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#1 2017-07-28 11:58:44

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 904

Small cranefly with green+lilac tones to wings - a Limoniinae?

This male has a body about 6 - 8 mm long, and an unlikely tint to the wings - not due to blue sky - it was cloudy.

The venation is a bit confusing, with some possible creases rather than veins, and the coloration I find confusing. It does look like a Limoniinae on the basis of the venation, but I am wary of taking it further on a speculative basis when I'm not sure whether one or two key veins are present or not.

It is certainly a stunning looker!

Nigel G.


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#2 2017-07-29 16:47:51

Geoff F
DF Members
Name: Geoff Foale
From: South Devon
Registered: 2014-05-12
Posts: 168

Re: Small cranefly with green+lilac tones to wings - a Limoniinae?

I would suggest the wing colour is due to the angle of light. I had a similar problem recently where I struggled to make out the veins and using flash completely rebounded.

As far as I can tell with the wing veins here, I appear to come out at Dicranophragma adjunctum. The stigma is rather faint though, but there is a dark seam across the wing.

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#3 2017-07-29 17:17:15

Geoff F
DF Members
Name: Geoff Foale
From: South Devon
Registered: 2014-05-12
Posts: 168

Re: Small cranefly with green+lilac tones to wings - a Limoniinae?

Originally I thought about Dicranophragma adjunctum. The stigma is rather faint though, but there is a dark seam across the wing.

However looking more closely at the wing veins I now appear to end up at Limonia but don't seem to get any further.

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#4 2017-07-29 17:33:44

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 904

Re: Small cranefly with green+lilac tones to wings - a Limoniinae?

Thanks for having a bash at this one, Geoff.

I can't give a definitive on the angle of the shots because I was constrained by the surrounding vegetation, so I was only able to make small adustments in positioning.  No flash was used.

I could hope for it to appear again, and I might do better. It would be useful to know if the wing coloration was genuine. As to the venation, I could not find any good matches to a specific species.

Nigel G.

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#5 2017-07-29 17:36:40

Geoff F
DF Members
Name: Geoff Foale
From: South Devon
Registered: 2014-05-12
Posts: 168

Re: Small cranefly with green+lilac tones to wings - a Limoniinae?

Or, am I getting confused by a dark shadow which I am mistaking for the end of vein R1 ? In which case, if R1 ends with an abrupt right angle bend near R, but it isn't obvious from the images, this could lead on to Dicranomyia sp which would be a better overall fit.

Not sure about going any further down that tricky road though.

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#6 2017-07-29 17:54:44

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 904

Re: Small cranefly with green+lilac tones to wings - a Limoniinae?

I've had a few Dicranomyia species before, all with mottled wings, and never identified to species level.

The venation does match well (as an example) to D. modesta female on the Dipterists Info web site. No image of a male though. But the head appearance looks encouraging too.

I think this is probably the right sort of area. It might be possible to get to species name if the claspers are distinctive too.
That doesn't look likely, given the lack of images around for this particular genus.

So near and yet to far, maybe!

Last edited by Gateside (2017-07-29 17:54:59)

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#7 2017-08-24 21:17:22

johnkramer
DF Members
Name: John Kramer
From: Oadby, Leicester
Registered: 2008-02-20
Posts: 230

Re: Small cranefly with green+lilac tones to wings - a Limoniinae?

I've just stumbled on this post.  Yes, I agree Nigel, from the venation it is a Dicranomyia, with limoniine venation, and I'm nearly certain it is D. modesta.  This has very distinctive black bristles on the inner surface of the inflated style.  You can see the darkening on your photo. 
John K.

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#8 2017-08-25 08:56:53

Gateside
DF Members
Name: Nigel Gilligan
From: Cumbria
Registered: 2011-08-26
Posts: 904

Re: Small cranefly with green+lilac tones to wings - a Limoniinae?

Thanks very much, John.

By the way, did you see my other relatively recent cranefly post, which hasn't got any replies at all. I wondered if you'd missed that one too, or is it hopeless without the specimen. It's got a title of:

Cylindrotomidae - Diogma species cranefly?

Thanks.
Nigel G.

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