1. Small black sawfly native to Europe but established in eastern United States; larvae mine the leaves of birches causing serious defoliation
   - Fenusa pusilla

Type of: sawfly

• welsh
• Welsh Black
• Welsh corgi
• Welsh dresser
• Welsh onion
• Welsh pony
• Welsh poppy
• Welsh rabbit
• Welsh rarebit
• Welsh springer spaniel
• Welsh terrier
• welsher
• Welshman
• Welshwoman
• welt
• Weltanschauung
• welted thistle
• welter
• welterweight
• tuille
• tuition
• tuition fee
• tularaemia
• tularemia
• tule