Diptera.info :: Identification queries :: Diptera (adults)
 Lauxaniidae (?) at dead caterpillar of Cydalima perspectalis (15.06.21) --> Lonchaeidae
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| Juergen Peters |
Posted on 16-06-2021 16:49
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 Member Location: northwest Germany Posts: 14297 Joined: 11.09.04 |
Hello, many tiny flies met at a dead caterpillar of a Box-tree Moth on a leaf near a Buxus bush in our garden yesterday (northwest Germany). They looked like Calliopum aeneum/simillimum, but were considerably smaller, only about 2.5 mm. What are they? Juergen Peters attached the following image:  [161.16Kb] Edited by Juergen Peters on 16-06-2021 21:01 Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Juergen Peters |
Posted on 16-06-2021 16:49
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Member Location: northwest Germany Posts: 14297 Joined: 11.09.04 |
Pic #2
Juergen Peters attached the following image:  [165.52Kb] Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Juergen Peters |
Posted on 16-06-2021 16:49
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Member Location: northwest Germany Posts: 14297 Joined: 11.09.04 |
Pic #3
Juergen Peters attached the following image:  [155.38Kb] Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Jan Maca |
Posted on 16-06-2021 19:59
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Member Location: Posts: 1275 Joined: 25.03.10 |
The flies seem to be Lonchaeidae. For similar behavior of lonchaeids see Dobson, J. R. 1992: Are adult Lonchaeidae (Diptera) specialized kleptoparasites of spiders’ prey? British Journal of Entomology and Natural History, 5: 33-34. Also Fig.1 in https://home.czu.cz/storage/515/52373_Lonchaeidae-Krkonose.pdf |
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| Iain MacGowan |
Posted on 16-06-2021 20:15
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 Member Location: Perth, Scotland Posts: 460 Joined: 25.11.04 |
How interesting to see so many together "hunting in a pack"! they all seem to be females. Is there any chance there are still some about that you could photo or capture? Iain Iain MacGowan |
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| Juergen Peters |
Posted on 16-06-2021 21:01
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Member Location: northwest Germany Posts: 14297 Joined: 11.09.04 |
Thank you, Jan! @Iain: That scene occured in my garden, so I can take a look there nearly everyday. Will be a big luck, though, to see such happening again... Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| Juergen Peters |
Posted on 16-06-2021 22:42
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Member Location: northwest Germany Posts: 14297 Joined: 11.09.04 |
Hello, this fly just visited the light in garden. I am not sure, if it is the same species. Juergen Peters attached the following image:  [107.02Kb] Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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