Black-Horned Gem Fly

Black-Horned Gem Fly

Microchrysa polita

Daily sighting probability <5% · Rare
at Paris

In 3 days ~10% in a week ~20%

7 Verified sightings at Paris
May Best month

About the Black-Horned Gem Fly

Microchrysa polita, the black-horned gem, is a species of soldier fly found in Europe, Asia, and North America. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Birmingham 🇬🇧 United Kingdom
~10%
2 Brussels 🇧🇪 Belgium
~10%
3 Liverpool 🇬🇧 United Kingdom
~10%
4 London 🇬🇧 United Kingdom
<5%
5 Helsinki 🇫🇮 Finland
<5%
6 Kyiv 🇺🇦 Ukraine
<5%
7 Baltimore 🇺🇸 United States
<5%
8 Vienna 🇦🇹 Austria
<5%
9 Edmonton 🇨🇦 Canada
<5%
10 Paris 🇫🇷 France
<5%

Before you go

What are the chances of seeing a Black-Horned Gem Fly in Paris?

Rare

Under 5% of wildlife watchers report a Black-Horned Gem Fly sighting in Paris on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 686th most-seen of the 916 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.

When is the best time to see a Black-Horned Gem Fly in Paris?

May

In that month about 10% of wildlife watchers report a Black-Horned Gem Fly in Paris on a given day, against under 5% in June to April, the lowest months.

Is Paris the best place to see a Black-Horned Gem Fly?

10th of 17

Of the 17 cities where we can rate Black-Horned Gem Fly sightings, Paris ranks 10th at under 5%. The best odds are in Birmingham (United Kingdom, about 10%), Brussels (Belgium, about 10%) and Liverpool (United Kingdom, about 10%).

Which relatives of the Black-Horned Gem Fly live in Paris?

Same family: Stratiomyidae

The closest relatives of the Black-Horned Gem Fly that you can see in Paris (family Stratiomyidae, Soldier Flies) are Black Soldier Fly (about 10%), Broad Centurion Fly (about 10%) and Actina chalybea (about 10%), with each one's daily chance of a sighting.

Where does the Black-Horned Gem Fly sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Black-Horned Gem Fly is recorded against all the insects logged in Paris (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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