No-see-um bites in Florida
Florida has 45 verified no-see-um records in the GBIF biodiversity database — one of the highest counts in the country. Sightings concentrate in March. The bite itself appears a stinging pinprick, then bumps within an hour and lasts up to two weeks of itch in sensitised people.
| Verified records | 45 |
|---|---|
| Peak sightings | March |
| State bite season | January to December |
| Active | dawn and dusk, in still air |
| Habitat | coastal marsh, mangrove, lakesides and damp soil — abundant in Florida and the Gulf Coast |
| Bite appears | a stinging pinprick, then bumps within an hour |
Identifying it in Florida
The name is the description: the insect is roughly a millimetre long and rarely seen. Bites arrive in numbers, are far itchier than their size suggests, and appear on any skin left uncovered at dusk near water.
Locally, the species most often confused with it are honey bee sting, fire ant sting, lone star tick bite — all of which are also recorded in Florida.
Seek medical care if
- spreading redness or pus from scratched bites
- blistering over a wide area
What else it could be in Florida
These are recorded in Florida too and are the ones most often confused with it here. The differences below are the ones that actually separate them.
| No-see-um bite | Mosquito bite | Flea bite | Chigger bite | |
|---|---|---|---|---|
| Pattern | dozens, clustered on exposed skin | single bumps scattered over exposed skin | clusters of three or four, or short irregular groups | clusters concentrated where clothing is tight |
| Where on body | ankles, lower legs, arms | ankles, lower legs, arms | ankles, shins, behind the knees | ankles, behind the knees, waistband |
| Appears | a stinging pinprick, then bumps within an hour | within minutes | immediately to within an hour | 3 to 6 hours after exposure — never immediate |
| Records here | 45 | 197 | 67 | 3 |
Season in Florida specifically
Records in Florida concentrate in March, which is what local sighting data shows rather than a national average — seasonality shifts substantially with latitude. The general bite season in Florida runs January to December. Note that sighting records here peak slightly outside the typical activity window for this species, which usually reflects when people report specimens rather than when bites happen.
Because coastal marsh, mangrove, lakesides and damp soil — abundant in Florida and the Gulf Coast, exposure in Florida tends to be concentrated in specific places rather than spread evenly — which is why a bite history ("where were you in the 24 hours before?") narrows the answer faster than the appearance of the mark.
Care
- wash, cold pack, antihistamine
- hydrocortisone cream for persistent itch
Avoiding them in Florida
- standard window screens do not stop them — fine mesh is needed
- avoid still evenings near marsh
- repellent helps but reapplication matters
Questions
When are no-see-ums active in Florida?
Florida records peak in March. The general bite season in Florida runs January to December.
Are they common in Florida?
Florida accounts for 45 verified records in GBIF, ranking it 1st among states for this species. Records reflect reporting effort as well as abundance.
What does the bite look like?
tiny red dots that swell into hard, intensely itchy bumps, bright red. Dozens, clustered on exposed skin.
Get a photo assessment in the app
Everything above is free to read. The app adds what a page cannot: point your camera at the bite and get an assessment of the most likely cause, a severity read, and a day-by-day care plan — including the specific signs that mean you should be seen.
iPhone and iPad. Free to download.