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Todd_Boland St. John's, NL(Zone 5b) Jul 05, 2009

Seen these small guys around...seen maggots in the iris flowers...could this be the culprit?

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Post #6781231
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claypa West Pottsgrove, PA(Zone 6b) Jul 05, 2009

Not sure about the maggots but it looks like the Urophora quadrifasciata fruitflies that were introduced to eat knapweed. But, maybe something else?

http://www.nysaes.cornell.edu/ent/biocontrol/weedfeeders/urophora_quad.html

http://search.pbase.com/search?q=urophora&c=sp

Post #6781328
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suunto Sinks Grove, WV Jul 05, 2009

I agree with claypa; I was about to post nearly the same information. Most (if not all) maggots found in iris rhizomes appear to be secondary invaders of damaged/decaying tissues rather than being the initial cause of damage.

Post #6781373
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Todd_Boland St. John's, NL(Zone 5b) Jul 05, 2009

The maggot in my siberian iris are feeding on the buds...especially the stamens. They are not the same iris that burrows into the rhizomes of bearded iris.

Meanwhile, I think you have the fly ID'ed!

Post #6781681
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suunto Sinks Grove, WV Jul 05, 2009

Could you submit a photo or two of the bud feeders?

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Todd_Boland St. John's, NL(Zone 5b) Jul 05, 2009

I'll try to get a pic in the next couple of days.

Post #6781711
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