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 dark Tachinid - Phorocera cf. grandis
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| Sundew |
Posted on 29-07-2016 01:30
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 Member Location: Berlin and Baden-Württemberg, Germany Posts: 3890 Joined: 28.07.07 |
Hi, My trip to southwestern Germany some weeks ago yielded some interesting flies. Unfortunately this Tachinid was not very patient, so I got only poor pics. Nevertheless I hope to get a name for this impressive animal. Thanks in advance, Sundew Sundew attached the following image:  [175.4Kb] Edited by Sundew on 02-08-2016 01:40 |
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| Zeegers |
Posted on 29-07-2016 08:17
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Member Location: Soest, NL Posts: 18529 Joined: 21.07.04 |
Could you be more specifici on the date ? It definitely looks like the male of Phorocera grandis, which is pretty amazing. It is a specific parasoitoid of Euproctis and ... Thaumetopoea ! I wrote a small contribution on that matter in Nederlandse Faunistische Mededelingen some years ago. Theo |
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| Sundew |
Posted on 29-07-2016 12:43
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3890 Joined: 28.07.07 |
What an interesting species! Tschorsnig & Wagenhoff (2012, http://www.nadsdi...s/TT25.pdf) describe its occurrence and behaviour in Baden-Württemberg and found it north of Stuttgart. I saw this animal on 16 June in Renningen-Malmsheim, a small town west of Stuttgart. This is the end of the flight period of P. grandis. My fly looks rather old already, the body dusting is largely gone... However, this is no proof for correct ID, and unfortunately there are no pictures showing the fore tarsus to fore tibia ratio. So we can only admit that there is quite a chance for my fly to be P. grandis. (I suppose it is a Phorocera for sure, only the species is uncertain?)
Edited by Sundew on 29-07-2016 12:44 |
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| Sundew |
Posted on 02-08-2016 01:41
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3890 Joined: 28.07.07 |
Was this helpful, dear Theo? |
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| Zeegers |
Posted on 02-08-2016 07:34
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Member Location: Soest, NL Posts: 18529 Joined: 21.07.04 |
Well, as you know there are more features that the formal ones mentioned in the official books. You know, the 'jizzy' features. A clear jizzy feature of Phorocera grandis is that the head looks big, due to the enlarged and silvery parafacial. In female more so than in male. Knowing this and the date, I have no doubt that this is Ph. grandis. Ph. assilimis is long gone, by then. Theo |
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but don't see the image in the post.
