Diptera.info :: Family forums :: Syrphidae
Who is here? 1 guest(s)
 Black Paragus.
|
|
| Pietro |
Posted on 10-11-2008 15:35
|
|
Member Location: Alghero Sardinia Italy Posts: 973 Joined: 16.09.06 |
Uri, Sardinia 14/06/2008 dimensions: around 5 mm. Peragus female, ID possible? Pietro attached the following image:  [133.03Kb] Ciao Pietro |
|
|
|
| Pietro |
Posted on 10-11-2008 15:36
|
|
Member Location: Alghero Sardinia Italy Posts: 973 Joined: 16.09.06 |
Photo 2
Pietro attached the following image:  [133.14Kb] |
|
|
|
| Pietro |
Posted on 10-11-2008 15:36
|
|
Member Location: Alghero Sardinia Italy Posts: 973 Joined: 16.09.06 |
Photo 3
Pietro attached the following image:  [133.62Kb] |
|
|
|
| Andre |
Posted on 10-11-2008 20:46
|
 Member Location: Tilburg, the Netherlands Posts: 2111 Joined: 18.07.04 |
Interesting (but difficult)... There are not so many Paragus (s.str.) species where female have a lacking facial stripe, like in this case. Still, ID based on a picture is risky! Paragus can be very variable, in males as well as females. Possibly this is Paragus quadrifasciatus female. But I stay in doubt for some reasons. So that's as far as my guess goes... Maybe.. if you have a sharp and close-up picture from the side of the tip of her abdomen, a certain ID can be made. Better is, to collect them (and don't forget to collect the males with them!  )
Edited by Andre on 10-11-2008 20:47 |
 |
|
| pierred |
Posted on 11-11-2008 06:43
|
 Member Location: Paris (France) Posts: 1451 Joined: 21.04.05 |
Hello, Andre wrote: Possibly this is Paragus quadrifasciatus female. But I stay in doubt for some reasons. In Van Veen's key, it keys out rather directly to P. quadrifasciatus. What are your reasons to doubt? Pierre Duhem |
|
|
|
| Pietro |
Posted on 11-11-2008 18:25
|
|
Member Location: Alghero Sardinia Italy Posts: 973 Joined: 16.09.06 |
Thanks André, hello Pierre sorry, I do not have other pictures and I don’ t have captured the insect. I think your diagnosis is most probable, I have caught a male very similar in an other occasion identified as Paragus quadrifasciatus (on specimen) by Daniele Sommaggio. Ciao Pietro |
|
|
|
| Andre |
Posted on 11-11-2008 23:23
|
|
Member Location: Tilburg, the Netherlands Posts: 2111 Joined: 18.07.04 |
pierred wrote: Hello, Andre wrote: Possibly this is Paragus quadrifasciatus female. But I stay in doubt for some reasons. In Van Veen's key, it keys out rather directly to P. quadrifasciatus. What are your reasons to doubt? Because of the variability, because it's a female, because I don't see the tip of the abdomen, because there are more species with reduced facial stripe, because I don't know if Sardinia might have endemic species... But, it's a very common species |
|
|
|
| pierred |
Posted on 12-11-2008 07:36
|
|
Member Location: Paris (France) Posts: 1451 Joined: 21.04.05 |
André, Thanks for taking the time to write it down. Pierre Duhem |
|
|
|
| Jump to Forum: |