Grousewing Caddisfly

Grousewing Caddisfly

Mystacides longicornis

Daily sighting probability <5% · Rare
at Warsaw

In 3 days ~10% in a week ~30%

7 Verified sightings at Warsaw
14 In 1 park From 2019 to 2026
May Best month
🌙 Nocturnal When it's spotted

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Wadden Sea National Park 🇩🇪 Germany
<5%

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Liverpool 🇬🇧 United Kingdom
~20%
2 Birmingham 🇬🇧 United Kingdom
~10%
3 London 🇬🇧 United Kingdom
~10%
4 Rotterdam [The Hague] 🇳🇱 Netherlands
~10%
5 Manchester 🇬🇧 United Kingdom
~10%
6 Minsk 🇧🇾 Belarus
~10%
7 Dublin 🇮🇪 Ireland
<5%
8 Warsaw 🇵🇱 Poland
<5%
9 Kyiv 🇺🇦 Ukraine
<5%
10 Copenhagen 🇩🇰 Denmark
<5%

Before you go

What are the chances of seeing a Grousewing Caddisfly in Warsaw?

Rare

Under 5% of wildlife watchers report a Grousewing Caddisfly sighting in Warsaw on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 460th most-seen of the 580 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.

When is the best time to see a Grousewing Caddisfly in Warsaw?

May

In that month about 10% of wildlife watchers report a Grousewing Caddisfly in Warsaw on a given day, against under 5% in June to April, the lowest months. That is one of Warsaw's wettest months, with about 75 mm of rain against 40 mm in February.

What time of day is best to see a Grousewing Caddisfly?

Between 10 pm and 1 am

Across all the parks we cover, that three-hour window holds the most Grousewing Caddisfly sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.

Is Warsaw the best place to see a Grousewing Caddisfly?

8th of 13

Of the 13 cities where we can rate Grousewing Caddisfly sightings, Warsaw ranks 8th at under 5%. The best odds are in Liverpool (United Kingdom, about 20%), Birmingham (United Kingdom, about 10%) and London (United Kingdom, about 10%).

Where does the Grousewing Caddisfly sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Grousewing Caddisfly is recorded against all the insects logged in Warsaw (7 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.

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