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What’s Galling You? Upper Park Guided Hike

October 4, 2014 @ 10:00 am - 11:30 am

gallsOak apples, saucers, brain coral, sea urchins, red volcanoes; these are just a few of the myriad shapes that you can find on oak trees in Bidwell Park. Most notice the golf to tennis ball sized growths that adorn certain Valley Oak branches and litter the forest floor. In the spring, these are fresh and green, often with a blush of red, which earns them the nickname “oak apples.” But you wouldn’t want to bite into these apples, as you would find a worm inside (or worse, half a worm). These apples are actually galls, and those worms are larvae, juvenile forms of an insect called the California Gall Wasp. In North America there are 800 species of Cynipid Gall Wasps, a group that includes our California Gall Wasp. Come see some of the other amazing structures that other species of wasp induce and learn more about their peculiar lifestyles!Contact:
Chico Creek Nature Center
1968 East 8th Street
Chico, CA 95928
Phone: 530-891-4671
e-mail: [email protected]

$10 adults, $5 children. Registration required at



October 4, 2014
10:00 am - 11:30 am


Chico Creek Nature Center
1968 E 8th Street
Chico,United States
+ Google Map
(530) 891-4671


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