Posted by Carnifex on 01-09-2019 22:23
#1
Hi,
there are apically crossed scutellar bristles, and there is some yellow on the second antennal segment, but is is enough for
C. intermedia? Found in a hilly area in Vienna.
Edited by Carnifex on 08-09-2019 09:03
Posted by Carnifex on 02-09-2019 11:06
#3
Now with details. I hope the ID as male
C. intermedia is correct?
I wonder about the definition of 'abdominal discal bristles' - how far anteriorly can the marginal bristles move, that they are not considered as discal? Because on the tergite 2 of my fly there are two bristles in the black spot, that aren't discals, or?
Mid tibia with small pd-bristle?
First tarsal segment of fore leg
Posted by Zeegers on 04-09-2019 07:20
#5
The additional pics clearly show male intermedia. Nice work.
As for your other question:
you are quite right and it is annoying.
For instance, the usage of ‘ apical, subapical lateral, subbasal’. and even ‘ second lateral’. for bristles on the scutellar margin is actually undefined. If there are only three pairs, is the middle one subbasal, lateral, subapical .... ???
It would be better to just give the number and, if necessary, describe the position of its base.
Now, returning to your question:
Yes, but this problem only occurs in Cylindromyia (in Tachinidae).
Moreover, there is no such thing as far as I know as a discal tergal bristle without a marginal tergal birstles.
Therefore
-1) it is still useful to use ‘ discal’ in Tachinidae context
-2) it is clear that in Cylindromyia we are dealing with advanced marginals.
By the way, the degree of advanceness is species specific !
Theo