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 Tetanocera ferruginea, Sciomyzidae, Hungary
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| Xespok |
Posted on 26-07-2006 16:54
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 Member Location: Debrecen, Hungary Posts: 5550 Joined: 02.03.05 |
I do not have a lateral image here, so I am puzzled whether this is a Sciomyzidae, a Suillia or maybe some Scathophagidae.
Xespok attached the following image:  [70Kb] Edited by Xespok on 11-11-2006 13:31 |
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| Nikita Vikhrev |
Posted on 26-07-2006 17:18
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 Member Location: Moscow, Russia Posts: 9223 Joined: 24.05.05 |
Sciomyzidae. I think Tetanocera.
Nikita Vikhrev - Zool Museum of Moscow University |
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| Paul Beuk |
Posted on 26-07-2006 19:23
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 Super Administrator Location: Netherlands Posts: 19229 Joined: 11.05.04 |
Judging from the setae on the legs, the way the glossy and matt parts of the froms are distributed and the soze of the dark brown patch on the back of the head I would say T. freyi. Anyone another suggestion?
Paul - - - - Paul Beuk on https://diptera.info |
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| Xespok |
Posted on 29-07-2006 21:43
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Member Location: Debrecen, Hungary Posts: 5550 Joined: 02.03.05 |
Thx, Paul I put this down as T. cf freyi, because this species is not supposed to occur in Hungary based on the fauaneur.org database, but this family is little studied in Hungary. Species recorded here are: arrogans, elata, ferruginea, fuscinervis, hyalipennis, montana, punctifrons, robusta and silvatica. Edited by Xespok on 29-07-2006 21:53 |
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| Nikita Vikhrev |
Posted on 06-11-2006 21:42
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Member Location: Moscow, Russia Posts: 9223 Joined: 24.05.05 |
Posterior setas on f2 and f3 absent - not arrogans, montana, punctifrons, robusta. Frons not completely shining - not hyalipennis. Anterior margin of frons shining - not elata, ferruginea, fuscinervis. Either frey or silvatica. But on your image is clearly visible that brown part of occipital spot is subtriangular which divides T. sylvatica from T. frey. So, Tetanocera sylvatica. Nikita Vikhrev - Zool Museum of Moscow University |
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| Xespok |
Posted on 07-11-2006 11:30
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Member Location: Debrecen, Hungary Posts: 5550 Joined: 02.03.05 |
Thx Nikita, I'll have some more Sciomyzidae images for you  |
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| Kahis |
Posted on 07-11-2006 11:42
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 Member Location: Helsinki, Finland Posts: 1999 Joined: 02.09.04 |
Sorry, ut I have to disagree. I don't think the anterior margin of frons is shining. The frontal stripe is shing and runs to the anterior margin, but there is no shining transvarse band at the anterior margin, only a brown band.
Kahis |
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| Nikita Vikhrev |
Posted on 07-11-2006 15:02
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Member Location: Moscow, Russia Posts: 9223 Joined: 24.05.05 |
I can't neither agree nor disagree with Kahis. My test - this damned frons shining/not shining is very doubtfull feature. I choised T. sylvatica mostly because Paul chiosed T. frey, a very similar species to T.sylvatica (both with frons anteriory shining). But still, it is not common image with visible posterior sides of f2 and f3, which permits to exclude arrogans, montana, punctifrons, robusta. Frons not completely shining - not hyalipennis. Wings without dark costal margin - not elata. So, choise between ferruginea, fuscinervis and silvatica, or if exclude sylvatica - ferruginea, fuscinervis. Ok, let us regard ferruginea and fuscinervis. It leads us to contradicted results, I think. According your description, Jere - frontal stripe "linear and shining" - ferruginea. But t3 with only one apical seta - fuscinervis. Well, it is good image and good illustration why there isn't any Tetanocera in our Gallery  Nikita Nikita Vikhrev - Zool Museum of Moscow University |
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| Kahis |
Posted on 07-11-2006 15:41
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Member Location: Helsinki, Finland Posts: 1999 Joined: 02.09.04 |
Having checked some keys I definitely think it is T. ferruginea. The apical setae are rather variable and many ferruginea (checked from genitalis) have only one strong preapical. The frontal stripe is very different in fuscinervis. One good (but not 100% reliable) character is the number of ad setae on hind femur: 3-4 in ferruginea, 2 in fuscinervis. The frons shining/not shining is very easy to use use you have seen the various forms. Kahis |
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| Nikita Vikhrev |
Posted on 07-11-2006 16:01
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Member Location: Moscow, Russia Posts: 9223 Joined: 24.05.05 |
Thank you Kahis.
Nikita Vikhrev - Zool Museum of Moscow University |
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| Xespok |
Posted on 11-11-2006 13:30
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Member Location: Debrecen, Hungary Posts: 5550 Joined: 02.03.05 |
Kahis, thx for your expert opinion. I tried to key this species, but I was lost how tho interpret this shiny thing on the frons. Obviously this is one of those characteristics, which are easy if you know several species already. |
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but don't see the image in the post.