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Episyrphus balteatus in rotholes
#1 Print Post
Posted on 05-09-2018 16:01
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Location: York, U.K.
Posts: 276
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
Leprechaun on tour
#2 Print Post
Posted on 05-09-2018 16:05
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Location: York, U.K.
Posts: 276
Joined: 06.07.09

Here is a pic of the specimen!
Gnats2meetu attached the following image:

Bobby D
Leprechaun on tour
Tony Irwin
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Posted on 05-09-2018 21:48
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Location: Norwich, England
Posts: 5871
Joined: 19.11.04

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 Irwin
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Posted on 07-09-2018 09:03
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Location: York, U.K.
Posts: 276
Joined: 06.07.09

@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 šŸ˜œšŸ˜œšŸ˜œšŸ˜œ
Bobby D
Leprechaun on tour
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