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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) » Diplolepis spinosa
Photo#381518
twig gall on wild rose - Diplolepis spinosa
Copyright © 2010 John Pearson

twig gall on wild rose - Diplolepis spinosa
Ackworth, Warren County, Iowa, USA
April 3, 2010
Size: ~25 mm diameter
Spiny galls on the twigs of a small wild rose (possibly Rosa blanda) in a grassy roadside. I found several larvae inside when I cut it open, some live and some dead. I saved a gall and will see if anything emerges later.

Images of this individual: tag all
twig gall on wild rose - Diplolepis spinosa twig gall on wild rose - Diplolepis spinosa twig gall on wild rose - Diplolepis spinosa wasps emerged from spiny rose stem galls - Diplolepis spinosa
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Contributed by John Pearson on 3 April, 2010 - 3:31pm
Last updated 5 August, 2010 - 6:28pm

Moved
Moved from ID Request.
… John Pearson, 4 April, 2010 - 12:57pm login or register to post comments

Diplolepis spinosa
Large multichambered stem gall found on Rosa blanda. I am actually quite interested in the contents that will be emerging from this...would it be possible for you to take some pictures of the wasps that emerge?
… Miles Zhang, 4 April, 2010 - 8:34am login or register to post comments

 
Yes
I will be happy to get photos of anything that emerges. Thanks for your ID!
… John Pearson, 4 April, 2010 - 12:58pm login or register to post comments

 
Emerged
The wasps emerged and I just added a fourth photo showing a view of two individuals through the plastic rearing bottle (see comments on that page). I will get better photos later!

I know the caution that these might be parasitoids instead of the gallmaker, so let me know what you think.
… John Pearson, 15 April, 2010 - 8:42am login or register to post comments

 
more photos
I managed to pluck an individual from the bottle later that same day and got three photos of a male (4 mm long, black, no ovipositor) which I have added above.
… John Pearson, 20 April, 2010 - 6:59pm login or register to post comments

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