California Gall Wasp
( Andricus quercuscalifornicus )


2011-0820-EB410001-HYM01413-Andricus_quercuscalifornicus[1544h33s,F,C,gall-tree-oak]{EXD}-G.jpg

PHOTO COMMENT

IDENTIFICATION
Identification:Andricus quercuscalifornicus
(Bassett ,1881 )
Common Name:California Gall Wasp
Life Stage:(C) colony

PHYLOGENY

Phylum:Arthropoda
Class:Insecta
Superorder:Holometabola
Order:Hymenoptera
Suborder:Apocrita
Family:Cynipidae
Subfamily:Cynipinae
Tribe:Cynipini
Genus:Andricus
Taxon Code:HYM01413
ITIS/TSN:705704

LOCATION DETAILS
Location Name
Pleasanton Ridge Regional Park, Pleasanton Ridge Regional Park, Pleasanton Ridge Regional Park, Foothill Road, Pleasanton, CA, Sunol
County:Alameda County
ECI Site#:CAEB410000
Open Space Location:Pleasanton Ridge Regional Park

RECOGNITION
Body Length
Galls can be up to 8 by 12 cm. Adult wasps are among the largest cynipids, at around 5mm.

BIOLOGY
Host
White Oaks
Importance
Many other insects, especially other wasp species, are parasites, inquilines, and hyperparasites of this wasp.
Range
Southern Washington through Oregon and California to northern Mexico.
Importance
Many other insects, especially other wasp species, are parasites, inquilines, and hyperparasites of this wasp.
Development
Females lay eggs on stems. After the eggs hatch, galls develop around the larvae, which grow inside the galls while feeding on the gall material. Only parthenogenetic females are known for this species.

CREDITS
Photographer
Eddie Dunbar
Insect Sciences Museum of California

References
Species Andricus quercuscalifornicus - California Gall Wasp. (http://bugguide.net/node/view/130468). Accessed March 12, 2016. .
ITIS.
Russo, Ron. Field Guide to Plant Galls of California and Other Western States. California Natural History Guides. University of California Press. 2006.


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