Orthetrum testaceum
In 3 days ~40% in a week ~70%
Orthetrum testaceum, common names Crimson Dropwing or Orange Skimmer is an Asian freshwater dragonfly species belonging to the family Libellulidae. This common species is widespread throughout India, Indonesia, Malaysia, Philippines, Singapore and Thailand. These dragonflies may occur in various areas with standing waters, as in ponds, drains, marshes, around rivers, streams, lakes, and gardens.
Orthetrum testaceum can reach a body length of about 43–48 mm (1.7–1.9 in), with a hindwing of 34–38 mm (1.3–1.5 in) (in males). In these large dragonflies the thorax of adult males is orange-brown, with a vermilion red abdomen. The eyes are light brownish. The wings are smoky transparent, with an amber patch at the base. In adult females and in recently emerged males the body is olive-green to brown in colour with black markings and a clear base of the hindwings.
These dragonflies are rather similar to Orthetrum chrysis, but O. testaceum is more reddish, while O. chrysis has a reddish brown thorax. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bako National Park | 🇲🇾 Malaysia | |
| 2 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 3 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 4 | Sepilok | 🇲🇾 Malaysia | |
| 5 | Kinabalu Park | 🇲🇾 Malaysia | |
| 6 | Kerinci Seblat National Park | 🇮🇩 Indonesia | |
| 7 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 8 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 9 | Khao Sok National Park | 🇹🇭 Thailand | |
| 10 | Kaeng Krachan National Park | 🇹🇭 Thailand |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Jakarta | 🇮🇩 Indonesia | |
| 2 | Yogyakarta | 🇮🇩 Indonesia | |
| 3 | Kuching | 🇲🇾 Malaysia | |
| 4 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 5 | Johor Bahru | 🇲🇾 Malaysia | |
| 6 | Bandung | 🇮🇩 Indonesia | |
| 7 | Singapore | 🇸🇬 Singapore |
Possible
About 20% of wildlife watchers report an Orange Skimmer sighting in Kaeng Krachan National Park on a given day, based on 42 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 30th most-seen of the 296 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.
July and September–October
In those months about 30% of wildlife watchers report an Orange Skimmer in Kaeng Krachan National Park on a given day, against under 5% in August, the lowest month. Those are among Kaeng Krachan National Park's wettest months, with about 240 mm of rain a month against 30 mm in December.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Orange Skimmer sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
10th of 10
Of the 10 parks where we can rate Orange Skimmer sightings, Kaeng Krachan National Park ranks 10th at about 20%. The best odds are in Bako National Park (Malaysia, about 40%), Danum Valley Conservation Area (Malaysia, about 40%) and Gunung Leuser National Park (Indonesia, about 30%). All parks ranked.
Same genus: Orthetrum
The closest relatives of the Orange Skimmer that you can see in Kaeng Krachan National Park (genus Orthetrum) are Blue Marsh Hawk (about 20%), Brown-Backed Red Marsh Hawk (about 10%) and Crimson-Tailed Marsh Hawk (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Orange Skimmer is recorded against all the insects logged in Kaeng Krachan National Park (42 verified sightings from 2019 to 2026), 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.
