Species

Latrodectus hesperus (Western black widow)

Latrodectus hesperus. Photo: (c) Marshal Hedin, some rights reserved (CC BY-NC-SA)

iNaturalist • Wikipedia

Latrodectus hesperus, the western black widow spider or western widow, is a venomous spider species found in western regions of North America. The female’s body is 14–16 mm (1/2 in) in length and is black, often with an hourglass-shaped red mark on the lower abdomen. This “hourglass” mark can be yellow, and on rare occasions, white. The male of the species is around half this length and generally a tan color with lighter striping on the abdomen….

Humboldt Life
- Kingdom: Animalia (Animals)
  - Phylum: Arthropoda (Arthropods)
    - Subphylum: Chelicerata (Chelicerates)
      - Class: Arachnida (Arachnids)
        Order: Araneae (Spiders)
        Suborder: Araneomorphae (Typical spiders)
        Infraorder: Entelegynae (Entelegyne spiders)
        Superfamily: Araneoidea (Araneoid spiders)
        Family: Theridiidae (Cobweb spiders)
        Genus: Latrodectus (Widow spiders)
        Species: Latrodectus hesperus (Western black widow)

Sightings

Where in Humboldt

Discussion

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