Thread subject: Diptera.info :: A tabanid

Posted by lweit on 26-07-2006 18:02
#1

Another photo of this male specimen

Louis

Posted by paqui on 28-07-2006 11:08
#2

oh my, i can only say they seem 2 different males to me

here you are male?s keys:

1- Vertex with on row of short white hairs----2
-- vertex with onme row of long white hairs, eyes with grey shor pubescence, abdomen with a wide dorsal black stripe-- A. flavoguttatus

2- Abdomen with yellow pilosity, in case it has black hairs too, they don?t form bands or defined spots---3
-- abdomen with black pilosity, forming bands or spots---5

3- abdomen with a dark stripe, narrow at least the 2 first tergites and becoming wider---- 4
-- abd black except from 2 areas yellow-reddish at the sides of tergites 2-3----A .rusticus

4- Head very wide--- A.fulvus
-- head more narrow, approx the same width of thorax---- A. loewianus

5- femora dark grey, at least at the basal half--- A latistriatus
-- femora yellow----6

6- abdomen with a wide black stripe and dark pilosity at lateral sides of tergites--- A agrestis
-- abd yellow-brown with 4 black stripes---A quadrifarius


*about quadrifarius it?s recorded from zones in mediterranean sea: spain, portugal--- russia, maybe not really common at NE france Frown
*about falvoguttatus: recorded in spain, south of france, austria, turkey.
this records info is from 2002, maybe out of date...

i have descriptions of each species, but i let Tony puts his money on wghat he wants, not mine again Grin

Posted by Zeegers on 30-07-2006 15:53
#3

Back from holiday I find these beautiful horsefly pictures.

I have little doubt that, given the locality, the species is A. rusticus.
They can be quite like latistriatus. Have a look at Alan Stubbs'plates and you will find a clear rusticus with a pair of dark vittae on tergites.
The males can have quite large yellow lateral spots on abdomen.


Theo Zeegers