Macrostemum zebratum
In 3 days ~30% in a week ~50%
Macrostemum zebratum, the zebra caddisfly, is a species of netspinning caddisfly in the family Hydropsychidae. It is found in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Montreal | 🇨🇦 Canada | |
| 2 | Minneapolis [Saint Paul] | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Zebra Caddisfly sighting in Montreal on a given day, based on 216 verified sightings from GBIF citizen-science data. It is the 55th most-seen of the 926 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Zebra Caddisfly in Montreal on a given day, against under 5% in September to May, the lowest months.
Yes
Of the 2 cities where we can rate Zebra Caddisfly sightings, Montreal has the highest daily chance: about 10%. Next come Minneapolis [Saint Paul] (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Zebra Caddisfly is recorded against all the insects logged in Montreal (216 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.
