Black Widow Spider

 Identification and Control

Proper identification is an important first step in controlling ants.

Latrodectus hesperus

How to Identify an 

Black Widow Spider

Adult female black widow spiders are a shiny black color with a red hourglass on the underside of the abdomen (there are beneficial lookalikes without the red hourglass).

Immature females have a pale brown to black body with a white to orangish banding; they get progressively more solid black as they molt toward adulthood.

Male black widows are about 1/3 of the size of females are pale brown with white markings, resembling immature females.

Where do they come from?

Black widows prefer preexisting holes in dark, undisturbed areas. They hide during the day and are in their cobwebs at night. Black widows are common around building foundations, rock and wood piles, outbuildings, water meter/irrigation boxes and around exterior lighting.

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What do they look like?

Adult female black widow with the red hourglass shape on the underside of her abdomen
Immature females and male black widows are extremely similar in their coloring
Black widow prefer dark, undisturbed areas

Where do they live?

Nocturnal, meaning they are awake at night

Name:

Latrodectus hesperus

Size:

Diet:

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