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#1 2017-12-26 23:04:23

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 1012

Chironomus plumosus male, or just one of several possibles?

I don't know how to tell if this ID is correct or not. I haven't seen any guidance anywhere.
It is certainly a large Chironomid. Seen 31st March.

I've uploaded a top view, and 3 slightly different side views just in case one shows details that are useful.

Nigel G.


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#2 2017-12-27 00:08:04

Tony Irwin
DF Members
Name: Tony Irwin
From: Norwich
Registered: 2008-03-01
Posts: 759

Re: Chironomus plumosus male, or just one of several possibles?

With few exceptions, it's unwise to identify chironomids from photos - the details (primarily of the male genitalia) are simply not visible. Having said that, this specimen appears to be a Chironomus and may be plumosus, but personally I couldn't exclude other species.

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#3 2017-12-27 00:12:29

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 1012

Re: Chironomus plumosus male, or just one of several possibles?

Thanks Tony.
It's as I suspected - that's why there isn't any guidance!

Regards
Nigel

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#4 2017-12-27 00:49:25

oxycera
DF Members
Name: John Coldwell
From: Barnsley
Registered: 2008-04-27
Posts: 322

Re: Chironomus plumosus male, or just one of several possibles?

The FBA Handbooks to adult chironomids are superb and it is possible to identify many species with a fair amount of confidence.
Its all genitalia work down to species level of course. Personally I find the genus Chironomus, despite the generally large size and distinctive genitalia, one of the more awkward genera to deal with.

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#5 2017-12-27 11:35:44

Laurence Clemons
DF Members
Name: Laurence Clemons
Registered: 2008-04-02
Posts: 371

Re: Chironomus plumosus male, or just one of several possibles?

Chironomus plumosus is a large, pale species.

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#6 2017-12-27 12:44:38

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 1012

Re: Chironomus plumosus male, or just one of several possibles?

Thanks Laurence. Clearly not the suggested species then! I have to admit that I simply do not like (=loathe) microscope work. And at my time of life, what's the point in doing something you don't like? (excepting those things that simply have to be done, obviously!)

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