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#1 2018-11-13 20:56:03

JudyS
DF Members
From: Peterborough
Registered: 2018-11-13
Posts: 11

ID request please

Hello - new here, so I have much to learn.  I found this fly today warming up on Euonymus, and after much searching I'm wondering if it might be Lonchaeidae.  Could someone confirm or correct, please?  It was under a centimetre long, probably around 6-7mm.



(I'm using the watermark as much for my own records as anything.  Sorry if it's intrusive)


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#2 2018-11-13 21:44:57

conopid
DF Members
Name: Nigel Jones
From: Shrewsbury
Registered: 2008-02-27
Posts: 692
Website

Re: ID request please

Yes, certainly looks like Lonchaeidae. Probably Lonchaea species.


Nigel Jones
Shropshire

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#3 2018-11-13 23:16:29

JudyS
DF Members
From: Peterborough
Registered: 2018-11-13
Posts: 11

Re: ID request please

Many thanks, Nigel - I'm quite pleased with myself now! 

A female?  I presume it's a microscope job to go any further.

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#4 2018-11-14 13:04:41

conopid
DF Members
Name: Nigel Jones
From: Shrewsbury
Registered: 2008-02-27
Posts: 692
Website

Re: ID request please

Yes a female. You will definitely need the specimen to ID this. If it's not Lonchaea it might be Silba fumosa a common species in autumn (but not usually this late in the year).


Nigel Jones
Shropshire

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#5 2018-11-14 15:01:50

JudyS
DF Members
From: Peterborough
Registered: 2018-11-13
Posts: 11

Re: ID request please

Thanks again ... as to being late in the season, I saw a dragonfly yesterday.  Can't say I've ever before seen one in November!

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#6 2018-11-14 16:19:06

JudyS
DF Members
From: Peterborough
Registered: 2018-11-13
Posts: 11

Re: ID request please

Nigel - I've looked at all my other photos of this fly and don't see any longer hairs in the fringe of the calypterae, so am I safe to assume this is not Silba fumosa - along with the fact that it's rather late in the year for it?

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#7 2018-11-14 22:00:04

conopid
DF Members
Name: Nigel Jones
From: Shrewsbury
Registered: 2008-02-27
Posts: 692
Website

Re: ID request please

I wouldn't like to say for certain. The clincher would be two bristles in the top posterior part of the katepisternum. Only Silba has that. Trouble is it's usually really difficult to see these in photos. I shoul dhave said that I ahven't seen any Lonchaeid species in November, but in fact, Silba is often one of the later species with spring and late summer-early autumn broods.


Nigel Jones
Shropshire

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#8 2018-11-15 02:49:59

JudyS
DF Members
From: Peterborough
Registered: 2018-11-13
Posts: 11

Re: ID request please

Well, I don't really know what I'm looking for, of course, I'm just trying to read and learn.  This is probably the best photo I have of the bristles in that area and I certainly can't tell where they're all coming from! 

Ah well.  Lonchaeidae sp.  will have to do!  Thanks for your patience.  smile

Last edited by JudyS (2018-11-15 02:50:46)

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#9 2018-11-15 02:51:08

JudyS
DF Members
From: Peterborough
Registered: 2018-11-13
Posts: 11

Re: ID request please

Can't get the image to show, for some reason.

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#10 2018-11-15 02:57:19

JudyS
DF Members
From: Peterborough
Registered: 2018-11-13
Posts: 11

Re: ID request please

Trying one more time


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#11 2018-11-15 11:56:22

Howard Bentley
Committee
Name: Howard Bentley
Registered: 2008-07-07
Posts: 776

Re: ID request please

Don't be discouraged, Judy. The Lonchaeidae are a difficult family, being mainly very dark-coloured and with black bristles. If I had to choose a group of flies which are almost impossible to do from photographs, it could well be this family. I have to confess that even when I have them under my microscope they often defeat me!

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#12 2018-11-15 16:19:02

JudyS
DF Members
From: Peterborough
Registered: 2018-11-13
Posts: 11

Re: ID request please

Seems to me that most fly families are difficult but some are more difficult than others, Howard!  Why I chose to interest myself in flies I can't tell you, but they fascinate me.  Ah well, onward and upward!  smile

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#13 2018-11-16 13:07:24

Howard Bentley
Committee
Name: Howard Bentley
Registered: 2008-07-07
Posts: 776

Re: ID request please

Spot on, Judy! They are indeed both fascinating and difficult to varying degrees. That's what keeps us all hooked.

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