Selidosema brunnearia
In 3 days ~10% in a week ~20%
Selidosema brunnearia, the bordered grey, is a moth of the family Geometridae. The species was first described by Charles Joseph Devillers in 1789. It is found in central and southern Europe, Asia Minor, Transcaucasia and North Africa.
The wingspan is 37–43 mm. It is brown or purple brown with dark discal dots or spots, the lines and distal band usually indicated on the forewing, but very variably, the lines wanting on the hindwing. Female much smaller-winged than male, with stout abdomen, moderately well marked. - pyrenaearia Boisduval, 1840 has a very strongly expressed dark median line but the dark marginal band obsolescent. Pyrenees and Spain. - pallidaria Staudinger, 1901 is a very weakly marked, cinereous whitish form from Sicily, Dalmatia, etc.- syriacaria Staudinger shows a similar pale ground colour but the discal spots, median line of forewing and submarginal bands are well developed. Syria. - scandinaviaria Stgr. is dark violet-grey, the median line present, the distal bands broad. Scandinavia. -oelandica Wahlgren is a modification of the preceding, perhaps less dark grey, with an additional dark band occupying the entire space between median and postmedian... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Bordered Grey sighting in Cévennes National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 996th most-seen of the 996 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.
September
In that month about 10% of wildlife watchers report a Bordered Grey in Cévennes National Park on a given day, against under 5% in October to August, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Bordered Grey sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Cévennes National Park, in our data
Cévennes National Park is the only park on Wallace's Line with enough records to rate Bordered Grey sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Bordered Grey that you can see in Cévennes National Park (family Geometridae, Geometer Moths) are Willow Beauty (about 20%), Portland Ribbon Wave (about 10%) and Chimney-Sweeper (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bordered Grey is recorded against all the insects logged in Cévennes 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.
