Argia moesta
In 3 days ~10% in a week ~30%
The powdered dancer (Argia moesta) is a damselfly of the family Coenagrionidae. It is native to North America. It may be seen year-round in at least some of its range. The common name refers directly to the male's pruinosity, appearing to be covered with a powdery blue or grayish substance. Older males are more pruinose, and may even be more ash white than blue. The specific epithet moesta, means sorrowful, and may refer to customs (such as those on Ash Wednesday) of dusting oneself with ashes to express sorrow or mourning.
Males have a blue tip at the end of the abdomen. Immature (freshly moulted, or teneral) males are tan to dark brown, turning darker with age and becoming almost completely whitish (pruinose) at maturity. Females come in blue and brown forms based on the color of the thorax, which has hair thin dark shoulder stripes.
The blue form female is very similar to the female blue-fronted dancer; a key to separating these two is the number of cells below the stigma: our species has two cells below the stigma where a blue-fronted dancer has one.
During mating, a male uses claspers at the end of his abdomen to grab a female... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 4 | Saguaro National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Houston | 🇺🇸 United States | |
| 3 | Dallas | 🇺🇸 United States | |
| 4 | Baltimore | 🇺🇸 United States | |
| 5 | San Antonio | 🇺🇸 United States | |
| 6 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 7 | Las Vegas | 🇺🇸 United States | |
| 8 | Montreal | 🇨🇦 Canada | |
| 9 | Toronto | 🇨🇦 Canada | |
| 10 | Philadelphia | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Powdered Dancer sighting in Montreal on a given day, based on 61 verified sightings from GBIF citizen-science data. It is the 195th most-seen of the 926 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
June to August
In those months about 10% of wildlife watchers report a Powdered Dancer in Montreal on a given day, against under 5% in September to May, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Powdered Dancer sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
8th of 13
Of the 13 cities where we can rate Powdered Dancer sightings, Montreal ranks 8th at under 5%. The best odds are in Austin (United States, about 10%), Houston (United States, about 10%) and Dallas (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Powdered Dancer is recorded against all the insects logged in Montreal (61 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.
