Thread subject: Diptera.info :: Villeneuvia aestuum

Posted by Stephane Lebrun on 13-07-2009 20:41
#1

Found today on sea side, what I have identified as Villeneuvia aestuum, maybe to complete this thread.
Several specimen were running on the wet sand.

Date : July 13 2009
Location : Saint Jouin-Bruneval (76) - FRANCE
Size : 6-8 mm.

Posted by Stephane Lebrun on 13-07-2009 20:42
#2

More dorsal view :

Posted by Stephane Lebrun on 13-07-2009 20:43
#3

Here we can see the typical approximated vibrissal angles :

Posted by Stephane Lebrun on 13-07-2009 20:48
#4

Another specimen with more setae on legs :

Posted by javanerkelens on 13-07-2009 20:52
#5

Just great !!!!
And indeed no orbital setae

Joke :)

Posted by jorgemotalmeida on 13-07-2009 20:52
#6

i assume this is a rare sight. N'est ce pas, Stéphane? ;)

Posted by Stephane Lebrun on 13-07-2009 22:44
#7

By its specific habitat it is of course not frequent to see this species, but like it is written, I assume it can be "locally frequent" on the Atlantic coast. I have found 5 females, and 0 male. I have to find the males. And if I can, some Neolimnophora would be welcome too ! I also found an Aphrosylus (Dolichopodidae), who attracted my attention by making some flashing white spots on a rock. I didn't know that genus, making signals like Poecilobothrus, but with its palps ! I must return to the beach tomorrow...

Posted by jorgemotalmeida on 13-07-2009 22:46
#8

:) But you have at least one Neolimnophora ;) . Maybe you will find other than N. virgo... then let us know.

Posted by jorgemotalmeida on 13-07-2009 23:30
#9

I would like to see a photo of the habitat, please.

Did you find any Tethina spp. as well?

Posted by Stephane Lebrun on 14-07-2009 12:03
#10

No Tethina. Here is the habitat :

Posted by Stephane Lebrun on 14-07-2009 12:06
#11

The right side (toward the breakwater). Hundreds (Thousands) of Aphrosylus on thsee big rocks.

Posted by jorgemotalmeida on 14-07-2009 14:36
#12

Merci, Stéphane! Any chance to give the detail of location in google maps??... perhaps that beach is located somewhere here:

http://maps.googl...h&z=15

Posted by Stephane Lebrun on 14-07-2009 19:47
#13

It is here 15 km at north of Le Havre, also known as "Antifer port".
Today I managed to catch three males, well more dynamic than females, always in movement. They touch and go on the sand, never stay more than 1-2 sec in rest. They are darker and slender than females.

Here are two bad pictures :

Posted by Stephane Lebrun on 14-07-2009 19:48
#14

Second picture, pinned specimen :