Wasp beetle  (Clytus arietis)

Information supplied by English Nature:

http://www.englishnature.org.uk/

Deciduous: a plant that sheds its leaves at the end of the growing season.
Larvae: stage in an animal’s lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.