Chrysops relictus
In 3 days ~10% in a week ~20%
Chrysops relictus, the twin-lobed deerfly, is a largish European and Asian deerfly of about 8–10.5 millimetres (0.31–0.41 in) length. The larvae feed upon organic matter in damp soils, and are termed hydrobionts in that they inhabit areas of high water content. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany | |
| 2 | Pyrénées National Park | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Twin-Lobed Deer Fly sighting in Moscow on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 581st most-seen of the 1111 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Twin-Lobed Deer Fly in Moscow on a given day, so our monthly data shows no clear season.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Twin-Lobed Deer Fly sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 5
Of the 5 cities where we can rate Twin-Lobed Deer Fly sightings, Moscow ranks 5th at under 5%. The best odds are in Amsterdam (Netherlands, about 10%), Kyiv (Ukraine, under 5%) and Helsinki (Finland, under 5%).
GBIF citizen-science records
It is estimated from how often the Twin-Lobed Deer Fly is recorded against all the insects logged in Moscow (14 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.
