Diptera.info :: Identification queries :: Diptera (adults)
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 Same Tachinidae or not?
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| Nikita Vikhrev |
Posted on 18-05-2006 16:15
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 Member Location: Moscow, Russia Posts: 9282 Joined: 24.05.05 |
Moscow, park, 18 may, in mass, 7-9mm. Looks for me as Phorocera obscura from 13may, same city, place in 3-4 km, thread http://www.diptera.info/forum/viewthread.php?forum_id=5&thread_id=1654 I can't find sugnifical difference, but all Tachinidas from 13may was between 5-6mm. Nikita Nikita Vikhrev attached the following image:  [155.44Kb] Nikita Vikhrev - Zool Museum of Moscow University |
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| Zeegers |
Posted on 18-05-2006 17:52
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Member Location: Soest, NL Posts: 18695 Joined: 21.07.04 |
Hi Nikita It is Phorocera obscura, as suspected by you. Parasitic insects are notorious for the variability when it comes to length. Bombyllidae even more so than Tachinidae. So don't bother too much about size: 6 mm. or 8 mm. is not of significance. (6 or 16 mm. is). Theo |
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| Robert Nash |
Posted on 18-05-2006 18:16
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Member Location: Ulster Museum, Belfast, Ireland Posts: 288 Joined: 11.11.05 |
Hi Zeegers (and all) Carrion feeding (sarcosaprophagous)Diptera also vary in size often dramatically. I just had a series of Lucilia sericata (Calliphoridae) from a single (Istanbul) trap varying in length from a tiny 3mm. to 8mm. This may be due to either larva being underfed on small fragments of food or in intense competition in a larval mass. In such masses the temperature can be very high. I also remember reading a paper on bred Tachinidae in which it was claimed the chaetotaxy of the emergent individuals varied with size. Robert |
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| Nikita Vikhrev |
Posted on 18-05-2006 19:20
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Member Location: Moscow, Russia Posts: 9282 Joined: 24.05.05 |
Thank you. Well, I'll try to get rid of size doubts. Nikita Nikita Vikhrev - Zool Museum of Moscow University |
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| Nikita Vikhrev |
Posted on 18-05-2006 23:27
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Member Location: Moscow, Russia Posts: 9282 Joined: 24.05.05 |
 In my key Phorocera obscura has unusualy wide size range 4-11mm!
Nikita Vikhrev - Zool Museum of Moscow University |
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