Holocentropus dubius
The majorioty of Holocentropus I catch are picicornis and judging by the NBN Atlas dubius has not previously been recorded in the Wensum Valley or its tributories. This one came to light and its forewing was 8.6mm long.
female Holocentropus dubiusshowing wings and abdomen tip (2 views from below, one from above and one from side), Wendling Beck Environment Project (Norfolk, UK), 14th July 2024
My next followed just two nights later and a nearby location.
female Holocentropus dubiusshowing wings (with close-up of hindwing showing closed discal cell) and abdomen tip (from below and side), Wendling Beck Environment Project (Norfolk, UK), 16th July 2024