Copera marginipes
In 3 days ~20% in a week ~50%
Copera marginipes, commonly known as the yellow bush dart, is a species of damselfly in the family Platycnemididae. It is native to Asia, where it is widespread and common. It is a medium sized damselfly with brown-capped yellow eyes with a narrow equatorial black band encircling them. Its thorax is black on dorsum with a yellow mid-dorsal carina and a narrow greenish-yellow humeral stripe, split in two and overlap each other. This stripe is followed by a broad black fascia, on the middle of the lateral side of the thorax, peppered with small pale yellow spots. The lateral sides beyond this is yellow, marked with an irregular black stripe on the anterior border of postero-lateral suture, and another one on the middle portion of metepimeron. Abdomen is black on dorsal half up to segment 8; paler on ventral half and with bluish-white basal annules. Segment 9 is bluish-white on dorsal half and black below it. Segment 10 is bluish-white.
Anal appendages are pale yellow to white, the inferiors tipped with black. The superiors are half the length of segment 10 and inferiors are at least four times the length of superiors. In the related species, Copera vittata... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Sok National Park | 🇹🇭 Thailand | |
| 2 | Khao Yai National Park | 🇹🇭 Thailand | |
| 3 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 4 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 5 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 6 | Minneriya National Park | 🇱🇰 Sri Lanka |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yogyakarta | 🇮🇩 Indonesia | |
| 2 | Colombo [Sri Jayawardenepura Kotte] | 🇱🇰 Sri Lanka | |
| 3 | Jakarta | 🇮🇩 Indonesia | |
| 4 | Tasikmalaya | 🇮🇩 Indonesia | |
| 5 | Taichung | 🇹🇼 Taiwan | |
| 6 | Thiruvananthapuram | 🇮🇳 India | |
| 7 | Xiamen City | 🇨🇳 China | |
| 8 | Tuen Mun | 🇨🇳 China | |
| 9 | Taipei | 🇹🇼 Taiwan | |
| 10 | Kozhikode | 🇮🇳 India |
With luck
About 10% of wildlife watchers report a Yellow Featherlegs sighting in Kolkata on a given day, based on 17 verified sightings from GBIF citizen-science data. It is the 116th most-seen of the 213 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
October
In that month about 20% of wildlife watchers report a Yellow Featherlegs in Kolkata on a given day, against under 5% in August–September and December–March, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Yellow Featherlegs sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
13th of 20
Of the 20 cities where we can rate Yellow Featherlegs sightings, Kolkata ranks 13th at about 10%. The best odds are in Yogyakarta (Indonesia, about 30%), Colombo [Sri Jayawardenepura Kotte] (Sri Lanka, about 20%) and Jakarta (Indonesia, about 20%).
Same family: Platycnemididae
The closest relatives of the Yellow Featherlegs that you can see in Kolkata (family Platycnemididae, White-legged damselflies) are Marsh Dancer (about 30%) and Black-Kneed Featherleg (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow Featherlegs is recorded against all the insects logged in Kolkata (17 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.
