Found on the Walls around York, any clues?

Found on the Walls around York, any clues?

Observation - Found on the Walls around York, any clues? - UK and Ireland. Description: same size as a ladybird only has a bee like bit sticking out the back bit...some sort of larvea?

same size as a ladybird only has a bee like bit sticking out the back bit...some sort of larvea?