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larose forest photos | all galleries >> INSECTS (INSECTA) >> Insect Galls > Goldenrod gall and Goldenrod Gall Fly
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Goldenrod gall and Goldenrod Gall Fly
Christine Hanrahan

Goldenrod gall and Goldenrod Gall Fly

The top photo, taken this morning, shows a Goldenrod gall. The gall is formed when the Goldenrod Gall Fly (bottom photo), lays an egg in the stem of a goldenrod. The stem grows around the intrusion and forms a ball-like gall. The egg hatches into a larva which spends the winter there and in late spring hatches into the fly in the bottom photo. However... some birds, squirrels and mice all find the larva delicious and will gnaw or peck holes into the gall and extract it.


other sizes: small medium large original
Fay Stout25-Jan-2011 12:30
I am always learning from you!
Mieke WA Minkjan13-Jan-2011 07:23
real wildlife on the millimetre..
thank you for the explanation Christine
Marielou Dhumez12-Jan-2011 15:12
EXCELLENT !!!!
carol j. phipps12-Jan-2011 00:32
Excellent portrait of a life system.
Jola Dziubinska11-Jan-2011 20:07
A big gate for the little larva, interesting story, didn't know about this species. V.
Margot W11-Jan-2011 16:25
I always wondered what the little gall fly looked like. I have always called them a wasp. Am I wrong or are there wasps too?
Very nicely displayed.
LynnH11-Jan-2011 16:10
I don't think anyone in the challenge will come up with a more unusual gate. This is a good one!
globalgadabout11-Jan-2011 15:42
an intriguing tale of this fly's life cycle..well visualized too..
Mairéad11-Jan-2011 13:49
You are a mine of information when it comes to nature and wildlife. Very nicely presented images.
Patricia Kay11-Jan-2011 11:40
Wonderful image and info Christine...BV
Julie Tremblay11-Jan-2011 10:56
I knew about the gall, but had no idea what the fly looked like. Great photodocumentation!
Stephanie11-Jan-2011 10:51
Fascinating pictorial duo! Thanks for the information! V :)
Janice Dunn11-Jan-2011 10:27
Very interesting Christine - 2 good photos here
monica memoli11-Jan-2011 10:04
Smart interpretation. v
Margaret Lew11-Jan-2011 08:24
So interesting! A truly unusual entry for the challenge!
Joanne Kamo11-Jan-2011 05:32
Fabulous image and fits the challenge perfectly! The information along with photos is fascinating!
J. Scott Coile11-Jan-2011 04:33
Very well done. A real learning tool.
princess11-Jan-2011 04:11
Very creative. Excellent work. V.
Cindi Smith11-Jan-2011 03:58
Gateway to another world! :)
Carl Carbone11-Jan-2011 03:35
Very clever representation of a gate! V
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