Macrostemum zebratum
In 3 days ~20% in a week ~30%
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 Minneapolis [Saint Paul] on a given day, based on 55 verified sightings from GBIF citizen-science data. It is the 169th most-seen of the 672 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
June to August
In those months about 10% of wildlife watchers report a Zebra Caddisfly in Minneapolis [Saint Paul] on a given day, against under 5% in September to May, the lowest months. Those are among Minneapolis [Saint Paul]'s wettest months, with about 110 mm of rain a month against 20 mm in January.
Among the best
Of the 2 cities where we can rate Zebra Caddisfly sightings, Minneapolis [Saint Paul] ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Montreal (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Zebra Caddisfly is recorded against all the insects logged in Minneapolis [Saint Paul] (55 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.
