere knob whitish yellow. Female: abdomen black, les the two last segments clear brown. Male: The base of the abdomen more or less dark, the rest yellow. Length: 2,5–3 mm.
The larva mines Solidago, Aster, Baccharis, and Erechtites. Images representing Nemorimyza posticata at BOLD Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | New York City | 🇺🇸 United States | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Philadelphia | 🇺🇸 United States | |
| 5 | Washington | 🇺🇸 United States | |
| 6 | Toronto | 🇨🇦 Canada | |
| 7 | Chicago | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Nemorimyza posticata sighting in Chicago on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 884th most-seen of the 978 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 a Nemorimyza posticata in Chicago on a given day, so our monthly data shows no clear season.
Among the best
Of the 7 cities where we can rate Nemorimyza posticata sightings, Chicago ranks 7th at under 5%, level with the leaders once rounded. The best odds are in Helsinki (Finland, under 5%), New York City (United States, under 5%) and Boston (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Nemorimyza posticata is recorded against all the insects logged in Chicago (6 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.
