Thread subject: Diptera.info :: Cylindromyia intermedia? --> C. brassicaria f
Posted by Jann Wuebbenhorst on 14-01-2022 20:06
#1
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
Edited by Jann Wuebbenhorst on 15-01-2022 16:47
Posted by Jann Wuebbenhorst on 14-01-2022 20:07
#2
Here are my suggestions:
1. hind tibia with pv-bristles
Posted by Jann Wuebbenhorst on 14-01-2022 20:09
#3
2. crossed apical scutellar bristles present
Posted by Jann Wuebbenhorst on 14-01-2022 20:11
#4
3. Abdomen without discal bristles
Posted by Jann Wuebbenhorst on 14-01-2022 20:12
#5
4. Third antennal segment quite long
Edited by Jann Wuebbenhorst on 14-01-2022 20:12
Posted by Jann Wuebbenhorst on 14-01-2022 20:13
#6
5. I'm unsure about the bristles on the middle tibia
Posted by Zeegers on 15-01-2022 10:55
#7
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
Posted by Jann Wuebbenhorst on 15-01-2022 13:16
#8
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
Posted by Zeegers on 15-01-2022 14:05
#9
??
P. = posterior, so backside
pd can never be in front of ad.
Theo
Posted by Jann Wuebbenhorst on 15-01-2022 16:46
#10
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
Posted by Zeegers on 15-01-2022 17:20
#11
You song again "Upside down you turn me"?
Theo
Posted by Jann Wuebbenhorst on 16-01-2022 12:06
#12
O.k., I think now I've got it.
pv bristles missing.
Jann
Posted by Zeegers on 16-01-2022 12:39
#13
It is very easy to make these kind of mistakes from pictures. Glad you got it.
Theo