Cladius pectinicornis
The tiny projection on the 3rd antennal segment helped to identify this sawfly, in combination with the distinctive form of the saw.
, North Elmham, 22-Aug-20 (A) (1).jpg)
, North Elmham, 22-Aug-20 (A) (2).jpg)
, North Elmham, 22-Aug-20 (A) (4).jpg)
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, North Elmham, 22-Aug-20 (A) (6).jpg)
, North Elmham, 22-Aug-20 (A) (5).jpg)
female Cladius pectinicornis showing sawsheath and cerci from below, saw, basal antennal segments and forewing, North Elmham (Norfolk, UK), 22nd August 2020