1. A disease of alders caused by the woolly alder aphid (a plant louse)

Derived forms: alder blights

Type of: blight

• suborder Pachycephalosaurus
• suborder Passeres
• suborder Percoidea
• suborder Petromyzoniformes
• suborder Pinnipedia
• suborder Plesiosauria
• suborder Prosauropoda
• suborder Prosimii
• suborder Reptantia
• suborder Ruminantia
• suborder Sauria
• suborder Sauropoda
• suborder Sauropodomorpha
• suborder Sciuromorpha
• suborder Scombroidea
• suborder Scorpaenoidea
• suborder Serpentes
• suborder Strepsirhini
• suborder Tarsioidea
• suborder Theropoda
• suborder Thyreophora
• suborder Tyranni
• suborder Xenarthra
• suborder Zygoptera
• subordinary