Thread subject: Diptera.info :: Eristalinus aeneus
Posted by zcuc on 21-02-2009 20:27
#1
Hi,
Found in a desert area need artificial lake. Eristalinus?
Edited by zcuc on 25-02-2009 15:40
Posted by jorgemotalmeida on 21-02-2009 21:56
#2
Syrphidae. Somewhere Eristalinus sepulchralis
Edited by jorgemotalmeida on 21-02-2009 21:57
Posted by zcuc on 22-02-2009 23:55
#3
Thanks Jorge,
Did you excluded E.aeneus ?
Posted by amalia_raluca on 24-02-2009 17:22
#4
this is E. aeneus....male, eyes meet in front
Amalia
Posted by zcuc on 25-02-2009 10:32
#5
Thanks Amalia,
Can you explain the separating keys between E. aeneus and E.sepulchralis?
Posted by amalia_raluca on 25-02-2009 12:14
#6
for the males it is easy: like i have already told you on E. anaeus' males the yes meet on frons and E. sepulchralis' eyes don't. also a criteria used also to identify males and females is the presence of the hairs on the eyes: on aeneus the eyes are hairy on the upper surface only and bare on the lower, and on sepulchralis the eyes are all hairy.
in the field, anaeus has a more elongate body.
Amalia
Posted by zcuc on 25-02-2009 15:18
#7
Amalia, thanks very much for the nice explanation :)