Black widow spider bites in Louisiana
Louisiana has 148 verified black widow spider records in the GBIF biodiversity database — ranking it 14th nationally. Sightings concentrate in May, June, July, October. The bite itself appears a sharp pinprick, then pain building over 30 to 60 minutes and lasts symptoms usually settle within 2 to 3 days.
| Verified records | 148 |
|---|---|
| Peak sightings | May, June, July, October |
| State bite season | February to December |
| Active | the spider is nocturnal but bites when trapped against skin at any hour |
| Habitat | woodpiles, sheds, meter boxes, garden furniture, under eaves — undisturbed dark corners |
| Bite appears | a sharp pinprick, then pain building over 30 to 60 minutes |
Identifying it in Louisiana
The bite itself is unimpressive — a pinprick and two faint punctures. What identifies it is what follows: pain that spreads from the bite into large muscle groups, classically severe abdominal cramping that has been mistaken for appendicitis. The spider is identifiable by the red hourglass on the underside of a glossy black abdomen.
Locally, the species most often confused with it are honey bee sting, fire ant sting, carpenter ant bite — all of which are also recorded in Louisiana.
Seek medical care if
- severe muscle cramps in the abdomen, back or chest
- sweating, nausea, rising blood pressure
- any suspected bite in a child, an older adult or during pregnancy — seek care
What else it could be in Louisiana
These are recorded in Louisiana too and are the ones most often confused with it here. The differences below are the ones that actually separate them.
| Black widow spider bite | Brown recluse spider bite | Wolf spider bite | |
|---|---|---|---|
| Pattern | single site | single site | single site |
| Where on body | hands, forearms, legs — usually where a hand reached into a dark space | torso under clothing, upper arms, thighs — often where clothing was put on with the spider inside | hands, feet, lower legs |
| Appears | a sharp pinprick, then pain building over 30 to 60 minutes | often painless at first | immediate sharp pain |
| Records here | 148 | 32 | 5 |
Season in Louisiana specifically
Records in Louisiana concentrate in May, June, July, October, which is what local sighting data shows rather than a national average — seasonality shifts substantially with latitude. The general bite season in Louisiana runs February to December.
Because woodpiles, sheds, meter boxes, garden furniture, under eaves — undisturbed dark corners, exposure in Louisiana 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 the area and apply a cold pack
- seek medical care for anything beyond mild local pain — antivenom exists and pain control matters
- do not apply a tourniquet or attempt to cut or suck the wound
Avoiding them in Louisiana
- gloves when moving woodpiles, boxes or garden furniture
- shake out stored shoes and gloves
- reduce clutter in sheds and garages
Questions
When are black widow spiders active in Louisiana?
Louisiana records peak in May, June, July, October. The general bite season in Louisiana runs February to December.
Are they common in Louisiana?
Louisiana accounts for 148 verified records in GBIF, ranking it 14th among states for this species. Records reflect reporting effort as well as abundance.
What does the bite look like?
two small puncture marks with a pale centre and a red ring, red ring, sometimes blanching in the middle. Single site.
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.