Birch Sawfly from the UK

Subject: Black and yellow
Location: East Sussex, UK
May 1, 2016 3:35 pm
Spotted in my garden on April 30th…unfortunately dead.
The lighter patch on the body is in fact bright yellow but the photo is not that well lit.
Signature: Sue W

Birch Sawfly
Birch Sawfly

Dear Sue,
Your Sawfly reminds us so much of the North American Elm Sawfly that we searched for members of the genus in the UK.  We quickly found the Birch Sawfly,
Cimbex femoratus, on NatureSpot where it is described as “Up to 25mm long, the largest British Sawfly. The adult is easily recognised by the pale band on its shiny black abdomen. Wings are smoky brown colour with dark brown margins. The antennae are yellow tipped.”  The site also states:  “Local throughout Britain, not very common” and “Uncommon in Leicestershire and Rutland.”  There is a very nice image on Wild About Britain.  Sawflies are solitary, non-stinging relatives of Ants, Bees and Wasps.

Thank you very much Daniel.
Greatly appreciate your swift response.
All the best

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