3 Types of Black Widows in Alabama

3 types of black widows have a verified observation record in Alabama. The most frequently recorded are Southern Black Widow, Brown Widow and Northern Black Widow. Here is the full list, ranked by how often each is reported on iNaturalist.

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3 types of black widows have a verified observation record in Alabama. The most frequently recorded are Southern Black Widow, Brown Widow and Northern Black Widow. Here is the full list, ranked by how often each is reported on iNaturalist.

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Real sighting data, source iNaturalist

1,029 verified observations on iNaturalist of black widow have been recorded in Alabama, most often in September, October, July.

When black widow are recorded in Alabama

Verified species, source iNaturalist

3 types of black widows recorded in Alabama

3 black widow species have a verified observation record in Alabama, each with at least 10 confirmed sightings. The full list, ranked by how often each is recorded, is below.

1 of the 3 shown is recorded as introduced to Alabama rather than native.

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    1

    Southern Black Widow

    Latrodectus mactans

    569 records
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    2

    Brown Widow

    Latrodectus geometricus

    296 recordsIntroduced
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    3

    Northern Black Widow

    Latrodectus variolus

    66 records

Plus 1 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations.

The Southern Black Widow (Latrodectus mactans) is the most commonly recorded, with 569 verified observations, about 61% of all black widows reported in Alabama. If you spot a black widow here, it is statistically most likely to be this one.

Not every one of these is originally from here. Brown Widow is recorded by iNaturalist as introduced in Alabama rather than native, so it arrived with human help rather than on its own.