Venomous spiders in Tennessee

Venomous spiders living in Tennessee

2species, plus 1 with rare records

Black widow, Brown recluse.

How to recognize them

Black widow Latrodectus mactans, L. variolus, L. hesperus

Shiny black female with a round abdomen
Red hourglass or two red marks under the abdomen
Messy, strong web low to the ground, often in garages, wood piles and water meters

Brown recluse Loxosceles reclusa

Dark violin shape on the back, neck of the violin points to the rear
Six eyes in three pairs (most spiders have eight)
Plain tan abdomen and legs with no bands or spines

Almost all spiders have venom, but very few can hurt people. We list the ones with medically significant bites plus a few that people often worry about.

Counties with records

None recorded
1 species
2
3 to 4
5 or more

Venomous spiders with open GBIF records, by county: 27 counties so far. Blank does not mean absent.

Active months

Open records of venomous spiders in Tennessee by month; most fall in May to August.

Rare records

Rare records Brown widow 2 open records, latest 2022

Harmless spiders people mistake for them

Brown Recluse vs Wolf Spider Wolf spider: harmless
Black Widow vs False Widow False widow: harmless
Brown Recluse vs Cellar Spider Cellar spider: harmless

Quick answers

Questions

How many venomous spiders are in Tennessee?

2 species live in the state: Black widow and Brown recluse.

Which venomous spiders in Tennessee are dangerous?

Black widow and Brown recluse: bites or stings need medical care.

When are venomous spiders most active in Tennessee?

Most open records fall in May to August.

Which harmless spiders get mistaken for venomous ones in Tennessee?

Wolf spider, False widow and Cellar spider. See the side-by-side comparisons below.