Harlequin Ladybird (Harmonia axyridis) (pond 3)

Observation - Harlequin Ladybird (Harmonia axyridis) (pond 3) - UK and Ireland. Description: Found in a pond sample. I believe from it general appearance to be an uncased caddisfly larvae, but

Found in a pond sample. I believe from it general appearance to be an uncased caddisfly larvae, but have not been successful in identifying to a family level.