Epitheca spinigera
In 3 days ~10% in a week ~20%
The spiny baskettail (Epitheca spinigera) is a dragonfly of the Corduliidae family. Flight season is late May to early July. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Riding Mountain National Park | 🇨🇦 Canada |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States | |
| 2 | Minneapolis [Saint Paul] | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Spiny Baskettail sighting in Portland on a given day, based on 24 verified sightings from GBIF citizen-science data. It is the 281st most-seen of the 507 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.
May and June
In those months about 10% of wildlife watchers report a Spiny Baskettail in Portland on a given day, against under 5% in July to April, the lowest months. Those are among Portland's driest months, with about 65 mm of rain a month against 250 mm in December.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Spiny Baskettail sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 cities where we can rate Spiny Baskettail sightings, Portland has the highest daily chance: under 5%. Next come Minneapolis [Saint Paul] (United States, under 5%).
Same order: Odonata
The closest relatives of the Spiny Baskettail that you can see in Portland (order Odonata, Dragonflies and Damselflies) are Common Whitetail (about 20%), Pacific Forktail (about 20%) and Flame Skimmer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spiny Baskettail is recorded against all the insects logged in Portland (24 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.
