Cooperative Extension San Joaquin County
University of California
Cooperative Extension San Joaquin County

Posts Tagged: Western yellowjacket

Aren't You Supposed to Be Hibernating?

A western yellowjacket, Vespula pensylvanica, flies toward Algerian ivy in mid-December in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

Dec. 22 marked the winter solstice, the first day of winter. But don't tell that to the western yellowjacket, Vespula pensylvanica. It's supposed to be hibernating, not flying. But there it is flying around--and sipping nectar--from flowering Algerian...

A western yellowjacket, Vespula pensylvanica, flies toward Algerian ivy in mid-December in Vacaville, Calif. (Photo by Kathy Keatley Garvey)
A western yellowjacket, Vespula pensylvanica, flies toward Algerian ivy in mid-December in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

A western yellowjacket, Vespula pensylvanica, flies toward Algerian ivy in mid-December in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

A western yellowjacket, Vespula pensylvanica, sipping nectar from Algerian ivy in Vacaville, Calif. in mid-December. (Photo by Kathy Keatley Garvey)
A western yellowjacket, Vespula pensylvanica, sipping nectar from Algerian ivy in Vacaville, Calif. in mid-December. (Photo by Kathy Keatley Garvey)

A western yellowjacket, Vespula pensylvanica, sipping nectar from Algerian ivy in Vacaville, Calif. in mid-December. (Photo by Kathy Keatley Garvey)

Posted on Monday, December 26, 2016 at 2:24 PM

Yellowjacket or Paper Wasp?

A Western yellowjacket, Vespula pensylvanica, sipping water. Note the black antennae. (Photo by Kathy Keatley Garvey)

Western yellowjackets, nicknamed "meat bees" (as opposed to the "vegetarian honey bees") are often misidentified. A recent visitor at a camp in the Sierra Nevada mountain range witnessed a large number of wasps and stinging behavior. They crowded...

A Western yellowjacket, Vespula pensylvanica, sipping water. Note the black antennae. (Photo by Kathy Keatley Garvey)
A Western yellowjacket, Vespula pensylvanica, sipping water. Note the black antennae. (Photo by Kathy Keatley Garvey)

A Western yellowjacket, Vespula pensylvanica, sipping water. Note the black antennae. (Photo by Kathy Keatley Garvey)

A European paper wasp, Polistes dominula, soaking up sun. Note the orange antennae.(Photo by Kathy Keatley Garvey)
A European paper wasp, Polistes dominula, soaking up sun. Note the orange antennae.(Photo by Kathy Keatley Garvey)

A European paper wasp, Polistes dominula, soaking up sun. Note the orange antennae.(Photo by Kathy Keatley Garvey)

This is a European paper wasp nest tucked inside a shrub. Yellowjacket nests are often in abandoned rodent nests. (Photo by Kathy Keatley Garvey)
This is a European paper wasp nest tucked inside a shrub. Yellowjacket nests are often in abandoned rodent nests. (Photo by Kathy Keatley Garvey)

This is a European paper wasp nest tucked inside a shrub. Yellowjacket nests are often in abandoned rodent nests. (Photo by Kathy Keatley Garvey)

Posted on Friday, September 2, 2016 at 3:29 PM

It's No Vegetarian

Western yellowjacket (Vespula penyslvanica) heading toward a red-hot poker (but this variety is yellow). (Photo by Kathy Keatley Garvey)

Bee specialists like to point out that the yellowjacket is a carnivore and the honey bee is a vegetarian. They are, indeed. The yellowjacket is an aggressive predator that seeks protein-rich foods for its colony, while the honey bee--usually quite...

Western yellowjacket (Vespula penyslvanica) heading toward a red-hot poker (but this variety is yellow). (Photo by Kathy Keatley Garvey)
Western yellowjacket (Vespula penyslvanica) heading toward a red-hot poker (but this variety is yellow). (Photo by Kathy Keatley Garvey)

Western yellowjacket (Vespula penyslvanica) heading toward a red-hot poker (but this variety is yellow). (Photo by Kathy Keatley Garvey)

Western yellowjacket buries its head in a tubular flower. (Photo by Kathy Keatley Garvey)
Western yellowjacket buries its head in a tubular flower. (Photo by Kathy Keatley Garvey)

Western yellowjacket buries its head in a tubular flower. (Photo by Kathy Keatley Garvey)

Western yellowjacket foraging. (Photo by Kathy Keatley Garvey)
Western yellowjacket foraging. (Photo by Kathy Keatley Garvey)

Western yellowjacket foraging. (Photo by Kathy Keatley Garvey)

Western yellowjacket assumes the shape of a comma. (Photo by Kathy Keatley Garvey)
Western yellowjacket assumes the shape of a comma. (Photo by Kathy Keatley Garvey)

Western yellowjacket assumes the shape of a comma. (Photo by Kathy Keatley Garvey)

Bottoms up--western yellowjacket moves away from the camera. (Photo by Kathy Keatley Garvey)
Bottoms up--western yellowjacket moves away from the camera. (Photo by Kathy Keatley Garvey)

Bottoms up--western yellowjacket moves away from the camera. (Photo by Kathy Keatley Garvey)

Posted on Thursday, November 1, 2012 at 10:53 PM
 
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