Venomous spiders in Montana
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
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
Active months
Harmless spiders people mistake for them
Quick answers
Questions
How many venomous spiders are in Montana?
1 species live in the state: Black widow.
Which venomous spiders in Montana are dangerous?
Black widow: bites or stings need medical care.