Venomous spiders in New Jersey

Venomous spiders living in New Jersey

1species

Black widow. Photo (Southern black widow): Kazvorpal, CC BY-SA 4.0, via Wikimedia Commons

How to recognize them

Black widowMedically significant61 records, 9 counties

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

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: 9 counties so far. Blank does not mean absent.

Active months

Open records of venomous spiders in New Jersey by month; most fall in May to July, September.

Harmless spiders people mistake for them

Wolf spiderHarmlessHarmless

Quick answers

Questions

How many venomous spiders are in New Jersey?

1 species live in the state: Black widow.

Which venomous spiders in New Jersey are dangerous?

Black widow: bites or stings need medical care.

When are venomous spiders most active in New Jersey?

Most open records fall in May to July, September.