Hello, apologies if this is the wrong place to report this insect, but an extremely large Elm Sawfly pupae was brought back to a Wilko store in my town. It was found in a bag of meadow grass for small animals, and the customer was concerned it might be dangerous. Unfortunately the member of staff who received it, took the pupae home and hatched it out. She then released it in her garden, and I’m concerned that it will become a problem if it can breed without another sawfly. I’m the neighbour of this Wilko staff worker, and was approached by her to help identify the insect. I would very much appreciate some advice, many thanks.