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Diptera.info :: Miscellaneous :: General queries
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Episyrphus balteatus in rotholes
Gnats2meetu
#1 Print Post
Posted on 05-09-2018 16:01
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Location: York, U.K.
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Joined: 06.07.09

Heya guys does anyone know if Episyrphus balteatus ever uses heavily decomposed rot holes as pupation sites? I've seen the pupae on leaf blades online so am a bit confused. I've found quite a lot in Fraxinus today with the pupae also! I'm guessing that the tree was heavily infested with aphids? I received a limb with heart rot all through the middle and the adults emerging on mass and dying. Its almost like they emerged through stress.
Edited by Gnats2meetu on 07-09-2018 09:03
Bobby D
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Gnats2meetu
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Posted on 05-09-2018 16:05
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Here is a pic of the specimen!
Gnats2meetu attached the following image:


[118.15Kb]
Bobby D
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Tony Irwin
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Posted on 05-09-2018 21:48
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Not something I've come across before, but I believe most of what we know of balteatus breeding is from crops in open fields, and we know far less about what it may do in woodland when feeding on tree aphids. Although they often pupate on leaves, I have seen pupae tucked away in more sheltered spots. And if fully-fed larvae are seeking relatively dry sheltered conditions, a tree rot hole may be a better bet than braving the Cork climate! Wink
Tony
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Tony Irwin
 
Gnats2meetu
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Posted on 07-09-2018 09:03
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@Tony Thanks a million for the help mate. That's what we thought alright. I was utterly shocked to find so many to be honest. Just moved to York now mate! Delighted to be here Pfft 😜😜😜😜
Bobby D
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