Cicada Nymph

I saw this empty case of a cicada nymph when I went to check the letter box this afternoon.  I'm sure it hasn't been there very long but it seems odd to emerge as an adult when summer is disappearing. 
Only two more days of work and the Easter holidays start.  I'm starting to loose the will to live as Billy Connolly says.  I mustn't grumble though because people always think teachers have too many holidays.