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2021 Spider Fest BioBlitz

Monday, August 2, 2021 - 12:00pm to Sunday, August 8, 2021 - 11:55pm

A woman taking a photograph outdoors.We need help to find & photograph Utah spiders!

Did you know Utah is home to over 600 species of spiders? Spiders are important members of the ecosystem—keeping insect populations in check. We're curious how many Utah spiders you can find!

What: Celebrate Antelope Island State Park's annual Spider Fest by joining NHMU's statewide iNaturalist spider bioblitz

When: August 2-8, 2021

How: Joining is easy! Adventure on your own & take photos of the spiders you find - then post them to iNaturalist. Your observations will be automatically added to our online BioBlitz.

Where: Anywhere in Utah! Spiders can live in many environments—look for them inside your home, around your neighborhood or on hikes.

Goal: Broaden statewide record of spiders in Utah. Last year, citizen scientists documented over 40 species in 16 counties during Spider Fest - how many can we find this year?

Ideal age groups: Adults, Families (children of all ages), K-12 students (14 - 17 years), College & Graduate students

Resources:

2020 Spider Fest Highlights:

An illustration of a spider on a web.
An illustration of a spider on a web.

During the 2020 Spider Fest, observers like you found over 40 species of spiders in 16 counties, including some first records on iNaturalist in Utah! Here are some highlights:

  • Sierra Dome Spider-While this species of sheet weaver is found commonly along the west coast, this observation is the first iNaturalist photo in Utah!

  • Red-and-white Asagena- This species of cobweb spider is uncommonly seen in UT, and this record is the second ever on iNaturalist in the state.

  • Diverse Feather-legged Spider-A species of cribellate orb weaver known to live in UT, but rarely photographed.


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