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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Parasitica" - Parasitoid Wasps » Cynipoidea » Rose Gall Wasps (Diplolepididae) » Rose Gall Wasps (Diplolepis) » Spiny Leaf Gall Wasp (Diplolepis polita)
Photo#384035
Leaf galls on California Rose (Rosa californica) - Diplolepis polita
Copyright © 2010 John Callender

Leaf galls on California Rose (Rosa californica) - Diplolepis polita
Carpinteria Salt Marsh, Santa Barbara County, California, USA
April 10, 2010
Size: 3-5 mm diam, w/o spikes
Here's a wider shot of the spiky gall to try to show more of the plant. I think that's another pair of leaflets sneaking into the right side of the frame, which would mean that there are at least 5 leaflets, which would mean that if the plant is either California Blackberry (Rubus ursinus), or California Rose (Rosa californica), it is most likely the former. Correct? (Update: Oops. I had that backwards. More leaflets makes it the rose, not the blackberry.)

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Leaf galls on California Rose (Rosa californica) - Diplolepis polita Leaf galls on California Rose (Rosa californica) - Diplolepis polita
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Contributed by John Callender on 10 April, 2010 - 8:51pm
Last updated 8 May, 2013 - 7:36am

Moved
Moved from ID Request.
… Joyce Gross, 11 April, 2010 - 12:12am login or register to post comments

Looking like rose
The five leaflets in the foreground and the stout, recurved thorns on a reddish stem in the background indicate Rosa californica instead of Rubus ursinus, which would have three leaflets and weak prickles on a bluish stem.
… John Pearson, 10 April, 2010 - 9:09pm login or register to post comments

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