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Diptera.info :: Family forums :: Asilidae Forum
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Asilidae - Dioctria genus?
Justafly
#1 Print Post
Posted on 27-11-2018 11:45
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Creto, Genova, 1014-07-19

... and the species?

Thank you for any your comment.Wink
Justafly attached the following image:


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Piluca_Alvarez
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Posted on 27-11-2018 18:47
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Reminds me a lot of Dioctria bicincta... but cannot see all features well (I miss a proper view of the antennae) so I might be wrong. Better wait for Reinoud. In any case, this is a species I am not familiar with.
 
Justafly
#3 Print Post
Posted on 28-11-2018 10:36
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Here you are another photo. May be it could be more useful.

Thank you in any case.SmileSmileSmile
Justafly attached the following image:


[91.08Kb]
 
Piluca_Alvarez
#4 Print Post
Posted on 29-11-2018 23:18
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Thanks for the new picture! Smile

Pity that I don't see the length of the second antennal segment clearly enough... But still, if I forget about this feature, still the rest fits Dioctria bicincta nicely Smile I have just checked and it is present in Italy so, that is a good sign Wink
 
Quaedfliegh
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Posted on 29-11-2018 23:52
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You could well be right Piluca, but the hind meta tarsi seem a bit narrow for the species which would point at D. gracilis. A tough one to ID
Greetings,

Reinoud

Field guide to the robber flies of the Netherlands and Belgium: https://www.jeugdbondsuitgeverij.nl/product/field-guide-to-the-robberflies-of-the-netherlands-and-belgium/

https://www.nev.nl/diptera/
 
Mariastraat 12
Piluca_Alvarez
#6 Print Post
Posted on 30-11-2018 12:28
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Thanks, Reinoud! Smile Good thing you are always around! Wink

Dioctria keeps confusing me Angry

Sorry for the mistake, Justafly Frown But I thought females of bicincta and gracilis are very difficult to separate and D. gracilis appears in Fauna Europaea as doubtly present in all countries were it was previously cited. And bicincta is present in Italy so I assumed it had to be that one. Too much assuming on my part, sorry.
 
Justafly
#7 Print Post
Posted on 30-11-2018 13:35
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Moreover we should consider that Dioctria gracilis in Italy appears present (with a question mark) only in Sardinia!

Cfr. http://www.faunaitalia.it/checklist/invertebrates/families/Asilidae.html

Ciao to everybody
 
Quaedfliegh
#8 Print Post
Posted on 30-11-2018 21:51
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According to Engel the two species are very difficult to separate and also FGG says that the females can not be separated in his online key. This is a female...... :-) As D. gracilis is only known from Sardinia, this may well be D. bincincta, Piluca is right! Although D. gracilis is also known from France.... The doubtful presence seems to mean that someone doubts D. gracilis as a valid species. Otherwise the species wouldn't occur anywhere and would be non existant.
Greetings,

Reinoud

Field guide to the robber flies of the Netherlands and Belgium: https://www.jeugdbondsuitgeverij.nl/product/field-guide-to-the-robberflies-of-the-netherlands-and-belgium/

https://www.nev.nl/diptera/
 
Mariastraat 12
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