Thread subject: Diptera.info :: Orthocladiinae (or Chironomini)?
Posted by Lennart Bendixen on 14-03-2017 20:45
#1
Looks like basitarsus 1 was a little bit shorter than tibia 1. So this would turn out to be Orthocladiinae...correct?
If not, this would be Chironomini...there are said to be some genera with shortened basitarsus.
Who can help?
Length about 2 mm.
2016-05-12, northern Germany, Mohrkirch, garden
Posted by Lennart Bendixen on 16-03-2017 05:49
#2
I add the pictures of another specimen - I've found several of them in May (and a few in Aug / Sep) at the same site.
To me it's the same riddle with every specimen, they all seem to have the first tarsomere about as long as tibia 1.
Who can clear this up?
About 1,7 mm.
2016-05-13, same place.
Posted by Lennart Bendixen on 23-03-2017 07:48
#3
Another specimen,
2016-05-05, same place
Maybe one day someone will get it ;)
Posted by John Carr on 23-03-2017 11:50
#4
I will vote for Orthocladiinae based on the small eyes and fore tibial spurs. There is also
Pseudochironomus (Chironominae, Pseudochironomini) matching this description, but your only species is a different color.
Posted by Lennart Bendixen on 23-03-2017 21:07
#5
Ok, thanks a lot! If there's any part of the body you need better photos of, please let me know. I'm sure there will be some of them this year as well.
Posted by John Carr on 23-03-2017 21:20
#6
Male genitalia are much different between subfamilies. Chironominae have gonostylus fused to gonocoxite and parallel with body axis. Other subfamilies have gonostylus flexible and normally folded inward.
Edited by John Carr on 23-03-2017 21:20
Posted by Lennart Bendixen on 23-03-2017 21:35
#7
If there are any males....maybe they look completely different to the females, because I didn't recognise any orange male, or one being that difficult to put in a subfamily.
Posted by John Carr on 23-03-2017 22:39
#8
Yellow female Orthocladiinae often pair with black males.
Edited by John Carr on 23-03-2017 22:39