Phyllonorycter tritaenianella
In 3 days ~10% in a week ~20%
Phyllonorycter tritaenianella is a moth of the family Gracillariidae. It is known from Québec in Canada and Illinois, Kentucky, Maine, Michigan, New York, Connecticut and Massachusetts in the United States. The wingspan is 7–8 mm.
The larvae feed on Ostrya species, including Ostrya virginiana and Ostrya virginica. They mine the leaves of their host plant. The mine has the form of a rather large roundish blotch mine on the upperside of the leaf. At first the mine is a flat blotch, and the loosened epidermis is white, sparsely speckled with brown. Later, by contraction of the epidermis, the mine becomes roomy and tentiform and the leaf is completely folded over. The larva is green and of the cylindrical type, and spins a thin ovoid silken cocoon, fastened to the leaf above and below. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Phyllonorycter tritaenianella sighting in Boston on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 967th 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 Phyllonorycter tritaenianella in Boston on a given day, so our monthly data shows no clear season.
Only Boston, in our data
Boston is the only city on Wallace's Line with enough records to rate Phyllonorycter tritaenianella sightings: under 5% of wildlife watchers there report one on a given day.
Same genus: Phyllonorycter
The closest relatives of the Phyllonorycter tritaenianella that you can see in Boston (genus Phyllonorycter) are Basswood Miner Moth (about 10%) and Basswood Round-Blotch Miner Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Phyllonorycter tritaenianella is recorded against all the insects logged in Boston (7 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.
