Plagioneurus univittatus
In 3 days ~20% in a week ~40%
Plagioneurus is a genus of long-legged flies in the family Dolichopodidae. It contains only one species, Plagioneurus univittatus, and is the only member of the subfamily Plagioneurinae. The range of P. univittatus spans from the Eastern United States south to South America.
The genus name is derived from the Ancient Greek words πλάγιος (plágios, 'oblique') and νεῦρον (neûron, 'nerve'), referring to the unusual angle of the last part of the medial wing vein M, which converges with radial vein R4+5.
In the adults, the thorax is a metallic green, with a strong black stripe in the center, and the abdomen is black with white pruinose posterior bands. The wings are hyaline. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Cypress National Preserve | 🇺🇸 United States | |
| 2 | Everglades National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Miami | 🇺🇸 United States | |
| 2 | Chicago | 🇺🇸 United States | |
| 3 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Plagioneurus univittatus sighting in Big Cypress National Preserve on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 193rd most-seen of the 262 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
February
In that month about 20% of wildlife watchers report a Plagioneurus univittatus in Big Cypress National Preserve on a given day, against under 5% in March, May–September and November–December, the lowest months. That is one of Big Cypress National Preserve's driest months, with about 45 mm of rain against 260 mm in June.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Plagioneurus univittatus sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Plagioneurus univittatus sightings, Big Cypress National Preserve has the highest daily chance: about 10%. Next come Everglades National Park (United States, about 10%).
Same order: Diptera
The closest relatives of the Plagioneurus univittatus that you can see in Big Cypress National Preserve (order Diptera, Flies) are White-Faced Plushback (about 20%), Florida Calligrapher (about 10%) and Grallipeza nebulosa (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Plagioneurus univittatus is recorded against all the insects logged in Big Cypress National Preserve (8 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.
