Leucorrhinia hudsonica
In 3 days ~30% in a week ~60%
The Hudsonian whiteface (Leucorrhinia hudsonica) is a species of dragonfly in the family Libellulidae. Its common name comes from where it is found, Hudson Bay. [[File:|thumb|right]] The Hudsonian whiteface has a length of 27 to 30 mm (1.1 to 1.2 in). Male dragonflies are black and marked with red on the thorax and the abdomen. The elongated spots on the abdomen are possibly pointed on one end, this forms a line along the length of the top side of the abdomen. The female is a dark brownish color and marked similarly to the male except the markings are yellow instead of black. Both sexes have creamy white faces.
The naiad of the Hudsonian whiteface has a length of 16 to 18 millimetres (0.63 to 0.71 in). Its abdomen is rounded, which gives it a short, stocky appearance known as the sprawler form. Naiads are brown with three dark stripes marking the length below the abdomen. In some cases, there are tiny hooks on abdominal segments three through six. Every side of abdominal segments eight and nine has a spine that points out away from the abdomen.
The Hudsonian whiteface is found in an area stretching from Alaska to Labrador... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Gros Morne National Park | 🇨🇦 Canada | |
| 2 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 3 | Great Bear Rainforest | 🇨🇦 Canada | |
| 4 | Yosemite National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Hudsonian Whiteface sighting in Cape Breton Highlands National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 43rd most-seen of the 68 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Hudsonian Whiteface in Cape Breton Highlands National Park on a given day, against under 5% in August to May, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Hudsonian Whiteface 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 4 parks where we can rate Hudsonian Whiteface sightings, Cape Breton Highlands National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Gros Morne National Park (Canada, about 10%).
Same family: Libellulidae
The closest relatives of the Hudsonian Whiteface that you can see in Cape Breton Highlands National Park (family Libellulidae, Skimmers) are Chalk-Fronted Corporal (about 20%) and Autumn Meadowhawk (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Hudsonian Whiteface is recorded against all the insects logged in Cape Breton Highlands National Park (7 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.
