Large Flax Flea Beetle Aphthona euphorbiae
"Large" in this species' vernacular name seems to me to be a bit of a misnomer for something that reaches a maximum length of 2.4mm, though to be fair that is bigger than some of its congeners.
male Large Flax Flea Beetle Aphthona euphorbiae showing its aedeagus, North Elmham (Norfolk, UK), 1st November 2020
female Large Flax Flea Beetle Aphthona euphorbiae showing its claws, elytral puncturing and spermatheca, Elmham Park (Norfolk, UK), 7th January 2022
female Large Flax Flea Beetle Aphthona euphorbiae showing its claws, elytral puncturing and spermatheca, St Mary's churchyard, North Elmham (Norfolk, UK), 1st November 2021
female Large Flax Flea Beetle Aphthona euphorbiae, Wendling Beck Environment Project (Norfolk, UK), 11th April 2022
female Large Flax Flea Beetle Aphthona euphorbiae showing frons, elytral humeri, pronotum, elytral puncturing and spermatheca, Bintree Wood (Norfolk, UK), 31st March 2021
male Large Flax Flea Beetle Aphthona euphorbiae showing frons, elytral humeri and pronotum, Wendling Beck Environment Project (Norfolk, UK), 6th February 2025
2x male Large Flax Flea Beetles Aphthona euphorbiae showing frons of one and aedeagi of both (2 photos), St Mary's churchyard, North Elmham (Norfolk, UK), 28th February 2022
male Large Flax Flea Beetle Aphthona euphorbiae showing frons, elytral humeri, pronotum and hind tarsal claw, North Elmham (Norfolk, UK), 6th August 2024