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 Cylindromyia intermedia? --> C. brassicaria f
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| Jann Wuebbenhorst |
Posted on 14-01-2022 20:06
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Member Location: Northern Germany, Lower Saxony Posts: 606 Joined: 10.03.17 |
I found this Cylindromyia on 19th June 2021 on nutrient-poor grassland in the very east of Niedersachsen (Germany), Landkreis Lüneburg. I tried to identify it using the key of Tschorsnig & Herting (2005). But as a tachinid beginner, I find it difficult to identify all the bristles and other features mentioned in the key. Jann Jann Wuebbenhorst attached the following image:  [140.54Kb] Edited by Jann Wuebbenhorst on 15-01-2022 16:47 |
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| Jann Wuebbenhorst |
Posted on 14-01-2022 20:07
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Member Location: Northern Germany, Lower Saxony Posts: 606 Joined: 10.03.17 |
Here are my suggestions: 1. hind tibia with pv-bristles Jann Wuebbenhorst attached the following image:  [149.32Kb] |
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| Jann Wuebbenhorst |
Posted on 14-01-2022 20:09
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Member Location: Northern Germany, Lower Saxony Posts: 606 Joined: 10.03.17 |
2. crossed apical scutellar bristles present
Jann Wuebbenhorst attached the following image:  [197.52Kb] |
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| Jann Wuebbenhorst |
Posted on 14-01-2022 20:11
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Member Location: Northern Germany, Lower Saxony Posts: 606 Joined: 10.03.17 |
3. Abdomen without discal bristles
Jann Wuebbenhorst attached the following image:  [148.47Kb] |
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| Jann Wuebbenhorst |
Posted on 14-01-2022 20:12
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Member Location: Northern Germany, Lower Saxony Posts: 606 Joined: 10.03.17 |
4. Third antennal segment quite long
Jann Wuebbenhorst attached the following image:  [147.8Kb] Edited by Jann Wuebbenhorst on 14-01-2022 20:12 |
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| Jann Wuebbenhorst |
Posted on 14-01-2022 20:13
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Member Location: Northern Germany, Lower Saxony Posts: 606 Joined: 10.03.17 |
5. I'm unsure about the bristles on the middle tibia
Jann Wuebbenhorst attached the following image:  [129.45Kb] |
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| Zeegers |
Posted on 15-01-2022 10:55
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Member Location: Soest, NL Posts: 18976 Joined: 21.07.04 |
Yes, difficult genus. Antenne is longer and more orange in intermedia. If a basal scutellar bristle is present, intermedia is highly unlikely. So this is a small female brassicaria. Theo |
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| Jann Wuebbenhorst |
Posted on 15-01-2022 13:16
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Member Location: Northern Germany, Lower Saxony Posts: 606 Joined: 10.03.17 |
Thank you again, Theo! So there's a problem already in the first step of the key, where I decided for 1b (hind tibia with pv -bristles). Am I wrong with the bristles (as shown in fig. 163 in Tschorsnig & Herting)? Or is this feature not always valid? Jann Edited by Jann Wuebbenhorst on 15-01-2022 16:46 |
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| Zeegers |
Posted on 15-01-2022 14:05
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Member Location: Soest, NL Posts: 18976 Joined: 21.07.04 |
?? P. = posterior, so backside pd can never be in front of ad. Theo |
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| Jann Wuebbenhorst |
Posted on 15-01-2022 16:46
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Member Location: Northern Germany, Lower Saxony Posts: 606 Joined: 10.03.17 |
Yes, of course it is the other way round! I didn't realize that fig. 163 in Tschorsnig & Herting shows the LEFT hind tibia, my photo shows the RIGHT hind tibia - sorry. Edited by Jann Wuebbenhorst on 16-01-2022 12:04 |
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| Zeegers |
Posted on 15-01-2022 17:20
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Member Location: Soest, NL Posts: 18976 Joined: 21.07.04 |
You song again "Upside down you turn me"? Theo |
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| Jann Wuebbenhorst |
Posted on 16-01-2022 12:06
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Member Location: Northern Germany, Lower Saxony Posts: 606 Joined: 10.03.17 |
O.k., I think now I've got it. pv bristles missing. Jann Jann Wuebbenhorst attached the following image:  [263.16Kb] |
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| Zeegers |
Posted on 16-01-2022 12:39
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Member Location: Soest, NL Posts: 18976 Joined: 21.07.04 |
It is very easy to make these kind of mistakes from pictures. Glad you got it. Theo |
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