Ischnura ramburii
In 3 days ~20% in a week ~30%
Rambur's forktail (Ischnura ramburii) is a member of the damselfly family Coenagrionidae. Males are green with blue on abdominal segments 8 and 9. Females are orange-red, olive green, or similar to males in coloration. This is the most widespread New World Ischnura, occurring throughout the Americas from the United States to Chile, as well as Hawaii and the Antilles. The damselfly is a beneficial insect which is a predator of mosquitos and other insects and is not harmful to humans.
Ponds, lakes, marshes, and slow streams with vegetation and sunlight are its main habitat. Damselfly nymphs never live in salt water, but I. ramburii nymphs have been observed in brackish and even sulphurous waters. John Edward Lloyd qualified the mating of this species as "enigmatic": the male grasps the female's head with the terminal appendages of its abdomen while the female seeks and absorbs the sperm with its gonopore. He hypothesised that this "wheel" could have evolved in order to prevent females from escaping during the copulation.
Edmond de Sélys Longchamps named this damselfly in honor of Jules Pierre Rambur, an entomologist 12 years his senior. Rambur... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Everglades National Park | 🇺🇸 United States | |
| 2 | Big Cypress National Preserve | 🇺🇸 United States | |
| 3 | Merritt Island National Wildlife Refuge | 🇺🇸 United States | |
| 4 | Ría Lagartos Biosphere Reserve | 🇲🇽 Mexico | |
| 5 | Biotopo Cerro Cahuí | 🇬🇹 Guatemala | |
| 6 | Lago de Yojoa | 🇭🇳 Honduras | |
| 7 | Cerro Azul Meámbar National Park | 🇭🇳 Honduras | |
| 8 | Padre Island National Seashore | 🇺🇸 United States | |
| 9 | Big Bend National Park | 🇺🇸 United States | |
| 10 | Saguaro National Park | 🇺🇸 United States | |
| 11 | Soberanía National Park | 🇵🇦 Panama | |
| 12 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Santo Domingo | 🇩🇴 Dominican Republic | |
| 2 | Miami | 🇺🇸 United States | |
| 3 | Orlando | 🇺🇸 United States | |
| 4 | Houston | 🇺🇸 United States | |
| 5 | Austin | 🇺🇸 United States | |
| 6 | Lima | 🇵🇪 Peru | |
| 7 | Dallas | 🇺🇸 United States | |
| 8 | Phoenix | 🇺🇸 United States | |
| 9 | Mesa | 🇺🇸 United States | |
| 10 | San Antonio | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Rambur's Forktail sighting in Phoenix on a given day, based on 33 verified sightings from GBIF citizen-science data. It is the 85th most-seen of the 264 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
April to November
In those months about 10% of wildlife watchers report a Rambur's Forktail in Phoenix on a given day, against under 5% in December to March, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Rambur's Forktail 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 15
Of the 15 cities where we can rate Rambur's Forktail sightings, Phoenix ranks 8th at about 10%. The best odds are in Santo Domingo (Dominican Republic, about 20%), Miami (United States, about 20%) and Orlando (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Rambur's Forktail is recorded against all the insects logged in Phoenix (33 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.
