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Diptera.info :: Identification queries :: Diptera (adults)
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Chironomid? (2_1_b)
gdoer
#1 Print Post
Posted on 25-10-2019 21:43
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I am hesitant to call these chironomid because their wings lack any crossveins. Is this a valid concern, or do not all chironomid adults have crossveins?

size: around 2mm

location: Sierra Nevada stream

id #: 2_1_b
gdoer attached the following image:


[168.75Kb]
Edited by gdoer on 25-10-2019 21:43
 
John Carr
#2 Print Post
Posted on 25-10-2019 23:35
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Chironomidae, likely tribe Tanytarsini. The crossveins will be there if you look closely enough, but unpigmented.
 
http://www.flickr.com/photos/31715949@N00
gdoer
#3 Print Post
Posted on 25-10-2019 23:41
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Makes sense. Tibia is longer than 1st tarsomer and squama is without hairs. Thanks!
 
Tony Irwin
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Posted on 26-10-2019 09:43
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Note that in Tanytarsini, the front tibia should be shorter than the first tarsomere. Most of these individuals seem to be missing the front tarsi
Tony
----------
Tony Irwin
 
John Carr
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Posted on 26-10-2019 12:05
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The front tarsi tend to break off in Chironominae much more than in other subfamilies.
Edited by John Carr on 26-10-2019 12:05
 
http://www.flickr.com/photos/31715949@N00
gdoer
#6 Print Post
Posted on 27-10-2019 20:49
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Ah yes. Sorry, that is what I meant! Thank you Smile
 
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