Coenosia attenuata
In 3 days ~20% in a week ~40%
Coenosia attenuata (also sometimes cited as Coenosia attenuate), commonly called "hunter fly" or well known under the name "killer fly", is a predatory fly belonging to the family Muscidae. This species is native to Southern Europe, where it is present in Spain, France, Italy, Germany and Greece. It has now a worldwide distribution and it can also be found in the Afrotropical realm, in the Australasian realm, in the East Palearctic realm, in the Near East, in the Nearctic realm, in the Neotropical realm, in North Africa and in the Oriental realm.
It was first discovered in the United States in 2001 by an Integrated Pest Management scout in a greenhouse in New York State. It has since been found throughout North and South America. Adults of Coenosia attenuata can reach a length of 2.5–4 millimetres (0.098–0.157 in). These tiny killer flies have a pale brownish or greyish body, with big reddish eyes. Antennae and legs are yellow in males. Females have brownish frons, with a golden ocellar triangle. Antennae and femora are black and the abdomen shows distinct black bands, that are missing in the males.
Coenosia attenuata is a very effective... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tel Aviv | 🇮🇱 Israel |
With luck
About 10% of wildlife watchers report a Coenosia attenuata sighting in Tel Aviv on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 148th most-seen of the 264 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April
In that month about 20% of wildlife watchers report a Coenosia attenuata in Tel Aviv on a given day, against under 5% in March and June–January, the lowest months.
Only Tel Aviv, in our data
Tel Aviv is the only city on Wallace's Line with enough records to rate Coenosia attenuata sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Muscidae
The closest relatives of the Coenosia attenuata that you can see in Tel Aviv (family Muscidae, House Flies and Allies) are Common House Fly (about 10%), Limnophora obsignata (about 10%) and Dog Dung Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Coenosia attenuata is recorded against all the insects logged in Tel Aviv (10 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.
