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The Society for the study of flies (Diptera)

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#1 2017-11-29 19:30:21

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

Is this mosquito Aedes dorsalis (again)?

It was almost exactly one year ago (in fact two weeks earlier) that Tony Irwin confirmed the presence of Ades dorsalis at this exact location. It looks to me that this is another male.

Is it possible to confirm without a specimen? (about 10 mm long, so about the same size as last time too).

Nigel G.


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#2 2017-11-30 00:40:21

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

Re: Is this mosquito Aedes dorsalis (again)?

Nigel - as I intimated in the last post, separating caspius and dorsalis can be tricky, particularly with worn specimens. This individual is much more intact, and I would call it caspius. I know that you sent me a specimen of dorsalis, from the same site, so it seems that both are breeding locally. This is not too surprising as they both tolerate saline conditions, and overwinter as eggs. What's good for one will do for the other. The interesting thing will be to find out what differences there may be in their biology. Rearing the adults from larvae is straightforward, if you can find some of the breeding sites.

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#3 2017-11-30 10:52:56

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

Re: Is this mosquito Aedes dorsalis (again)?

Thanks very much for the correction, Tony.
I'm afraid I will duck that suggestion of attempting to find the actual breeding sites. Just one reason would be that I know the best local location to look, and that requires a pair waders, at least.

Nigel G.

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