Diptera.info

Posted by Tor S on 13-02-2012 10:53

Hello

In May last year I found, and catched, two horse flies.
I have tried to find what species this is.
The first horse fly I think can be Hybomitra bimaculata
I will load three pics here so it will be easier to study the horse fly

Is there anyone who can help?

Edited by Tor S on 13-02-2012 17:33

Posted by Tor S on 13-02-2012 11:03

The next horsefly come here.
I'm not sure on this fly.
It looks different than the first one.
It has more hair on body. The yellow patterns on the side of tergit one,two and three are hidden under the wings.

Here is pic no.1

Posted by Tor S on 13-02-2012 11:08

fly no 2 and pic no 3

What specie the second fly is I'm not sure.
I have been thinking it can be the H. montana???

Please try to help. I thought that horseflies where easier to determine :|

Posted by libor on 13-02-2012 12:15

Please, add enlarged pictures No. 2 and 3 of both specimens. From pics 2 I need to see structure of lower callus and the close part of subcallus. From pics 3 just antennae and palpi. I thing both specimens should be Hyb. nitidifrons confiformis. Did you got them in early spring?
Libor

Edited by libor on 13-02-2012 12:15

Posted by Tor S on 13-02-2012 12:23

Hi Libor

I got these flies May 30th last year in south east part of Norway, about 120 km SE Oslo.

New picture will be added asap.

Posted by Tor S on 13-02-2012 12:50

Hi Libor

Here is picture of Hyb. sp. Horsefly no 1- palp and antenna

Posted by Tor S on 13-02-2012 12:51

#10

Here is picture of Hyb. sp. Horsefly no 1- lower callus and subcallus.

Posted by Tor S on 13-02-2012 13:34

#11

Here is picture of Hyb. sp. Horsefly no 2- palp and antenna

Edited by Tor S on 13-02-2012 13:35

Posted by Tor S on 13-02-2012 13:39

#12

picture of Hyb. sp. Horsefly no 2- lower callus and subcallus

Edited by Tor S on 13-02-2012 14:00

Posted by libor on 13-02-2012 15:26

#13

See small brownish-shinning areas under lower callus - an uniqie feature for European specimens of Hybomitra nitidifrons confiformis. Also your date of trapping agrees. This species is a really spring species.
BTW: thanks for precisely photographed needed details. It is easier to try to get ID!
Libor

Posted by Tor S on 13-02-2012 17:40

#14

libor wrote:
See small brownish-shinning areas under lower callus - an uniqie feature for European specimens of Hybomitra nitidifrons confiformis. Also your date of trapping agrees. This species is a really spring species.
BTW: thanks for precisely photographed needed details. It is easier to try to get ID!
Libor

Thanks a lot Libor :)
This two flies has been to difficult for me.