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View Thread :: Identification queries :: Diptera (adults)
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Tachinidae ? => Syrphidae, Eristalis sp.
#1 Print Post
Posted on 31-08-2021 18:55

Posts: 16
Joined: 04.10.20

Hi there,

I would like to ID this fly. I really struggle with fly identification so after hours of searching, I decided to create this post.
Is it a tachinidae ?
I would be grateful if someone could help me on this and detail the characteristics that allowed the identification.

Date : 9 August 2021
Location : Geres National Park, Northern Portugal
Altitude : around 600m
Habitat : understory of a forest (Fagus, Eucalyptus). Closed habitat but right near a hiking path with open vegetation

Many thanks !
arnaudbdn attached the following image:

Edited by arnaudbdn on 01-09-2021 16:13
#2 Print Post
Posted on 31-08-2021 23:40
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Location: Berlin, Germany
Posts: 3646
Joined: 28.07.07

Tachinidae usually are much more bristly, yours is covered in soft hairs. This is a member of Syrphidae, and I bet it's genus Eristalis. To tell the many species apart a lot more details are needed, i.e. a good view of the wings (dark markings present? size of the pterostigma?), the antenna (how long are the hairs on the arista?) and the face (is there a black median stripe, and how broad?). One picture isn't enough, sorry.
Regards, Sundew
#3 Print Post
Posted on 01-09-2021 11:40

Posts: 16
Joined: 04.10.20

Hi Sundew,
Thanks a lot for you detailed answer. Surely instructive !
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05 December 2021 00:04


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23.09.21 15:29
All sorted.

16.09.21 22:24
Sorry put 5 new threads in Asilidae forum instead in Syrphidae forum, can pleas an admin move it to Syrph? THANKS, Norbert

09.09.21 07:48

09.09.21 07:47
wing ventation is totally different

03.09.21 12:51
Hi, what's the major difference between dolichopodidae and rhagionidae? Can someone help me? Thanks!

28.06.21 15:24
thx TO eklans

03.06.21 11:11
@Tony Irwin Thank you Tony! I've emailed you there Pfft

02.06.21 22:26
Rob - can you PM me with an e-mail address, and I'll send it over.

02.06.21 13:16
Hello chaps! Does anyone have a copy of: Revision of the willow catkin flies, genus Egle Robineau-Desvoidy (Diptera: Anthomyiidae), in Europe and neighbouring areas ?? I'd be ever so grateful! Rob

31.05.21 14:31
The part that got deleted is "longer, dark median stripe on thorax"

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