2 Types of Black Widows in Maryland

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

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2 types of black widows have a verified observation record in Maryland. The most frequently recorded are Northern Black Widow and Southern 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

962 verified observations on iNaturalist of black widow have been recorded in Maryland, most often in June, May, July.

When black widow are recorded in Maryland

Verified species, source iNaturalist

2 types of black widows recorded in Maryland

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

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    1

    Northern Black Widow

    Latrodectus variolus

    482 records
  • No openly licensed photo yet
    2

    Southern Black Widow

    Latrodectus mactans

    369 records

Plus 2 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations.

The Northern Black Widow (Latrodectus variolus) is the most commonly recorded, with 482 verified observations, about 57% of all black widows reported in Maryland. If you spot a black widow here, it is statistically most likely to be this one.