Hydrobasileus croceus
In 3 days ~20% in a week ~40%
Hydrobasileus croceus, the amber-winged marsh glider, is a species of dragonfly in the family Libellulidae. It is a widely distributed species in many Asian countries. It is a large reddish-brown dragonfly with golden-amber tinted wings. Eyes are reddish-brown above, yellowish below. Its thorax is ohvaceous suffused with golden reddish-brown, Its base of hind-wings have a moderately broad dark reddish-brown mark. Abdomen is olivaceous, changing to ochreous towards anal end, marked with black. Segments 4 to 9 have apical and basal dorsal black wedge-shaped spots.
It breeds in weedy ponds and lakes. The male is often seen patrolling over water, and rarely perches. When perched, they prefer to hang vertically on twigs inside dense shrubbery. List of odonates of Sri Lanka List of odonates of India
List of odonata of Kerala croceus.html World Dragonflies Animal diversity web Query Results Archived 2015-02-21 at the Wayback Machine Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Sok National Park | 🇹🇭 Thailand | |
| 2 | Kaeng Krachan National Park | 🇹🇭 Thailand |
With luck
About 10% of wildlife watchers report an Amber-Winged Glider sighting in Jakarta on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 207th most-seen of the 239 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.
March–April, July and September
In those months about 10% of wildlife watchers report an Amber-Winged Glider in Jakarta on a given day, against under 5% in May–June, August and October–February, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Amber-Winged Glider sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 cities where we can rate Amber-Winged Glider sightings, Jakarta ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Kochi (India, about 10%).
Same family: Libellulidae
The closest relatives of the Amber-Winged Glider that you can see in Jakarta (family Libellulidae, Skimmers) are Red Percher (about 40%), Orange Skimmer (about 40%) and Slender Skimmer (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Amber-Winged Glider is recorded against all the insects logged in Jakarta (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.
