Crocothemis servilia
In 3 days ~40% in a week ~70%
The scarlet skimmer or ruddy marsh skimmer (Crocothemis servilia) is a species of dragonfly of the family Libellulidae, native to east and southeast Asia and introduced to Jamaica, Florida, and Hawaii. It is a medium sized dragonfly. The male is blood-red, with a thin black line along the mid-dorsal abdomen in the nominate subspecies. Its eyes are blood-red above, purple laterally. Thorax is bright ferruginous, often blood-red on dorsum. Anal appendages are blood-red. Female is similar to the male, but with olivaceous-brown thorax and abdomen. The black mid-dorsal carina is rather broad.
It breeds in ponds, ditches, marshes, open swamps and rice fields. List of odonates of Sri Lanka List of odonates of India List of odonata of Kerala "Crocothemis servilia". Integrated Taxonomic Information System. Retrieved 9 February 2006.
Chen et al (2009) Common edible insects and their utilization in China. Entomological... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sundarbans National Park | 🇮🇳 India | |
| 2 | Keoladeo National Park | 🇮🇳 India | |
| 3 | Royal Bardia National Park | 🇳🇵 Nepal | |
| 4 | Chitwan National Park | 🇳🇵 Nepal | |
| 5 | Everglades National Park | 🇺🇸 United States | |
| 6 | Ranthambore National Park | 🇮🇳 India | |
| 7 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 8 | Kanha National Park | 🇮🇳 India | |
| 9 | Khao Yai National Park | 🇹🇭 Thailand | |
| 10 | Minneriya National Park | 🇱🇰 Sri Lanka | |
| 11 | Big Cypress National Preserve | 🇺🇸 United States | |
| 12 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 13 | Merritt Island National Wildlife Refuge | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kota | 🇮🇳 India | |
| 2 | Vasai-Virar | 🇮🇳 India | |
| 3 | Kolkata | 🇮🇳 India | |
| 4 | Daegu | 🇰🇷 South Korea | |
| 5 | Raipur | 🇮🇳 India | |
| 6 | Durg | 🇮🇳 India | |
| 7 | Prayagraj | 🇮🇳 India | |
| 8 | Yogyakarta | 🇮🇩 Indonesia | |
| 9 | Thrissur | 🇮🇳 India | |
| 10 | Salem | 🇮🇳 India |
With luck
About 10% of wildlife watchers report a Scarlet Skimmer sighting in Shanghai on a given day, based on 93 verified sightings from GBIF citizen-science data. It is the 22nd most-seen of the 215 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.
August and September
In those months about 30% of wildlife watchers report a Scarlet Skimmer in Shanghai on a given day, against under 5% in November to March, the lowest months. Those are among Shanghai's wettest months, with about 160 mm of rain a month against 55 mm in December.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Scarlet 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.
55th of 79
Of the 79 cities where we can rate Scarlet Skimmer sightings, Shanghai ranks 55th at about 10%. The best odds are in Kota (India, about 70%), Vasai-Virar (India, about 40%) and Kolkata (India, about 40%).
Same family: Libellulidae
The closest relatives of the Scarlet Skimmer that you can see in Shanghai (family Libellulidae, Skimmers) are Pied Skimmer (about 20%), Slender Skimmer (about 20%) and Ditch Jewel (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Scarlet Skimmer is recorded against all the insects logged in Shanghai (93 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.
