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The Society for the study of flies (Diptera)

Affiliated to the British Entomological and Natural History Society (BENHS)

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#1 2017-08-07 19:55:32

anymarks
DF Members
Name: Neil Marks
From: Norfolk
Registered: 2009-08-07
Posts: 93

Tephritid ID

Not my area so the nearest I Google is Chaetostomella cylindrica. I would welcome any correction/confirmation as it seems well out of it's usual range here in East Norfolk.

Taken on the same Creeping thistle as the gall - I don't know if the two are connected


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#2 2017-08-07 20:48:36

Tony Irwin
DF Members
Name: Tony Irwin
From: Norwich
Registered: 2008-03-01
Posts: 625

Re: Tephritid ID

The gall looks like Urophora cardui. The fly appears to be Terellia tussilaginis (its larvae feed in the flower heads of burdock).  Both are Tephritidae.
Chaetostomella cylindrica is known from East Norfolk, having been recorded by Verrall in 1881. It is distinguished by the black mark on the end of the scutellum. Similar species have small black side patches, but the tip is pale.

Last edited by Tony Irwin (2017-08-07 20:59:32)

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#3 2017-08-07 21:04:40

anymarks
DF Members
Name: Neil Marks
From: Norfolk
Registered: 2009-08-07
Posts: 93

Re: Tephritid ID

Many thanks Tony. Plenty of Burdock around the site.

Regards
Neil

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