gloved hand pointing tunnels of wood-destroying larvae of dead oak tree

arcuatus autumn bark beech beetle branches calamity cerambycidae climate clytus crouch dark defense developmental doctor dying explanation fall foliage forest gloves gray idyllic ill illness insecticidal invasion light longhorn mark mist naked natural nature oak oat park path pest plagionotus plants problem rural scenic season specialist stage through tree trunk wild without wood woodland wrist yellowbowed