Thread subject: Diptera.info :: Which Trachinid fly?

Posted by wilde on 16-09-2006 22:10
#1

Black Trachinid, 13-15 mm, during the first weeks of August in my garden. Does it has a name? And what's it's victum?

Posted by wilde on 16-09-2006 22:30
#2

Another picture:

Posted by ChrisR on 16-09-2006 22:42
#3

Tachina grossa - but where in the world is your garden? :) Victims (aka. hosts ;)) are large, hairy lepidopteran larvae :)

Posted by wilde on 16-09-2006 23:19
#4

My garden is in the Netherlands (koudekerke, Walcheren):(
I thought the T. grossa is much bigger: about 22-25 mm?

Posted by Nikita Vikhrev on 16-09-2006 23:34
#5

Chris, I have to disagree. Neither general habit, nor, for example, long 3-d antennae and short 2-nd segment is for Tachina grossa, or Tachina sp.
Nikita

Posted by Nikita Vikhrev on 16-09-2006 23:49
#6

I'd say Eurithia sp.

Posted by ChrisR on 17-09-2006 00:13
#7

Hi Nikita - Yeah you are right, my mistake - a bad ID on my part ... never try to cook dinner AND identify flies at the same time!! ;)

Posted by wilde on 17-09-2006 13:18
#8

Does this picture make it clear?
Which host is used by the Eurithia sp. ?

Edited by wilde on 17-09-2006 13:25

Posted by Nikita Vikhrev on 17-09-2006 13:49
#9

Hi Wilde.
1. Eurithia's hosts are varios Lepidoptera.
2. So far I know only one way ID surely Tachinidae by image - it is to wait for Theo;)
Nikita

Posted by ChrisR on 17-09-2006 16:44
#10

I don't think I'd accept many photographic IDs of Eurithia beyond just "Eurithia sp.", especially when the palp colour is not clear and we can't see any of the genitalia :)

Posted by Zeegers on 17-09-2006 20:34
#11

WEll, I agree with Chris that formally spoken the species might not be IDed from these pictures. However, given the fact that they are from Zeeland, I have no doubt whatsoever that this is Eu. anthophila.
Especially the last picture is already very strongly in favour of this conclusion.

So: Eurithia anthophila.


Theo

Posted by wilde on 17-09-2006 21:41
#12

Thanks Theo,
I made several photographs, also on others days of August. The flies were very often seen on the umbels of Fennel. Here is another picture of the same fly (August 6th 2006). I hope the name doesn't change.:D

Albert de Wilde

Edited by wilde on 17-09-2006 21:42

Posted by ChrisR on 17-09-2006 21:45
#13

Here in England my assumption would certainly be anthophila ... until I had the fly under the microscope and could get a 'real' fix on it :)