Western honey bee 
Western Paper Wasp 
Western yellowjacket 
White Butterfly Parasite 
White Flank Black Braconid wasp 
White Oak Club Gall Wasp 
White-cheeked Carpenter 
White-cheeked Carpenter Bee 
White-footed Ant 
White-horned Horntail 
White-lipped Blood Bee 
White-spotted Ichneumonid Wasp 
White-tailed Bumble Bee 
Wide-striped Sweat Bee 
Widow Yellowjacket 
Wild Carrot Wasp 
Wilke's Mining Bee 
Willow Leaf-rolling Sawfly 
Willow Mason Wasp 
Willow Oak Sawfly 
Willow Sawfly 
Willughby's Leafcutter Bee 
Wool Sower Gall 
Woolly Alder Sawfly