Coloburiscus humeralis
In 3 days ~60% in a week ~90%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Egmont National Park | 🇳🇿 New Zealand | |
| 2 | Fiordland National Park | 🇳🇿 New Zealand |
Possible
About 30% of wildlife watchers report a Spinygilled Mayfly sighting in Egmont National Park on a given day, based on 47 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 2nd most-seen of the 191 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
May and November
In those months about 40% of wildlife watchers report a Spinygilled Mayfly in Egmont National Park on a given day, against under 5% in July, the lowest month.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Spinygilled Mayfly sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Spinygilled Mayfly sightings, Egmont National Park has the highest daily chance: about 30%. Next come Fiordland National Park (New Zealand, about 10%).
Same order: Ephemeroptera
The closest relatives of the Spinygilled Mayfly that you can see in Egmont National Park (order Ephemeroptera, Mayflies) are Ameletopsis perscitus (about 20%), Acanthophlebia cruentata (about 10%) and Deleatidium magnum (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spinygilled Mayfly is recorded against all the insects logged in Egmont National Park (47 verified sightings from 2019 to 2026), 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.
