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Diptera.info :: Identification queries :: Diptera (adults)
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Tachinidae, Blepharomyia angustifrons? Netherlands -> Lypha dubia
Paul Hoekstra
#1 Print Post
Posted on 25-11-2021 00:04
Member

Location: Netherlands
Posts: 58
Joined: 03.07.11

I key this specimen with some doubt to Blepharomyia angustifrons, could that be correct? 3 specimens in yellow pan trap, 12 April 2021, Renkum, Netherlands.

Thanks for any reply

waarneming.nl/media/photo/45069776.jpg
waarneming.nl/media/photo/45069777.jpg
waarneming.nl/media/photo/45069778.jpg
waarneming.nl/media/photo/45069779.jpg
waarneming.nl/media/photo/45069780.jpg
waarneming.nl/media/photo/45069781.jpg
waarneming.nl/media/photo/45069782.jpg
waarneming.nl/media/photo/45069783.jpg
Edited by Paul Hoekstra on 07-12-2021 22:20
 
Zeegers
#2 Print Post
Posted on 25-11-2021 09:06
Member

Location: Soest, NL
Posts: 16819
Joined: 21.07.04

That is very unlikely / hardly possible. Check for Phorocera (genitalia highly distinctive)

Theo
Edited by Zeegers on 25-11-2021 09:06
 
Paul Hoekstra
#3 Print Post
Posted on 26-11-2021 22:21
Member

Location: Netherlands
Posts: 58
Joined: 03.07.11

Thank you for your comment. I first also thought Phorocera, but I could not key to that genus as I could not see any hairs on the prosternum nor a shadowfold of vein M. I checked the drawings of Phorocera genitalia in Emden 1954, but I think/guess the genitalia do not match. Keying the specimens with Emden 1954 I end up with Blepharomyia pagana, maybe that is a better match than B. angustifrons.

I have added some extra photos of the wing venation, prosternum, genitalia and front and rear view of the head. I am not entirely sure if these photo are of the same specimen as the previous photos, but all 3 specimens look very similar and have the same wing venation and chaetotaxy on the head.

waarneming.nl/media/photo/45094868.jpg
waarneming.nl/media/photo/45094869.jpg
waarneming.nl/media/photo/45094870.jpg
waarneming.nl/media/photo/45094899.jpg
waarneming.nl/media/photo/45094897.jpg
waarneming.nl/media/photo/45094898.jpg

 
Zeegers
#4 Print Post
Posted on 27-11-2021 10:47
Member

Location: Soest, NL
Posts: 16819
Joined: 21.07.04

Hi Paul,

thanks for this effort. So we are making progress.
It is defintely not Blepharomyia nor Phorocera.

I am pretty sure it is the male of Lypha dubia.

Check the lappets on hind spiracle, difficult feature but highly distinctive !

Normally, you can ID this species even with binoculairs by its bronze colouration, but pan traps do not help here


Very common spring species.

Theo
 
Paul Hoekstra
#5 Print Post
Posted on 06-12-2021 22:39
Member

Location: Netherlands
Posts: 58
Joined: 03.07.11

Hi Theo,

Thank you for all your help. The feature of the lappets is not that visible on my photo's, but I think they agree with Lypha.

waarneming.nl/media/photo/45180825.jpg
Edited by Paul Hoekstra on 06-12-2021 22:39
 
Zeegers
#6 Print Post
Posted on 07-12-2021 11:23
Member

Location: Soest, NL
Posts: 16819
Joined: 21.07.04

Yes, they do !


Theo
 
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