Simon Colmer / Mildew on Indian bean tree (Catalpa bignonioides) Mildew is caused by either Erysiphe catalpae or Erysiphe elevata (syn. Microsphaera elevata) Both mildews were previously known in the USA, but have...

Stephen Dalton / Mildew on Oak leaves (Quercus sp) UK

Stephen Dalton / Sac spider (Clubiona sp) on leaf, UK. Notice early stages of mildew on the leaf. Clubionidae