Thread subject: Diptera.info :: My second Cylindromyia (14.09.19) --> C. brassicaria
Posted by Juergen Peters on 15-09-2019 20:18
#1
Hello,
yesterday on a meadow near a forest (northwest Germany) I encountered my second
Cylindromyia ever. Unfortunately the photos are not very good, but better than those of
my first one. Every time I tried to get near to take a picture with the macro lens, the fly flew off and landed on the next marguerite two meters away... :| The fly measured about 10 mm. Is it possible to tell the species (or group of species)? I'm afraid, not...
Edited by Juergen Peters on 16-09-2019 21:28
Posted by Juergen Peters on 15-09-2019 20:19
#2
Pic #2
Posted by Juergen Peters on 15-09-2019 20:19
#3
Pic #3
Posted by Juergen Peters on 15-09-2019 20:20
#4
Pic #4
Posted by eklans on 16-09-2019 17:19
#5
Hi Juergen, should be C. brassicaria.
Cheers, Eric
Posted by Juergen Peters on 16-09-2019 21:27
#6
eklans wrote:
should be C. brassicaria.
Many thanks, Eric!
Posted by Zeegers on 22-09-2019 15:13
#7
Brassicaria is very hard to tell from brevicornis in pictures.
In females, you can assess the number of marginal bristles on the fourth (apperent third) segment): 4 in brassicaria, 6 in brevicornis. In brassicaria, the strict laterals are lacking, as well shown in the first pic. So brassicaria it is.
There has been a serious influx of C. brassicaria in NL and B this summer, soon to be published in Nederlandse Faunistische Mededelingen.
Theo
Posted by Juergen Peters on 22-09-2019 16:34
#8
Hello Theo,
many thanks for the additional informations!