Libellula luctuosa
In 3 days ~40% in a week ~70%
The widow skimmer (Libellula luctuosa) is one of the group of dragonflies known as king skimmers. The nymphs live in the water, molting and growing until they are ready to emerge from the water and then molting a final time to reveal their wings.
Widow skimmers have large bulky bodies, with large heads. Males have a steely blue body area but females are yellow with brown stripes. Eyes are also large and close together meeting in the middle of the head. They have three pairs of legs. Legs are black in color. They have two pairs of wings: forewings and hindwings. Wings of both sexes are marked with prominent black basal bands. They keep their wings extended over their bodies. Adult males develop broad white spots at midwing as they mature. The abdomen measures 24–32 mm. They also have a slight white hue on their abdomen and thorax.
This species can be found commonly across the United States (except in the higher Rocky Mountains areas) and in southern Ontario and Quebec. This species is found commonly in muddy substrates, or still bodies of waters such as ponds, lakes, streams, and creeks.
They are predators... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 3 | Big Bend National Park | 🇺🇸 United States | |
| 4 | Acadia National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Dallas | 🇺🇸 United States | |
| 3 | Denver | 🇺🇸 United States | |
| 4 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 5 | Portland | 🇺🇸 United States | |
| 6 | Sacramento | 🇺🇸 United States | |
| 7 | Chicago | 🇺🇸 United States | |
| 8 | Las Vegas | 🇺🇸 United States | |
| 9 | Boston | 🇺🇸 United States | |
| 10 | Washington | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Widow Skimmer sighting in Denver on a given day, based on 303 verified sightings from GBIF citizen-science data. It is the 19th most-seen of the 461 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
In that month about 30% of wildlife watchers report a Widow Skimmer in Denver on a given day, against under 5% in November to May, the lowest months. That is one of Denver's wettest months, with about 60 mm of rain against 15 mm in January.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Widow 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.
3rd of 21
Of the 21 cities where we can rate Widow Skimmer sightings, Denver ranks 3rd at about 10%. The best odds are in Austin (United States, about 20%) and Dallas (United States, about 20%).
GBIF citizen-science records
It is estimated from how often the Widow Skimmer is recorded against all the insects logged in Denver (303 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.
