Thread subject: Diptera.info :: Syrphidae: Chrysotoxum intermedium ?

Posted by KathrinJ on 27-01-2019 21:24
#1
Hello,

after a discussion about Chrysotoxum in another forum, I wanted to check, if these two specimens might be Chrysotoxum intermedium?

specimen 1

Date: 21.09.2017
Location: Germany, Baden-Württemberg, Black Forest, Wolfach - Halbmeil, Hohberg NNW camping area, in a sparsely grown mixed forest
Edited by KathrinJ on 27-01-2019 21:25

Posted by KathrinJ on 27-01-2019 21:26
#2
specimen 1 - closeup of antennae

Posted by KathrinJ on 27-01-2019 21:26
#3
specimen 2

Date: 15.09.2017
Location: Germany, Baden-Württemberg, Black Forest, Murg valley, Schönmünzach, in a mainly coniferous forest

Posted by KathrinJ on 27-01-2019 21:27
#4
specimen 2

Posted by KathrinJ on 27-01-2019 21:27
#5
specimen 2 - closeup of antennae

Posted by Sundew on 28-01-2019 01:12
#6
With the 3rd antenna segment longer than 1+2 together and a very short-haired abdomen it should be C. intermedium according to the key http://web.archiv...x_key.html. Speight (2017, http://pollinator...counts.pdf) points out that "C. intermedium" is rather a species complex, and the individuals of central Europe might be C. lessonae. To find out in detail is a job for the experts and requires molecular studies...
Regards, Sundew
Edited by Sundew on 28-01-2019 01:15

Posted by KathrinJ on 28-01-2019 10:25
#7
Thank you, Sundew, for your very informative answer and the additional information about the species complex Smile.

With kind regards,
Kathrin