Nemorimyza posticata
In 3 days ~10% in a week ~20%
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 Helsinki on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 665th most-seen of the 838 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.
July
In that month about 10% of wildlife watchers report a Nemorimyza posticata in Helsinki on a given day, against under 5% in August to June, the lowest months.
Yes
Of the 7 cities where we can rate Nemorimyza posticata sightings, Helsinki has the highest daily chance: under 5%. Next come 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 Helsinki (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.
