Tramea transmarina
In 3 days ~20% in a week ~40%
Tramea transmarina, commonly known as the red glider or northern glider, is a species of dragonfly in the family Libellulidae. The species occurs across islands of the Pacific, northern Australia and parts of Southeast Asia. The type locality is Fiji.
In 1867, Brauer described Tramea transmarina from specimens collected in Fiji. In the same work he also described Tramea samoensis from Samoa, later treated as a synonym of Tramea transmarina. In 1878, Selys described Tramea euryale from material collected in New Guinea and neighbouring islands. The species was later regarded as closely related to Tramea transmarina.
In 1942, Lieftinck described Tramea propinqua from New Guinea and nearby islands, distinguishing it from Tramea transmarina and Tramea euryale by the extent and shape of the dark hindwing patch and differences in the male secondary genitalia.
Some authorities, including the World Odonata List, now treat Tramea propinqua as a synonym of Tramea transmarina, while others such as the Australian Faunal Directory continue to recognise it as a separate species. Tramea transmarina is a medium to large dragonfly with dark patches at the base... 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 a Red Glider sighting in Kaohsiung on a given day, based on 17 verified sightings from GBIF citizen-science data. It is the 96th most-seen of the 218 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.
September
In that month about 20% of wildlife watchers report a Red Glider in Kaohsiung on a given day, against under 5% in August and December–March, the lowest months. That is one of Kaohsiung's wettest months, with about 240 mm of rain against 25 mm in February.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Red Glider sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 3 cities where we can rate Red Glider sightings, Kaohsiung ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Bangkok (Thailand, about 10%).
Same family: Libellulidae
The closest relatives of the Red Glider that you can see in Kaohsiung (family Libellulidae, Skimmers) are Chalky Percher (about 20%), Slender Skimmer (about 20%) and Neurothemis taiwanensis (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Red Glider is recorded against all the insects logged in Kaohsiung (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.
