Hydrobasileus croceus
In 3 days ~10% in a week ~30%
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 |
Rare
Under 5% of wildlife watchers report an Amber-Winged Glider sighting in Taipei on a given day, based on 38 verified sightings from GBIF citizen-science data. It is the 298th most-seen of the 765 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.
May and July–September
In those months about 10% of wildlife watchers report an Amber-Winged Glider in Taipei on a given day, against under 5% in June and October–April, the lowest months. Those are among Taipei's wettest months, with about 230 mm of rain a month against 90 mm in February.
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.
4th of 4
Of the 4 cities where we can rate Amber-Winged Glider sightings, Taipei ranks 4th at under 5%. The best odds are in Kochi (India, about 10%), Jakarta (Indonesia, about 10%) and Singapore (Singapore, under 5%).
Same family: Libellulidae
The closest relatives of the Amber-Winged Glider that you can see in Taipei (family Libellulidae, Skimmers) are Neurothemis taiwanensis (about 30%), Crimson-Tailed Marsh Hawk (about 20%) and Blue-Tailed Forest Hawk (about 20%), 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 Taipei (38 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.
