Thread subject: Diptera.info :: Tachinidae, Bessa selecta

Posted by Renko on 13-06-2017 21:27
#1

Hello,

A Tachinidae found in North of France, Oxelaere, the 13 june 2017, on a Rosa sp., in a garden
Maybe a Bessa parallela ?


Greetings,

Thomas

Edited by Renko on 14-06-2017 21:14

Posted by Renko on 13-06-2017 21:27
#2

2nd picture

Posted by Renko on 13-06-2017 21:27
#3

3rd picture

Posted by Zeegers on 14-06-2017 08:04
#4

It has discal bristles, so should be B. selecta.

Theo

Posted by Renko on 14-06-2017 18:32
#5

Thanks you very much, Theo ! :D
I don't understand the criteria with the discal bristle, it look similar to the Bessa parallela I post the other day
But it was near lots of Symphyta larva

Posted by Zeegers on 14-06-2017 18:45
#6

Focus on the third tergite (second visible tergite).
The feature, is however, not 100 % but there is no better (known)

Moreover, the Symphyta larvae demonstrate that I am right !
Thanks for this info.

Theo


Posted by Renko on 14-06-2017 18:50
#7

Thanks you for your help, Theo !
The discal part of the tergite is "the edge of the tergite" ?
because if it is the case, on the other one I also see 2 discal setae on tergite 3

Posted by Zeegers on 14-06-2017 19:15
#8

No ! Discal is middle, so not basal, not apical, but in between.

On the edge are ... marginals (nomen est omen !)

Theo

Posted by Renko on 14-06-2017 21:14
#9

Ok, Theo ! That way clearer to me now ! :)