Dryomyza anilis
In 3 days ~10% in a week ~30%
Dryomyza anilis is a common fly from the family Dryomyzidae. The fly is found through various areas in the Northern hemisphere and has brown and orange coloration with distinctive large red eyes. The life span of the fly is not known, but laboratory-reared males can live 28–178 days. D. anilis has recently been placed back in the genus Dryomyza, of which it is the type species. Dryomyzidae were previously part of Sciomyzidae but are now considered a separate family with two subfamilies.
Male D. anilis engage in territorial behavior, guarding carcasses to attract potential mates. Males also guard females, and conflicts over females are frequent. Females typically mate with multiple males. Mating occurs through several rounds of copulation and egg-laying. During mating, males engage in a series of "tapping" rituals where they use their claspers to tap the female's genitals, increasing the chance of them fertilizing the female's eggs. Females lay several batches of eggs on carcasses, fungi, and excrement as well as other substrates.
D. anilis adults are medium-sized, ranging in overall length from 7–14 mm, but are typically 12 mm long. Their coloration is light-brown... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | London | 🇬🇧 United Kingdom | |
| 4 | Toronto | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Hooded Dryomyza sighting in Helsinki on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 480th most-seen of the 838 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.
June and August
In those months about 10% of wildlife watchers report a Hooded Dryomyza in Helsinki on a given day, against under 5% in July and September–May, the lowest months.
Yes
Of the 4 cities where we can rate Hooded Dryomyza sightings, Helsinki has the highest daily chance: under 5%. Next come Birmingham (United Kingdom, under 5%) and London (United Kingdom, under 5%).
Same order: Diptera
The closest relatives of the Hooded Dryomyza that you can see in Helsinki (order Diptera, Flies) are Marmalade Hover Fly (about 20%), Sun Fly (about 20%) and Pellucid Hover Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Hooded Dryomyza is recorded against all the insects logged in Helsinki (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.
