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Photo#20333
Midge - Chironomus atroviridis

Midge - Chironomus atroviridis
Harvard, Worcester County, Massachusetts, USA
June 11, 2005
Size: 5mm
Looks like a fungus gnat.

John,
Do all the moves look right?

 
Looks good
Could you add new genus Dicrotendipes Kieffer 1913 for this one:


I IDed it as Chironomus (Limnochironomus) based on Townes; the species within have been moved to a different genus since his review. John Epler reviewed Dicrotendipes in 1987.

Chironomus moves
Townes defined subgenus Chaetolabis containing Chironomus atroviridis and C. ochreatus (new species). The difference is slight: C. atroviridis is a bit larger, has most of the fore basitarsus brown instead of black, and usually has the side stripes on the thorax dark brown. C. ochreatus has the fore basitarsus entirely black and never has dark side stripes.

Authors since then have suppressed subgenus Chaetolabis, promoted it to a full genus, or synonymized the two species within.

If we follow Townes and nearctica (separate species):

C. atroviridis:
This one

C. ochreatus:


If you prefer to synonomize them the first name has priority.

Also, these are Chironomus decorus, except that "decorus" has been reinterpreted as a species group separable only by chromosome banding.

So they can go in species C. decorus, no taxon "C. decorus group", or subgenus Chironomus.

If you make the subgenus page, this one goes there too:
.
I think it is another decorus but I'm less sure.

Moved
I'll move it to genus for now, and wait for species confirmation. Thanks John!

Probably Chironomus ochreatus
I think this is Chironomus ochreatus (Townes). I need to do some more checking to make sure there isn't another midge that looks like this.

Moved
Moved from Midges.

Probably Chironominae
Front legs are long. Wing veins aren't clear, but what's visible does not exclude Chironominae.

Midge
This one is a midge in the family Chironomidae - Chen

 
Midge
Thanks Chen, for letting me know of the correct ID.

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