No-see-ums in Florida
Yes — no-see-ums are recorded in Florida. The GBIF biodiversity database holds 45 verified no-see-um records from the state — one of the highest counts in the country. Sightings concentrate in March. Onset: a stinging pinprick, then bumps within an hour. Duration: 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 |
No-see-um bites in Florida: what the mark looks like
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 fire ant sting, black widow spider bite, bald-faced hornet sting — 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 |
No-see-um 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.
Month by month in Florida
These are the 45 Florida records broken out by the month they were recorded — not a national curve redrawn for the state. Records appear in 6 of the 12 months here. The single busiest month is March with 36 records (80% of the state total).
| Month | Records | Share |
|---|---|---|
| March | 36 | 80% |
| April | 2 | 4% |
| July | 4 | 9% |
| August | 1 | 2% |
| November | 1 | 2% |
| December | 1 | 2% |
Counts are observations submitted to GBIF, not bites. They tell you when the animal is out and being noticed in Florida; they do not tell you how many people were bitten. The thinnest month with any record at all is August (1).
How Florida compares
Across the 2 states with any no-see-um records, Florida ranks 1st with 45. Directly below is Massachusetts (1).
Inside Florida itself the picture is different again: of the 20 biting species we track with records here, this one is 15th and accounts for <1% of the 30,054 records logged in the state. A species can be common nationally and marginal in one state, or the reverse — which is the whole reason this page exists separately from the national guide.
Care
- wash, cold pack, antihistamine
- hydrocortisone cream for persistent itch
Avoiding no-see-ums in Florida
- standard window screens do not stop them — fine mesh is needed
- avoid still evenings near marsh
- repellent helps but reapplication matters
Questions
Are there no-see-ums in Florida?
Yes. Florida accounts for 45 verified records in GBIF, ranking it 1st among the 2 states with any records for this species. Within Florida it is 15th of the 20 biting species we track here, at <1% of the state's records. Records reflect reporting effort as well as abundance.
When are no-see-ums active in Florida?
Florida records peak in March. The general bite season in Florida runs January to December.
What does the bite look like?
tiny red dots that swell into hard, intensely itchy bumps, bright red. Dozens, clustered on exposed skin.
Which month has the most sightings in Florida?
March, with 36 of the 45 Florida records (80%). Records appear in 6 of the 12 months here. This counts sightings submitted to GBIF, not bites.
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.
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