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 Boston on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 668th 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 a Nemorimyza posticata in Boston 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, Boston ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Helsinki (Finland, under 5%) and New York City (United States, under 5%).
Same family: Agromyzidae
The closest relatives of the Nemorimyza posticata that you can see in Boston (family Agromyzidae, Leaf-miner Flies) are Agromyza vockerothi (about 10%) and Jewelweed Leaf-Miner Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Nemorimyza posticata is recorded against all the insects logged in Boston (13 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.
