Siphonoperla torrentium
In 3 days ~10% in a week ~20%
Siphonoperla torrentium is a species of European stoneflies in the family Chloroperlidae. This species is present in most of Europe (Austria, Belgium, Bosnia and Herzegovina, Great Britain, Croatia, Czech Republic, Finland, France, Germany, Hungary, Ireland, Italy, Republic of North Macedonia, Poland, Portugal, Slovakia, Spain, Switzerland, The Netherlands, Ukraine and former Yugoslavia) and in North America.
Siphonoperla torrentium can reach a body length of about 5–7 mm (0.20–0.28 in) in males, of about 5–8 mm (0.20–0.31 in) in females, with a wingspan of about of 13.6–15.4 mm (0.54–0.61 in) in males and of 15–17.5 mm (0.59–0.69 in) in females.
This species of stoneflies has one generation a year (univoltine). Larvae can reach a length of about 9 mm (0.35 in). They are yellowish to light brown in color and show clear bristles throughout. There are dark spots on the head and pronotum. The pronotum is transversely oval and has long bristles. Tracheal... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pyrénées National Park | 🇫🇷 France |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Small Yellow Sally sighting in Pyrénées National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 1026th most-seen of the 1277 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.
June
In that month about 10% of wildlife watchers report a Small Yellow Sally in Pyrénées National Park on a given day, against under 5% in July to May, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Small Yellow Sally sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Pyrénées National Park, in our data
Pyrénées National Park is the only park on Wallace's Line with enough records to rate Small Yellow Sally sightings: under 5% of wildlife watchers there report one on a given day.
Same order: Plecoptera
The closest relatives of the Small Yellow Sally that you can see in Pyrénées National Park (order Plecoptera, Stoneflies) are Large Stonefly (about 10%) and Perla marginata (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Small Yellow Sally is recorded against all the insects logged in Pyrénées National Park (6 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.
