Argia apicalis
In 3 days ~10% in a week ~20%
The blue-fronted dancer (Argia apicalis) is a species of damselfly in the family Coenagrionidae, native to parts of North America. It was first described by the American zoologist Thomas Say in 1840. It is a common species with a wide range and the International Union for Conservation of Nature has assessed its conservation status as being of "least concern".
This damselfly ranges in length between about 33 and 40 mm (1.3 and 1.6 in). Most males have a blue thorax, the plates being separated by a few black lines, and also have a color-tipped abdomen, segments eight, nine and ten being bright blue. The remaining segments are dark brown. However the color of the thorax of Argia apicalis is variable and some males can be greyish-black rather than blue. They can change from one phase to the other and back again over the course of several days, with several intervening variations on the way; neither color phase seems to be particularly related to age or sexual maturity.
Females exhibit three thoracic color phases: brown, turquoise and grayish-black. Again the phase change often takes place in steps, and none of the phases seems to be associated with a particular age or... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Congaree National Park | 🇺🇸 United States | |
| 2 | Big Bend National Park | 🇺🇸 United States | |
| 3 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 4 | Shenandoah National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Houston | 🇺🇸 United States | |
| 2 | Chicago | 🇺🇸 United States | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Philadelphia | 🇺🇸 United States | |
| 6 | Dallas | 🇺🇸 United States | |
| 7 | Baltimore | 🇺🇸 United States | |
| 8 | Austin | 🇺🇸 United States | |
| 9 | Detroit | 🇺🇸 United States | |
| 10 | Minneapolis [Saint Paul] | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Blue-Fronted Dancer sighting in Minneapolis [Saint Paul] on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 300th most-seen of the 672 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
July
In that month about 10% of wildlife watchers report a Blue-Fronted Dancer in Minneapolis [Saint Paul] on a given day, against under 5% in August to June, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Blue-Fronted Dancer sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
10th of 13
Of the 13 cities where we can rate Blue-Fronted Dancer sightings, Minneapolis [Saint Paul] ranks 10th at under 5%. The best odds are in Houston (United States, about 10%), Chicago (United States, about 10%) and Boston (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Blue-Fronted Dancer is recorded against all the insects logged in Minneapolis [Saint Paul] (20 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.
