Chalcolestes parvidens
In 3 days ~40% in a week ~70%
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 |
Possible
About 20% of wildlife watchers report an Eastern Willow Spreadwing sighting in Rostov-on-Don on a given day, based on 22 verified sightings from GBIF citizen-science data. It is the 10th most-seen of the 35 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
August
In that month about 50% of wildlife watchers report an Eastern Willow Spreadwing in Rostov-on-Don on a given day, against under 5% in October to May, the lowest months.
Yes
Of the 4 cities where we can rate Eastern Willow Spreadwing sightings, Rostov-on-Don has the highest daily chance: about 20%. Next come Istanbul (Turkey, about 10%) and Budapest (Hungary, about 10%).
Same order: Odonata
The closest relatives of the Eastern Willow Spreadwing that you can see in Rostov-on-Don (order Odonata, Dragonflies and Damselflies) are Blue-Tailed Damselfly (about 20%), Southern Skimmer (about 20%) and White-Tailed Skimmer (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eastern Willow Spreadwing is recorded against all the insects logged in Rostov-on-Don (22 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.
