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 Pupa from Warbler nest
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| Holenester |
Posted on 15-12-2018 17:36
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Member Location: Posts: 63 Joined: 07.12.18 |
Hi, I found this pupae burrowed among nest material of Wood Warbler nest. Is it Asilidae? Edited by Holenester on 15-12-2018 17:43 |
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| Holenester |
Posted on 15-12-2018 17:37
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Member Location: Posts: 63 Joined: 07.12.18 |
Another view:
Edited by Holenester on 15-12-2018 17:44 |
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| Holenester |
Posted on 15-12-2018 17:39
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Member Location: Posts: 63 Joined: 07.12.18 |
Ans last one, more focused on the head part:
Edited by Holenester on 15-12-2018 17:44 |
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| Tony Irwin |
Posted on 16-12-2018 11:42
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 Member Location: Posts: 7168 Joined: 19.11.04 |
Looks like it. Normally asilid larvae are found in soil, so I'd say this ended up in the nest accidentally. I assume the wood warbler was ground-nesting, as is usual for the species.
Tony ---------- Tony Irwin |
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| Quaedfliegh |
Posted on 16-12-2018 18:00
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 Member Location: Posts: 2198 Joined: 18.05.10 |
Could it be a Rhagionidea?
Greetings, Reinoud Field guide to the robber flies of the Netherlands and Belgium: https://www.jeugdbondsuitgeverij.nl/product/field-guide-to-the-robberflies-of-the-netherlands-and-belgium/ https://www.nev.nl/diptera/ |
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| Holenester |
Posted on 16-12-2018 18:14
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Member Location: Posts: 63 Joined: 07.12.18 |
I still have this pupa, preserved in alcohol. I may put here additional photo, if there is a chance to id to the family level. |
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| Quaedfliegh |
Posted on 17-12-2018 16:44
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Member Location: Posts: 2198 Joined: 18.05.10 |
I hope more colleagues will have a look at it. Usually pupae of the Asilidae have more projections at the head, but I could find one illustration in Melin 1923 of a pupa of Leptogaster cylindrica which only has two projections, similar to this one.
Greetings, Reinoud Field guide to the robber flies of the Netherlands and Belgium: https://www.jeugdbondsuitgeverij.nl/product/field-guide-to-the-robberflies-of-the-netherlands-and-belgium/ https://www.nev.nl/diptera/ |
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| Holenester |
Posted on 17-12-2018 20:28
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Member Location: Posts: 63 Joined: 07.12.18 |
On these pictures two additional projectors (below these huge) are visible. Maybe this could be useful. |
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| Holenester |
Posted on 17-12-2018 20:29
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Member Location: Posts: 63 Joined: 07.12.18 |
And another perspective: |
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| Even Dankowicz |
Posted on 13-01-2019 19:48
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Member Location: Posts: 14 Joined: 12.06.18 |
This appears to be a member of Therevidae. The supra-alar processes are elongate, whereas they are truncate and resemble a short carina in Asilidae. Furthermore, note the laterally-protruding antennal sheaths (these are more posteriorly directed in Asilidae) and the slender posterior processes, which are thickened and thornlike in Asilidae. Stubbs & Drake 2001 have a good key to families of British pupae, and in this case its diagnosis would have been correct (it doesn't always work in other parts of the world). I wouldn't be surprised if somebody more familiar with Therevidae could identify this further. |
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| Paul Beuk |
Posted on 18-01-2019 09:07
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 Super Administrator Location: Posts: 19208 Joined: 11.05.04 |
May I suggest Scenopinidae? Perhaps also more likely to be found in a bird's nest?
Paul - - - - Paul Beuk on https://diptera.info |
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| Even Dankowicz |
Posted on 25-01-2019 04:08
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Member Location: Posts: 14 Joined: 12.06.18 |
I recall reading somewhere that elongate supra-alar processes like we see here are limited to Therevinae (which has certainly been my experience with specimens). I'll see if I can find the reference soon. |
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| Paul Beuk |
Posted on 29-01-2019 11:55
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Super Administrator Location: Posts: 19208 Joined: 11.05.04 |
Comparing with Manual of Nearctic Diptera I concur with Therevidae.
Paul - - - - Paul Beuk on https://diptera.info |
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but don't see the image in the post.
