Caloptilia fraxinella
In 3 days ~10% in a week ~20%
Caloptilia fraxinella (ash leaf cone roller moth) is a moth of the family Gracillariidae. It is known from Canada (Québec, Alberta, Ontario and Saskatchewan) and the United States (Michigan, Vermont, Ohio, Connecticut, New York and Maine).
It is considered a significant pest of horticultural ash. The larvae feed on Fraxinus species (including Fraxinus americana, Fraxinus mandshurica, Fraxinus nigra and Fraxinus pennsylvanica) and Ligustrum species. They mine the leaves of their host plant. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Ash Leaf Cone Roller sighting in Calgary on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 203rd most-seen of the 256 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 an Ash Leaf Cone Roller in Calgary on a given day, so our monthly data shows no clear season.
2nd of 3
Of the 3 cities where we can rate Ash Leaf Cone Roller sightings, Calgary ranks 2nd at under 5%. The best odds are in Edmonton (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Ash Leaf Cone Roller is recorded against all the insects logged in Calgary (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.
