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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Nematocera" (Non-Brachycera) » Mosquitoes and Midges (Culicomorpha) » Non-biting Midges (Chironomidae) » Eggs, Larvae, and Exuviae
Photo#746169
chironomid pupa
Copyright © 2013 ophis

chironomid pupa
Milton, Norfolk County, Massachusetts, USA
February 16, 2013
Size: 6 mm
Collected with submersed roots and stems of Phalaris arundinacea from stone-lined bed of Pine Tree Brook immediately below outlet of Pope's Pond.
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Contributed by ophis on 20 February, 2013 - 7:31am

Save the skin
Experts can identify Chironomidae from the shed pupal skin. Occasionally a species is only distinctive in some life stages.
… John F. Carr, 20 February, 2013 - 7:52am login or register to post comments

 
re: Save the skin
are those the so-called thoracic horns projecting over the head?
… ophis, 20 February, 2013 - 7:56am login or register to post comments

 
Horns
The appendages projecting forward are thoracic horns, respiratory appendages, and maybe some other names.
… John F. Carr, 20 February, 2013 - 7:57am login or register to post comments

 
re: Horns
They are plumose in a lot of web images. I wonder if they are not here because riffle habitat has plenty of 02.
… ophis, 20 February, 2013 - 8:04am login or register to post comments

 
Probably
Branched respiratory organs are found in genera near Chironomus, which prefer slow moving water, often oxygen-poor.
… John F. Carr, 20 February, 2013 - 8:16am login or register to post comments

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