Chalcolestes parvidens
In 3 days ~10% in a week ~30%
Chalcolestes parvidens, formerly Lestes parvidens, is a damselfly of the family Lestidae. It has a metallic green body and at rest it holds its wings away from its body. Its common name in English is the eastern willow spreadwing.
The genus Chalcolestes is separated from Lestes because of differences in their larvae. C. parvidens is closely related to C. viridis and used to be considered a subspecies of C. viridis, however there are small morphological differences between the two species both as adults and larvae and analysis of proteins from the two species, by electrophoresis, also supports their separation into two species, but they are hard to tell apart in the field.
Chalcolestes parvidens is found in eastern and central Europe, in Croatia, Bulgaria, Greece, Italy, Syria, Jordan, Israel and Turkey. It is found on islands in the eastern Mediterranean; on Cyprus, Corsica, Crete and Sicily. In Italy and the Balkans both C. parvidens and C. viridis occur together. It is only in the last 20 years that odonaterists have been separating C. parvidens from C. viridis so some of the older records for C. viridis will probably be for C. parvidens... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rostov-on-Don | 🇷🇺 Russia | |
| 2 | Istanbul | 🇹🇷 Turkey | |
| 3 | Budapest | 🇭🇺 Hungary | |
| 4 | Bucharest | 🇷🇴 Romania |
Rare
Under 5% of wildlife watchers report an Eastern Willow Spreadwing sighting in Bucharest on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 303rd most-seen of the 361 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 to September
In those months about 10% of wildlife watchers report an Eastern Willow Spreadwing in Bucharest on a given day, against under 5% in October to May, the lowest months.
4th of 4
Of the 4 cities where we can rate Eastern Willow Spreadwing sightings, Bucharest ranks 4th at under 5%. The best odds are in Rostov-on-Don (Russia, about 20%), Istanbul (Turkey, about 10%) and Budapest (Hungary, about 10%).
GBIF citizen-science records
It is estimated from how often the Eastern Willow Spreadwing is recorded against all the insects logged in Bucharest (5 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.
