Welsh Chafer 
Welsh Oak Longhorn Beetle 
Western Blood-Red Ladybird 
Western corn rootworm 
Western Fairy Lady Beetle 
Western Hercules Beetle 
Western Masked Chafer 
Western Tiger Beetle 
Wheat weevil 
White Acacia Leaf Beetle 
White Spotted Jewel Beetle 
White-spotted Pintail Beetle 
White-spotted Sawyer 
Willow calligrapha 
Willow Flea Beetle 
Willow Leaf Beetle 
Willow Leaf Beetle 
Winter Firefly 
Wood tiger beetle 
Woodland Dor Beetle 
Wrinkled Soldier Beetle 
Xanthopenthes bifasciatus 
Xenocerus saperdoides 
Xestoleptura crassipes